EP1496324A1 - Kühlgerät mit automatischer zeitbestimmter Entfrostung - Google Patents

Kühlgerät mit automatischer zeitbestimmter Entfrostung Download PDF

Info

Publication number: EP1496324A1
Authority: EP; European Patent Office
Prior art keywords: time; defrost; compressor; refrigeration appliance; commencement
Prior art date: 2003-07-09
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.): Granted

Application number

EP04103090A

Other languages

English (en)

French (fr)

Other versions

EP1496324B1 (de

Inventor

Dejan Ergarac

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.)

Whirlpool Corp

Original Assignee

Whirlpool Corp

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.)

2003-07-09

Filing date

2004-06-30

Publication date

2005-01-12

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33446436&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1496324(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2004-06-30 Application filed by Whirlpool Corp filed Critical Whirlpool Corp

2004-06-30 Priority to PL04103090T priority Critical patent/PL1496324T3/pl

2005-01-12 Publication of EP1496324A1 publication Critical patent/EP1496324A1/de

2013-09-18 Application granted granted Critical

2013-09-18 Publication of EP1496324B1 publication Critical patent/EP1496324B1/de

2024-06-30 Anticipated expiration legal-status Critical

Status Revoked legal-status Critical Current

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/008—Defroster control by timer
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/23—Time delays
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer

Definitions

the present invention relates to a refrigeration appliance with automatic time-determined defrost for containing food, drinks, liquid or solid substances etc.
Refrigeration appliances with automatic defrost systems known colloquially as no-frost refrigerators have long been available.
a film of ice forms on the evaporator, usually positioned in the conditioned temperature compartment in contact with the air present in the compartment, due to condensation and subsequent freezing of the moisture present in the air within the compartment.
the formation of this ice film prejudices heat transfer between the conditioned environment and the evaporator, so reducing the efficiency of the refrigeration cycle.
No-frost refrigerators present an automatic defrost system based on the activation of an electrical resistance element in heat transfer contact with the evaporator.
the defrost resistance element is activated manually or automatically by electronic devices which control the operating time of the compressor.
a new defrost cycle is normally carried out when the total time for which the compressor has operated reaches a predetermined value, for example 8 hours. These 8 hours can evidently be reached over quite different time periods, for example because periods of operation are interrupted by periods of non-operation. Assuming for example that the compressor operates for 50% of the time, a defrost operation will be automatically performed every 16 hours.
the duration of the effective defrost cycle can also be controlled, for example on the basis of the power of the resistance element or the size of the evaporator.
defrosting requires a considerable quantity of electrical energy.
just the defrost cycle for a common domestic refrigerator consumes of the order of 250 kWh annually.
defrosting can take place at any moment, and hence at times at which the electrical energy cost is at its highest.
the technical aim of the present invention is therefore to provide a device and process for the night-time defrosting of refrigerators which enable the starting time of the defrost cycle to be optimized, by advancing it or delaying it with respect to the time based on the use of the refrigerator (and hence of the compressor), so that the defrost cycle takes place at least partly during the hours of low energy tariff.
a refrigerator compartment contains an evaporator unit 4, comprising a substantially hairpin-type evaporator 5 in heat transfer contact with the air present in the compartment and conveyed towards the evaporator 5 by a fan V.
a refrigerant fluid flows through the evaporator, with which a suitably sized conventional resistance element 6 is in heat transfer contact.
the evaporator 5 forms part of a conventional refrigeration unit 7, comprising a compressor 8, a condenser 9 and a throttle valve 10.
the resistance element 6 is connected to a current source 11 and to a static switch 12 (triac), the output 12a of which is controlled by a microprocessor 13.
the microprocessor 13 hence controls the opening/closure of the static switch 12 and also, via the line 14, the starting/stopping of the compressor 8 of the circuit of the refrigeration unit 7.
the microprocessor 13 is suitable for making calculations, and is connected to a clock 15, to a timer 18, to a dynamic memory unit 17 and to a static memory unit 16.
the static memory unit 16 stores information regarding the value of preset parameters such as the operating time Tr required of the defrosting resistance element 6 if this time is not determined by the operation of the bimetallic switch associated with the evaporator, the total operating time Ts of the compressor 8 after which defrosting is required (8 hours in the example), and the maximum time Tdmax between two consecutive defrost operations (50 hours in the example).
the defrost time comprises both the operating time Tr of the resistance element and the time required for the compressor to annul the overheating of the environment caused by the resistance element 6 itself; in the example the sum of these two times is quantified as 3 hours. In the example there is only one time band of low tariff electrical energy during the day, this being assumed to be from 10 p.m. to 6 a.m.
the parameters Tdmax, Ts, Tr can have different values, suitable for a particular environment or apparatus.
the said parameters can be decided each time, so that they become variables (for example Ts(Td)), determined automatically by the microprocessor 13 according to the values of other variables, such as the number of openings of the door 2f, the ambient temperature, atmospheric humidity, etc.
the time Tp for which the defrost resistance element operates can be preset or determined by the (bimetallic) temperature switch present on the evaporator 5.
the calculation of the time and date effected in S5 for the next defrost cycle can be based on more complex calculation algorithms with a greater number of variables, such as ambient temperature, atmospheric humidity or the number of openings of the door 2f.
a buzzer can sound or any other visual or acoustic signals be provided.
the clock 15 can be set manually by the user or be of radio-controlled automatically set type.
the low tariff band can be different from that from 10 p.m. to 6 a.m. There can also be more than one time band (of low tariff or otherwise) within which defrost is allowed to take place.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Physics & Mathematics (AREA)
Mechanical Engineering (AREA)
Thermal Sciences (AREA)
General Engineering & Computer Science (AREA)
Defrosting Systems (AREA)

