[go: up one dir, main page]

EP0408801B1 - Dispositif de séchage par pulvérisation - Google Patents

Dispositif de séchage par pulvérisation Download PDF

Info

Publication number
EP0408801B1
EP0408801B1 EP19890113481 EP89113481A EP0408801B1 EP 0408801 B1 EP0408801 B1 EP 0408801B1 EP 19890113481 EP19890113481 EP 19890113481 EP 89113481 A EP89113481 A EP 89113481A EP 0408801 B1 EP0408801 B1 EP 0408801B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
air
water
pressure
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19890113481
Other languages
German (de)
English (en)
Other versions
EP0408801A1 (fr
Inventor
Toshiyuki Tanaka
Akira Kodera
Shizuo Aishima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ohkawara Kokohki Co Ltd
Original Assignee
Ohkawara Kokohki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11987480&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0408801(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ohkawara Kokohki Co Ltd filed Critical Ohkawara Kokohki Co Ltd
Priority to DE1989624848 priority Critical patent/DE68924848T2/de
Publication of EP0408801A1 publication Critical patent/EP0408801A1/fr
Application granted granted Critical
Publication of EP0408801B1 publication Critical patent/EP0408801B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge

Definitions

  • the present invention relates to a spray nozzle unit which can function satisfactory even when low pressure is applied during a period of start-up, and a spray drying apparatus equipped with the nozzle unit.
  • the rate of water to be sprayed must be equivalent to the water content of the feed liquid, which is usually in the range of 30 - 80 % by weight. Thus, the rate of water to be sprayed is also 30 - 80 % by weight of that of the feed liquid. Because of pressure nozzle characteristics, the spray nozzle pressure decreases to 10 - 80 %, depending on the liquid viscosity when this low rate of water is fed. Water droplets thus produced are likely to be so coarse that they may adhere to the surface inside the drying chamber. Subsequent spraying of the feed liquid causes dried powder to adhere to the wet surface to form deposits.
  • Figs. 6 and 7 are used to cope with this situation.
  • a plurality of spray nozzles 10 are disposed at the top of the inside of the spray drying chamber.
  • the number of spray nozzles used is limited to avoid low pressure spraying.
  • Fig. 7 illustrates an example in which a water spray nozzle 11 is disposed separately from a feed liquid spray nozzle 12.
  • the device of Fig. 6 has disadvantages of uneven liquid droplet dispersion and ununiform temperature distribution because of a longer distance between the nozzles and the very existence of unused spray nozzles.
  • plugging problems are likely to occur around the nozzles left unused when water is injected.
  • the device of Fig. 7 has disadvantage of feed liquid clogging inside the feed liquid spray nozzle since no cooling or flushing cannot be conducted through the feed nozzle.
  • FR-A 938 920 shows an apparatus for spray drying a liquid, comprising a drying chamber which has in its upper portion a nozzle unit.
  • the nozzle unit of this prior art apparatus is constructed of two substantial component parts, the first of them being an inner feed liquid nozzle and the second being an outer air conducting unit. Both of the above described component parts are fed with either liquid from a liquid conduit 6 or air from a pressure air conduit 8. The air and feed liquid arrive at the upper portions of the respective outer or inner unit and are fed thereto tangentially so that the air and the liquid are swirled in counter-current flow in their respective nozzle parts. While the air stream is supplied to the outer nozzle component part under pressure, the liquid stream of this prior art nozzle is not pressurized.
  • the apparatus as described above has, however, certain disadvantages.
  • the main disadvantage is that by feeding the inner nozzle with a liquid which is not pressurized and leaves the nozzle at is outlet only because it is aspirated by the surrounding air flow, only small flow rates can be realized.
  • Another disadvantage of the above described nozzle unit is that resulting from its specific construction the outer air conducting component part covers only a portion of the inner liquid conducting nozzle part. As in most cases the liquid fed to the inner component part is hot said component part becomes heated by the liquid. Thus temperature regulation of the inner part is achieved by the air passing over the circumference of the inner nozzle.
  • the part of the inner nozzle that is not covered by the outer component part is, however, not regulated in temperature the way the inner nozzle is.
  • a final disadvantage of this prior art apparatus lies in the flow of the gas supplied for heating the drying chamber 1. As there is no gas outlet provided in the lower portion of said drying chamber, this heating gas flow is not capable of contacting uniformly the already dried media disposed in the lower portion of the chamber.
  • a gas is blown at high speed through the annulus formed between the pressure nozzle and the cylindrical outer tube so as to atomize water into very fine droplets even when only low pressure, which would otherwise produce coarse droplets, is applied in the pressure nozzle. Therefore, complete drying is carried out, and no water droplets adhere to the inside wall of the spray drying apparatus.
  • Fig. 1 illustrates a preferred embodiment of the nozzle unit of the present invention.
  • Fig. 2 shows a partially cross sectional view of the end portion of the nozzle unit illustrated in Fig. 1.
  • Figs. 3 (a), (b) and (c) depict an example of a slit used for the nozzle unit of the invention.
  • Figs. 3 (a), (b) and (c) are a top plan view, a bottom plan view, and a side view, respectively.
  • Fig. 5 is a schematic illustration of an embodiment of the spray drying apparatus equipped with the spray nozzle unit of the present invention.
  • Figs. 6 and 7 show conventional nozzle units.
  • Fig. 1 illustrates a preferred embodiment of the nozzle unit of the present invention.
  • Fig. 2 shows a partially cross-sectional view of the end portion of the nozzle unit illustrated in Fig. 1.
  • a feed liquid (or water) pump 1 a Roots blower 2
  • a jacket pipe 3 an air nozzle 4
  • a feed liquid (or water) pipe 5 a feed liquid (or water) pipe 5
  • a pressure nozzle 6 for discharging feed liquid (or water).
  • the jacket pipe 3 is disposed around the feed liquid (or water) pipe 5.
  • the end portions of the pressure nozzle 6 and the air nozzle 4 are of converging construction or so shaped that their diameters diminish as they near the tip of the nozzle as shown in Figs. 1 and 2.
  • a gas slit 7 is provided between the pressure nozzle 6 and the air nozzle 4 or on the outer area of the pressure nozzle 6 to give swirling motion to the discharging air stream as shown in Figs. 3 (a), (b) and (c) which are a top plan view, a bottom plan view, and a side view, respectively.
  • Equation I The spraying pressure of feed liquid or water required for the pressure nozzle 6 is appropriately determined using the following Equation I and Equation II.
  • the former is the general equation expressing flow characteristics of a pressure nozzle while the latter expresses droplet diameters for a specific pressure nozzle used, which is an SX nozzle manufactured by Spraying Co. for one preferred embodiment of this invention.
  • W K 1 ⁇ D 2 ⁇ P 0.6
  • W flow rate (kg/h)
  • K 1 coefficient
  • D orifice diameter (mm)
  • P pressure (kg/cm2).
  • D p K2 ⁇ W -0.44 ⁇ ⁇ 0.16 ⁇ D 1.52
  • W flow rate (kg/h)
  • D p liquid droplet diameter ( ⁇ m)
  • K2 coefficient
  • ⁇ liquid viscosity
  • the air nozzle 4 disposed around the pressure nozzle 6 has an air velocity of 80 m/s or higher, preferably 100 m/s or higher, and generally has an air pressure of 0.1 kg/cm2 or higher, preferably 0.2 kg/cm2 or higher, but both air velocities and air pressures are not limited to these values. Other values beyond the above ranges may be used depending on the construction of the nozzle used.
  • Fig. 5 is a schematic illustration of an embodiment of the spray drying apparatus equipped with the spray nozzle unit of the present invention, it will be described how the spray drying apparatus is operated.
  • a feed liquid pump 1 discharges water via a feed liquid pipe 5 to a pressure nozzle 6 for spraying. Spraying of water is carried out at significantly low pressure. However, since air is blown off at high speed around the pressure nozzle 6 and swirling motion is formed in the air stream, preferably with the use of a slit 7, water is atomized into fine droplets of the desired particle size even at low pressure.
  • every water droplet is dried with hot air as referred to as A which is blown off into a drying chamber 8 of the spray drying apparatus.
  • A hot air
  • the temperature in the drying chamber 8 is maintained to be constant.
  • a feed liquid to meet a specific objective is blown off into the drying chamber 8 of the spray drying apparatus via the pressure nozzle 6 of the above nozzle unit and is dried by a hot air blown off via an inlet 9 to obtain a powder product of specified grade.13 is an outlet for exhaust gas.
  • Atomization tests for a feed liquid and water were made under the conditions shown in Table 1.
  • An SX nozzle having a hexagonal cross-section manufactured by Spraying Co. was used for a pressure nozzle 6.
  • the circumference of the nozzle tip was covered with a cylindrical pipe having a circular cross-section to obtain an annular space used for an air nozzle 4.
  • the distance between the SX nozzle and the cylindrical pipe were about 5 mm at their widest site, and about 3 mm at their closest site.
  • the inner diameter of the cylindrical pipe was 7 mm at its tip.
  • Table 1 Conventional Nozzle Nozzle of This Invention Conventional Nozzle Feed Liquid Poly vinylchloride(PVC) Water Water Orifice Dia./Core(mm) 0.787/425 0.787/425 0.787/425 Spray Pressure(kg/cm2) 23 6 6 Feed Rate (kg/h) 50 30 30 Liquid Viscosity (cp) 110 Solids Content (%) 40 Air Pressure (kg/cm2) 0.26 Air Flow Rate (kg/h) 20.5 Air Blow Speed (m/s) 127.1 Inlet Temp. (°C) 102 102 102 Outlet Temp.
  • PVC Poly vinylchloride
  • Dia./Core(mm) 0.787/425 0.787/425 0.787/425 Spray Pressure(kg/cm2) 23 6 6 6 Feed Rate (kg/h) 50 30 30 Liquid Viscosity (cp) 110 Solids Content (%) 40 Air Pressure (kg/cm2) 0.26 Air Flow Rate (kg/h) 20.5 Air Blow Speed (m/s)
  • the pressure nozzle used was an SX nozzle manufactured by Spraying Co.
  • Example 2 The same nozzle as described in Example 1 was used, but nozzle diameters were changed to obtain particles of larger sizes. A large drying chamber was used in this example.
  • Table 2 Conventional Nozzle Nozzle of This Invention Conventional Nozzle Feed Liquid Poly vinylchloride(PVC) Water Water Orifice Dia./Core(mm) 1.067/425 1.067/425 1.067/425 Spray Pressure(kg/cm2) 7 2 2 Feed Rate (kg/h) 50 30 30 Liquid Viscosity (cp) 110 Solids Content (%) 40 Air Pressure (kg/cm2) 0.26 Air Flow Rate (kg/h) 20.5 Air Blow Speed (m/s) 127.1 Inlet Temp. (°C) 102 102 102 Outlet Temp.
  • PVC Poly vinylchloride
  • Dia./Core(mm) 1.067/425 1.067/425 1.067/425 Spray Pressure(kg/cm2) 7 2 2 2 Feed Rate (kg/h) 50 30 30 Liquid Viscosity (cp) 110 Solids Content (%) 40 Air Pressure (kg/cm2) 0.26 Air Flow Rate (kg/h) 20.5 Air Blow Speed (m/s)