EP04103090.9A 2003-07-09 2004-06-30 Kühlgerät mit automatischer zeitbestimmter Entfrostung Revoked EP1496324B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL04103090T PL1496324T3 (pl)	2003-07-09	2004-06-30	Urządzenie chłodzące z automatycznie określanym czasem odszraniania

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
IT001395A ITMI20031395A1 (it)	2003-07-09	2003-07-09	Refrigeratore a sbrinamento automatico temporalmente indirizzato.
ITMI20031395		2003-07-09

Publications (2)

Publication Number	Publication Date
EP1496324A1 true EP1496324A1 (de)	2005-01-12
EP1496324B1 EP1496324B1 (de)	2013-09-18

Family

ID=33446436

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP04103090.9A Revoked EP1496324B1 (de)	2003-07-09	2004-06-30	Kühlgerät mit automatischer zeitbestimmter Entfrostung

Country Status (3)

Country	Link
EP (1)	EP1496324B1 (de)
IT (1)	ITMI20031395A1 (de)
PL (1)	PL1496324T3 (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1709376A1 (de)	2003-12-15	2006-10-11	Arcelik Anonim Sirketi	Kühlvorrichtung und steuerverfahren
GB2446728A (en) *	2004-08-17	2008-08-20	Imi Cornelius	A method of defrosting an evaporator in a beverage dispense system
EP2314960A2 (de)	2009-10-21	2011-04-27	Diehl AKO Stiftung & Co. KG	Adaptive Abtausteuerung und Verfahren für ein Kühlgerät
CN103017474A (zh) *	2011-09-27	2013-04-03	泰州乐金电子冷机有限公司	冰箱以及冰箱除霜方法
US8474279B2 (en)	2008-09-15	2013-07-02	General Electric Company	Energy management of household appliances
US8522579B2 (en)	2009-09-15	2013-09-03	General Electric Company	Clothes washer demand response with dual wattage or auxiliary heater
US8541719B2 (en)	2008-09-15	2013-09-24	General Electric Company	System for reduced peak power consumption by a cooking appliance
US8548638B2 (en)	2008-09-15	2013-10-01	General Electric Company	Energy management system and method
US8803040B2 (en)	2008-09-15	2014-08-12	General Electric Company	Load shedding for surface heating units on electromechanically controlled cooking appliances
US8801862B2 (en)	2010-09-27	2014-08-12	General Electric Company	Dishwasher auto hot start and DSM
US8843242B2 (en)	2008-09-15	2014-09-23	General Electric Company	System and method for minimizing consumer impact during demand responses
US8869569B2 (en)	2009-09-15	2014-10-28	General Electric Company	Clothes washer demand response with at least one additional spin cycle
US8943857B2 (en)	2009-09-15	2015-02-03	General Electric Company	Clothes washer demand response by duty cycling the heater and/or the mechanical action
US8943845B2 (en)	2009-09-15	2015-02-03	General Electric Company	Window air conditioner demand supply management response
US9303878B2 (en)	2008-09-15	2016-04-05	General Electric Company	Hybrid range and method of use thereof
US10309713B2 (en)	2014-10-22	2019-06-04	Honeywell International Inc.	Scheduling defrost events and linking refrigeration circuits in a refrigeration system
CN115615084A (zh) *	2021-07-15	2023-01-17	青岛海尔电冰箱有限公司	冰箱预约制冰方法及冰箱