Landscapes

  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Nozzles (AREA)

Claims (1)

  1. Dispositif de séchage par pulvérisation, comprenant:
    a) une chambre de séchage (8)
    b) une unité de buse disposée à l'extrémité supérieure de ladite chambre de séchage (8) et comprenant
    b1) une conduite d'alimentation de liquide (5)
    b2) une buse de pression (6) reliée à une extrémité de ladite conduite d'alimentation de liquide; et
    b3) un organe tubulaire (3) disposé autour de ladite conduite d'alimentation de liquide et de ladite buse de pression de manière à former un volume entre lui et elles et comprenant une buse à air (4) de construction convergente à l'extrémité de la conduite d'alimentation de liquide, qui pulvérise un courant de gaz à partir dudit volume;
    c) des moyens (7) pour induire un mouvement tourbillonnaire dans le courant de gaz; et
    d) une entrée d'air chaud (9) disposée à ladite extrémité supérieure de la chambre de séchage,
       caractérisé par:
    e) une pompe d'alimentation de liquide (1) reliée à ladite conduite d'alimentation de liquide (5) pour alimenter ladite buse de pression avec un liquide;
    f) lesdits moyens pour induire un mouvement tourbillonnaire dans le courant de gaz étant constitués par des fentes (7) formées sur le côté externe de la buse de pression (6); et
    g) une sortie de gaz (13) disposée dans la portion inférieure de ladite chambre de séchage (8) pour en éliminer le gaz d'échappement.
EP19890113481 1988-01-29 1989-07-21 Dispositif de séchage par pulvérisation Expired - Lifetime EP0408801B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1989624848 DE68924848T2 (de) 1989-07-21 1989-07-21 Sprühtrocknungsvorrichtung.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63019008A JP2524379B2 (ja) 1988-01-29 1988-01-29 ノズル装置とそれを組込んでなるスプレ―ドライヤ―装置

Publications (2)