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3898860A (en) *	1974-10-15	1975-08-12	Texas Instruments Inc	Automatic defrosting control system
US4327557A (en) *	1980-05-30	1982-05-04	Whirlpool Corporation	Adaptive defrost control system
US5483804A (en) *	1994-03-28	1996-01-16	Sanyo Electric Co., Ltd.	Defrost control apparatus for refrigerator
US5515692A (en) *	1993-12-09	1996-05-14	Long Island Lighting Company	Power consumption determining device and method
EP1225406A2 (de) *	2001-01-18	2002-07-24	JTL Systems Limited	Verfahren und Gerät zur Abtauregelung
WO2003098134A1 (de) *	2002-05-16	2003-11-27	BSH Bosch und Siemens Hausgeräte GmbH	Gefriergerät mit abtaufunktion und betriebsverfahren dafür

2003
- 2003-07-09 IT IT001395A patent/ITMI20031395A1/it unknown
2004
- 2004-06-30 PL PL04103090T patent/PL1496324T3/pl unknown
- 2004-06-30 EP EP04103090.9A patent/EP1496324B1/de not_active Revoked

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3898860A (en) *	1974-10-15	1975-08-12	Texas Instruments Inc	Automatic defrosting control system
US4327557A (en) *	1980-05-30	1982-05-04	Whirlpool Corporation	Adaptive defrost control system
US5515692A (en) *	1993-12-09	1996-05-14	Long Island Lighting Company	Power consumption determining device and method
US5483804A (en) *	1994-03-28	1996-01-16	Sanyo Electric Co., Ltd.	Defrost control apparatus for refrigerator
EP1225406A2 (de) *	2001-01-18	2002-07-24	JTL Systems Limited	Verfahren und Gerät zur Abtauregelung
WO2003098134A1 (de) *	2002-05-16	2003-11-27	BSH Bosch und Siemens Hausgeräte GmbH	Gefriergerät mit abtaufunktion und betriebsverfahren dafür