Publication Number Publication Date
EP0408801A1 EP0408801A1 (fr) 1991-01-23
EP0408801B1 true EP0408801B1 (fr) 1995-11-15

Family

ID=11987480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890113481 Expired - Lifetime EP0408801B1 (fr) 1988-01-29 1989-07-21 Dispositif de séchage par pulvérisation

Country Status (2)

Country Link
EP (1) EP0408801B1 (fr)
JP (1) JP2524379B2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7967221B2 (en) 2002-12-30 2011-06-28 Novartis Ag Prefilming atomizer
US8173168B2 (en) 1994-03-07 2012-05-08 Novartis Pharma Ag Dispersible macromolecule compositions and methods for their preparation and use
WO2012116697A1 (fr) 2011-02-28 2012-09-07 Gea Process Engineering A/S Buse à deux fluides sous pression à mélange externe et procédé de séchage par pulvérisation
US8273330B2 (en) 2002-04-25 2012-09-25 Nektar Therapeutics Particulate materials
US8337895B2 (en) 2000-06-30 2012-12-25 Novartis Ag Spray drying process control of drying kinetics
US8802149B2 (en) 1996-12-31 2014-08-12 Novartis Pharma Ag Systems and processes for spray drying hydrophobic and hydrophilic components
US8936813B2 (en) 2001-11-01 2015-01-20 Novartis Ag Spray drying methods and related compositions
US10569187B2 (en) 2011-02-28 2020-02-25 Gea Process Engineering A/S External mixing pressurized two-fluid nozzle and a spray drying method

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2524379B2 (ja) * 1988-01-29 1996-08-14 大川原化工機株式会社 ノズル装置とそれを組込んでなるスプレ―ドライヤ―装置
US5499768A (en) * 1989-05-31 1996-03-19 Ohkawara Kakohki Co., Ltd. Spray nozzle unit
US9339459B2 (en) 2003-04-24 2016-05-17 Nektar Therapeutics Particulate materials
BRPI1006722A2 (pt) 2009-04-09 2017-10-10 Entegrion Inc "método de preparação de hemoderivados desidratado, hemoderivados desidratados, bandagem ou auxílio cirúrgico, método para a preparação de plaquetas sanguíneas fixas desidratadas, plaquetas sanguíneas fixas desidratadas, método para o tratamento de um paciente que sofre de um distúrbio sanguíneo e plaquetas de sangue fixas secas por atomização tendo geometria com cavidades esféricas"
WO2011035062A2 (fr) 2009-09-16 2011-03-24 Velico Medical, Inc. Plasma humain séché par atomisation
EP2555752B1 (fr) 2010-04-09 2019-06-26 Pacira Pharmaceuticals, Inc. Procédé de formulation de liposomes multivésiculaires
DE102011078508B4 (de) 2011-07-01 2017-11-09 Lechler Gmbh Vollkegeldüse
DE102011120717A1 (de) * 2011-12-12 2013-06-13 Sm-Klebetechnik Vertriebs Gmbh Düse
FR3023177B1 (fr) 2014-07-04 2016-08-12 Centre Nat De La Rech Scient (C N R S) Procede de preparation de co-cristaux par evaporation flash
EP4055337B1 (fr) * 2019-11-08 2024-08-21 Capsugel Belgium NV Ensemble de buse de flash
WO2024059771A1 (fr) * 2022-09-15 2024-03-21 Velico Medical, Inc. Administration de plasma en deux phases
US20240123367A1 (en) * 2022-09-15 2024-04-18 Velico Medical, Inc. Nozzle For A Disposable For Use With Spray Drying System
US12083447B2 (en) 2022-09-15 2024-09-10 Velico Medical, Inc. Alignment of a disposable for a spray drying plasma system
US11841189B1 (en) 2022-09-15 2023-12-12 Velico Medical, Inc. Disposable for a spray drying system
US12246093B2 (en) 2022-09-15 2025-03-11 Velico Medical, Inc. Methods for making spray dried plasma
US11998861B2 (en) 2022-09-15 2024-06-04 Velico Medical, Inc. Usability of a disposable for a spray drying plasma system
US11975274B2 (en) 2022-09-15 2024-05-07 Velico Medical, Inc. Blood plasma product
WO2024059770A1 (fr) 2022-09-15 2024-03-21 Velico Medical, Inc. Système de séchage par pulvérisation rapide
US12246266B2 (en) 2022-09-15 2025-03-11 Velico Medical, Inc. Disposable for a spray drying system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE476795A (fr) * 1946-12-31 1947-10-17
JPS5141693B1 (fr) * 1971-05-24 1976-11-11
JPS6110775Y2 (fr) * 1979-10-25 1986-04-05
JP2524379B2 (ja) * 1988-01-29 1996-08-14 大川原化工機株式会社 ノズル装置とそれを組込んでなるスプレ―ドライヤ―装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8173168B2 (en) 1994-03-07 2012-05-08 Novartis Pharma Ag Dispersible macromolecule compositions and methods for their preparation and use
US8802149B2 (en) 1996-12-31 2014-08-12 Novartis Pharma Ag Systems and processes for spray drying hydrophobic and hydrophilic components
US8337895B2 (en) 2000-06-30 2012-12-25 Novartis Ag Spray drying process control of drying kinetics
US8936813B2 (en) 2001-11-01 2015-01-20 Novartis Ag Spray drying methods and related compositions
US8273330B2 (en) 2002-04-25 2012-09-25 Nektar Therapeutics Particulate materials
US7967221B2 (en) 2002-12-30 2011-06-28 Novartis Ag Prefilming atomizer
US8616464B2 (en) 2002-12-30 2013-12-31 Novartis Ag Prefilming atomizer
WO2012116697A1 (fr) 2011-02-28 2012-09-07 Gea Process Engineering A/S Buse à deux fluides sous pression à mélange externe et procédé de séchage par pulvérisation
US9981200B2 (en) 2011-02-28 2018-05-29 Gea Process Engineering A/S External mixing pressurized two-fluid nozzle and a spray drying method
US10569187B2 (en) 2011-02-28 2020-02-25 Gea Process Engineering A/S External mixing pressurized two-fluid nozzle and a spray drying method