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1709376A1 (de)	2003-12-15	2006-10-11	Arcelik Anonim Sirketi	Kühlvorrichtung und steuerverfahren
GB2446728A (en) *	2004-08-17	2008-08-20	Imi Cornelius	A method of defrosting an evaporator in a beverage dispense system
GB2446728B (en) *	2004-08-17	2009-03-11	Imi Cornelius	Improvements in or relating to beverage dispense systems
US8843242B2 (en)	2008-09-15	2014-09-23	General Electric Company	System and method for minimizing consumer impact during demand responses
US8730018B2 (en)	2008-09-15	2014-05-20	General Electric Company	Management control of household appliances using continuous tone-coded DSM signalling
US8474279B2 (en)	2008-09-15	2013-07-02	General Electric Company	Energy management of household appliances
US9303878B2 (en)	2008-09-15	2016-04-05	General Electric Company	Hybrid range and method of use thereof
US8541719B2 (en)	2008-09-15	2013-09-24	General Electric Company	System for reduced peak power consumption by a cooking appliance
US8548638B2 (en)	2008-09-15	2013-10-01	General Electric Company	Energy management system and method
US8617316B2 (en)	2008-09-15	2013-12-31	General Electric Company	Energy management of dishwasher appliance
US8618452B2 (en)	2008-09-15	2013-12-31	General Electric Company	Energy management of household appliances
US8626347B2 (en)	2008-09-15	2014-01-07	General Electric Company	Demand side management module
US8627689B2 (en)	2008-09-15	2014-01-14	General Electric Company	Energy management of clothes washer appliance
US8704639B2 (en)	2008-09-15	2014-04-22	General Electric Company	Management control of household appliances using RFID communication
US8803040B2 (en)	2008-09-15	2014-08-12	General Electric Company	Load shedding for surface heating units on electromechanically controlled cooking appliances
US8793021B2 (en)	2008-09-15	2014-07-29	General Electric Company	Energy management of household appliances
US8869569B2 (en)	2009-09-15	2014-10-28	General Electric Company	Clothes washer demand response with at least one additional spin cycle
US8943857B2 (en)	2009-09-15	2015-02-03	General Electric Company	Clothes washer demand response by duty cycling the heater and/or the mechanical action
US8943845B2 (en)	2009-09-15	2015-02-03	General Electric Company	Window air conditioner demand supply management response
US8522579B2 (en)	2009-09-15	2013-09-03	General Electric Company	Clothes washer demand response with dual wattage or auxiliary heater
EP2314960A2 (de)	2009-10-21	2011-04-27	Diehl AKO Stiftung & Co. KG	Adaptive Abtausteuerung und Verfahren für ein Kühlgerät
US8801862B2 (en)	2010-09-27	2014-08-12	General Electric Company	Dishwasher auto hot start and DSM
CN103017474A (zh) *	2011-09-27	2013-04-03	泰州乐金电子冷机有限公司	冰箱以及冰箱除霜方法
US10309713B2 (en)	2014-10-22	2019-06-04	Honeywell International Inc.	Scheduling defrost events and linking refrigeration circuits in a refrigeration system
CN115615084A (zh) *	2021-07-15	2023-01-17	青岛海尔电冰箱有限公司	冰箱预约制冰方法及冰箱

Also Published As

Publication number	Publication date
PL1496324T3 (pl)	2013-12-31
EP1496324B1 (de)	2013-09-18
ITMI20031395A1 (it)	2005-01-10

Publication	Publication Date	Title
EP1496324B1 (de)	2013-09-18	Kühlgerät mit automatischer zeitbestimmter Entfrostung
US6817195B2 (en)	2004-11-16	Reduced energy refrigerator defrost method and apparatus
US6631620B2 (en)	2003-10-14	Adaptive refrigerator defrost method and apparatus
US6694755B2 (en)	2004-02-24	Adaptive defrost control device and method
US4297852A (en)	1981-11-03	Refrigerator defrost control with control of time interval between defrost cycles
CN101571339B (zh)	2012-08-29	冰箱除霜控制方法及应用该方法的冰箱
US5564286A (en)	1996-10-15	Refrigerator defrost control apparatus and method
CA1228139A (en)	1987-10-13	Appliance control system
US9032751B2 (en)	2015-05-19	Adaptive defrost controller for a refrigeration device
US6205800B1 (en)	2001-03-27	Microprocessor controlled demand defrost for a cooled enclosure
CN107726712A (zh)	2018-02-23	冰箱控制方法及运用该控制方法的冰箱
EP0686818B1 (de)	2002-09-11	Verfahren zur Steuerung eines Kühlgerätes und ein Gerät zur Durchführung des Verfahrens
CN106152674B (zh)	2019-01-15	冰箱的控制方法和冰箱
EP1843111A2 (de)	2007-10-10	System und Verfahren zum Bestimmen der von einem Abtauheizer abgegebenen Abtauenergie
US10830523B2 (en)	2020-11-10	Refrigerator appliance and method of sabbath operation
RU2009105681A (ru)	2010-10-10	Холодильная машина и способ эксплуатации для нее
US5187941A (en)	1993-02-23	Method for controlling a refrigerator in low ambient temperature conditions
CN103597305B (zh)	2016-05-04	单回路式制冷器具
CN100374800C (zh)	2008-03-12	具有除霜功能的冷冻器具以及其运行方法
US4530218A (en)	1985-07-23	Refrigeration apparatus defrost control
US11493260B1 (en)	2022-11-08	Freezers and operating methods using adaptive defrost
US4358933A (en)	1982-11-16	Household refrigerator defrost system
KR100191533B1 (ko)	1999-06-15	냉장고의 제상 제어방법
EP0494785A1 (de)	1992-07-15	Temperatur-Regelsystem für einen Kühlschrank
US3899896A (en)	1975-08-19	Automatic defrosting control system

Legal Events

Date	Code	Title	Description
2004-11-26	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
2005-01-12	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
2005-01-12	AX	Request for extension of the european patent	Extension state: AL HR LT LV MK
2005-08-24	17P	Request for examination filed	Effective date: 20050628
2005-09-28	AKX	Designation fees paid	Designated state(s): DE FR GB IT PL
2007-02-14	17Q	First examination report despatched	Effective date: 20070111
2013-07-02	GRAP	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOSNIGR1
2013-07-31	INTG	Intention to grant announced	Effective date: 20130703
2013-08-09	GRAS	Grant fee paid	Free format text: ORIGINAL CODE: EPIDOSNIGR3
2013-08-16	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
2013-09-18	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB IT PL
2013-09-18	REG	Reference to a national code	Ref country code: GB Ref legal event code: FG4D
2013-11-14	REG	Reference to a national code	Ref country code: DE Ref legal event code: R096 Ref document number: 602004043354 Country of ref document: DE Effective date: 20131114
2013-12-31	REG	Reference to a national code	Ref country code: PL Ref legal event code: T3
2014-06-20	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
2014-07-23	26	Opposition filed	Opponent name: ARCELIK ANONIM SIRKETI Effective date: 20140613
2014-07-23	PLAX	Notice of opposition and request to file observation + time limit sent	Free format text: ORIGINAL CODE: EPIDOSNOBS2
2014-08-28	REG	Reference to a national code	Ref country code: DE Ref legal event code: R026 Ref document number: 602004043354 Country of ref document: DE Effective date: 20140613
2014-11-28	PLAF	Information modified related to communication of a notice of opposition and request to file observations + time limit	Free format text: ORIGINAL CODE: EPIDOSCOBS2
2015-02-03	PLBB	Reply of patent proprietor to notice(s) of opposition received	Free format text: ORIGINAL CODE: EPIDOSNOBS3
2016-05-16	REG	Reference to a national code	Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13
2016-11-10	PLCK	Communication despatched that opposition was rejected	Free format text: ORIGINAL CODE: EPIDOSNREJ1
2016-11-10	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE PATENT HAS BEEN GRANTED
2017-01-11	APBM	Appeal reference recorded	Free format text: ORIGINAL CODE: EPIDOSNREFNO
2017-01-11	APBP	Date of receipt of notice of appeal recorded	Free format text: ORIGINAL CODE: EPIDOSNNOA2O
2017-01-13	APAH	Appeal reference modified	Free format text: ORIGINAL CODE: EPIDOSCREFNO
2017-02-25	APBQ	Date of receipt of statement of grounds of appeal recorded	Free format text: ORIGINAL CODE: EPIDOSNNOA3O
2017-05-11	REG	Reference to a national code	Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14
2018-05-11	REG	Reference to a national code	Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15
2020-07-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20200512 Year of fee payment: 17 Ref country code: DE Payment date: 20200617 Year of fee payment: 17
2020-08-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20200618 Year of fee payment: 17 Ref country code: PL Payment date: 20200415 Year of fee payment: 17 Ref country code: IT Payment date: 20200512 Year of fee payment: 17
2020-11-25	REG	Reference to a national code	Ref country code: DE Ref legal event code: R064 Ref document number: 602004043354 Country of ref document: DE Ref country code: DE Ref legal event code: R103 Ref document number: 602004043354 Country of ref document: DE
2020-11-27	APBU	Appeal procedure closed	Free format text: ORIGINAL CODE: EPIDOSNNOA9O
2021-02-18	RDAF	Communication despatched that patent is revoked	Free format text: ORIGINAL CODE: EPIDOSNREV1
2021-02-18	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: PATENT REVOKED
2021-02-19	RDAG	Patent revoked	Free format text: ORIGINAL CODE: 0009271
2021-03-24	27W	Patent revoked	Effective date: 20201125
2021-03-24	GBPR	Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state	Effective date: 20201125