Also Published As

Publication number Publication date
JPH01194901A (ja) 1989-08-04
JP2524379B2 (ja) 1996-08-14
EP0408801A1 (fr) 1991-01-23

Similar Documents

Publication Publication Date Title
EP0408801B1 (fr) Dispositif de séchage par pulvérisation
US5227017A (en) Spray drying apparatus equipped with a spray nozzle unit
EP0214441B1 (fr) Sécheur et procédé de séchage
US5845846A (en) Spraying nozzle and method for ejecting liquid as fine particles
EP0717095B1 (fr) Buse à jet pour utilisation dans le craquage catalytique fluidisé
US5499768A (en) Spray nozzle unit
JPS6161660A (ja) 粘性液体を霧化しスプレイ乾燥する装置および方法
EP0057720B1 (fr) Atomisation de gaz variable
JPH0994494A (ja) 内部混合気の霧化噴霧用ノズル
CA2442757C (fr) Appareil de granulation de lit fluidise
CA2132039A1 (fr) Assemblage de buse d'aspiration pour pistolet a peinture hvlp
JPS5953101B2 (ja) 霧状化噴射ノズル
US20040251320A1 (en) Nozzle for coating surfaces
WO1993007962A1 (fr) Dispositif d'application de revetement
US4688724A (en) Low pressure misting jet
US4229249A (en) Production of a powder of polyvinylchloride or a vinylchloride copolymerizate suitable for producing plastisols
WO1999033555A1 (fr) Procede et appareil de formation de granules a partir d'un bain de fusion de produits chimiques
US4572100A (en) Apparatus for moistening loose material
JPH04363126A (ja) 噴霧乾燥造粒装置
RU2078622C1 (ru) Пневматическая форсунка
US20030098360A1 (en) Twin fluid centrifugal nozzle for spray dryers
US4063686A (en) Spray nozzle
CA2221897A1 (fr) Tuyere pour la pulverisation de liquides
US3394430A (en) Apparatus for coating fluid and semifluid substance with solid materials
JP2606318Y2 (ja) 二流体噴霧ノズル

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901128

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI NL

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OHKAWARA KAKOHKI CO., LTD.

RIN1 Information on inventor provided before grant (corrected)

Inventor name: AISHIMA, SHIZUO

Inventor name: KODERA, AKIRA

Inventor name: TANAKA, TOSHIYUKI

17Q First examination report despatched

Effective date: 19921006

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI NL

REF Corresponds to:

Ref document number: 68924848

Country of ref document: DE

Date of ref document: 19951221

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: DR. CONRAD A. RIEDERER PATENTANWALT

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010713

Year of fee payment: 13

Ref country code: DE

Payment date: 20010713

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010716

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010717

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20010719

Year of fee payment: 13

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020721

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020721

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20030201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST