ES2033524T3 - Aparato y metodo para producir polvos ceramicos finos y uniformes. - Google Patents
Aparato y metodo para producir polvos ceramicos finos y uniformes.Info
- Publication number
- ES2033524T3 ES2033524T3 ES198989301109T ES89301109T ES2033524T3 ES 2033524 T3 ES2033524 T3 ES 2033524T3 ES 198989301109 T ES198989301109 T ES 198989301109T ES 89301109 T ES89301109 T ES 89301109T ES 2033524 T3 ES2033524 T3 ES 2033524T3
- Authority
- ES
- Spain
- Prior art keywords
- chamber
- reactor chamber
- refrigeration
- cold
- transport member
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0095—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes in which two different types of particles react with each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/12—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by gravity in a downward flow
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/064—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with boron
- C01B21/0645—Preparation by carboreductive nitridation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/907—Oxycarbides; Sulfocarbides; Mixture of carbides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/991—Boron carbide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B35/00—Boron; Compounds thereof
- C01B35/02—Boron; Borides
- C01B35/04—Metal borides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/563—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on boron carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00477—Controlling the temperature by thermal insulation means
- B01J2208/00495—Controlling the temperature by thermal insulation means using insulating materials or refractories
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/85—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by XPS, EDX or EDAX data
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
- C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/90—Other properties not specified above
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Nanotechnology (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Carbon And Carbon Compounds (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Ceramic Products (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Disintegrating Or Milling (AREA)
- Saccharide Compounds (AREA)
Abstract
SE PREPARA POLVO CERAMICO FINO, UNIFORME, UTILIZANDO UN APARATO QUE CONTIENE UN MIEMBRO DE TRANSPORTE DE REACTIVO FRIO (6); UNA CAMARA REACTOR (16); UN MEDO DE CALENTAMIENTO (4); Y UNA CAMARA DE REFRIGERACION (42); EL MIEMBRO DE TRANSPORTE DE REACTIVO COMUNICA CON LA CAMARA REACTOR, E INCLUYE UN ESPACIO DE FLUJO DE GAS A LO LARGO DEL PERIMETRO DEL MIEMBRO DE TRANSPORTE, TAMBIEN EN COMUNICACION CON LA CAMARA REACTOR. ESTA DEFINE UNA ZONA DE REACCION QUE INCLUYE UN MEDIO DE CALENTAMIENTO. LA CAMARA FRIA DEFINE UNA ZONA DE REFRIGERACION QUE COMUNICA CON LA CAMARA REACTOR. PREFERIBLEMENTE, EL DIAMETRO DE LA ZONA DE REFRIGERACION ES MAYOR QUE EL DIAMETRO DE LA ENTRADA DE REFRIGERACION. LAS TEMPERATURAS DEL MIEMBRO DE TRANSPORTE DE REACTIVO, LA CAMARA REACTOR, Y LA CAMARA FRIA SE CONTROLAN INDEPENDIENTEMENTE. EL APARATO ES PARTICULARMENTE ADECUADO PARA PRODUCIR POLVOS CERAMICOS QUE CONTIENEN BORO POR REDUCCION CARBOTERMICA RAPIDA DE OXIDO BORICO O DE SU HIDRATO Y UNA FUENTE DE CARBON.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/152,613 US5110565A (en) | 1988-02-05 | 1988-02-05 | Apparatus for producing uniform, fine ceramic powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2033524T3 true ES2033524T3 (es) | 1993-03-16 |
Family
ID=22543648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES198989301109T Expired - Lifetime ES2033524T3 (es) | 1988-02-05 | 1989-02-03 | Aparato y metodo para producir polvos ceramicos finos y uniformes. |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US5110565A (es) |
| EP (1) | EP0327401B1 (es) |
| JP (1) | JP2874925B2 (es) |
| KR (1) | KR900700184A (es) |
| CN (1) | CN1036003A (es) |
| AT (1) | ATE73007T1 (es) |
| BR (1) | BR8905298A (es) |
| CA (1) | CA1334331C (es) |
| DE (1) | DE68900886D1 (es) |
| ES (1) | ES2033524T3 (es) |
| FI (1) | FI894697A7 (es) |
| IL (1) | IL89163A (es) |
| NO (1) | NO174694C (es) |
| WO (1) | WO1989007011A1 (es) |
Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804525A (en) * | 1986-04-14 | 1989-02-14 | The Dow Chemical Company | Producing boron carbide |
| US5126121A (en) * | 1991-05-03 | 1992-06-30 | The Dow Chemical Company | Process for preparing aluminum nitride powder via controlled combustion nitridation |
| US5219804A (en) * | 1992-01-10 | 1993-06-15 | The Dow Chemical Company | Process for preparing ultrafine aluminum nitride powder |
| US7576296B2 (en) * | 1995-03-14 | 2009-08-18 | Battelle Energy Alliance, Llc | Thermal synthesis apparatus |
| AT404912B (de) * | 1996-11-04 | 1999-03-25 | Plansee Ag | Verfahren zur herstellung von pulver-pressansätzen für feinkörniges hartmetall |
| US6214078B1 (en) | 1997-11-25 | 2001-04-10 | Ferro Corporation | High temperature ceramic filter |
| ES2188298B1 (es) * | 1999-06-15 | 2004-08-16 | Fundacion Inasmet | Procedimiento continuo de fabricacion de materiales en polvo por combustion y reactor para la puesta en practica del mismo. |
| WO2001046067A1 (en) * | 1999-12-21 | 2001-06-28 | Bechtel Bwxt Idaho, Llc | Hydrogen and elemental carbon production from natural gas and other hydrocarbons |
| CN1419482A (zh) * | 2000-02-22 | 2003-05-21 | Omg美国公司 | 含金属的化合物快速转化形成金属或金属氧化物 |
| CN1289392C (zh) * | 2001-07-30 | 2006-12-13 | 三菱麻铁里亚尔株式会社 | 微粒碳化钨粉末的制造方法及粉末 |
| US7303593B1 (en) | 2002-09-16 | 2007-12-04 | Sandia Corporation | Method to blend separator powders |
| GB2445218B (en) * | 2006-09-21 | 2011-05-25 | Smith International | Atomic layer deposition nanocoating on cutting tool powder materials |
| WO2008102357A2 (en) * | 2007-02-22 | 2008-08-28 | Boron Compounds Ltd. | Method for the preparation of ceramic materials |
| JP5168690B2 (ja) * | 2007-03-23 | 2013-03-21 | 独立行政法人産業技術総合研究所 | ホウ素ナノ粒子又はホウ素含有ナノ粒子及びその製造方法 |
| US7919040B2 (en) * | 2007-08-08 | 2011-04-05 | Saint-Gobain Ceramics & Plastics, Inc. | Method of preparing pressureless sintered, highly dense boron carbide materials |
| KR101121803B1 (ko) * | 2008-01-17 | 2012-03-20 | 경희대학교 산학협력단 | 정밀온도 제어가 가능한 연속식 냉각 결정화 반응장치 및이를 포함하는 결정화 분리공정 시스템 |
| US20100055017A1 (en) * | 2008-09-03 | 2010-03-04 | Ppg Industries Ohio, Inc. | Methods for the production of ultrafine metal carbide particles and hydrogen |
| JP2013500227A (ja) * | 2009-07-24 | 2013-01-07 | サン−ゴバン セラミックス アンド プラスティクス,インコーポレイティド | 焼結炭化ホウ素の形成方法 |
| JP5866690B2 (ja) * | 2009-09-04 | 2016-02-17 | 国立研究開発法人産業技術総合研究所 | 球状ナノ粒子の製造方法及び同製造方法によって得られた球状ナノ粒子 |
| EP2493813B1 (en) * | 2009-10-30 | 2019-12-04 | Alcoa USA Corp. | Methods of making titanium diboride powders |
| JP5495748B2 (ja) * | 2009-12-10 | 2014-05-21 | 株式会社トクヤマ | 窒化アルミニウム粉末 |
| DE102011050171A1 (de) * | 2011-05-06 | 2012-11-08 | Heinrich-Heine-Universität Düsseldorf | Verfahren und Anordnung zum Detektieren eines ersten Gases in einem wenigstens ein weiteres Gas umfassenden Gasgemisch |
| EP3475246A4 (en) * | 2016-06-23 | 2020-01-08 | Alcoa USA Corp. | SYSTEMS AND METHODS FOR MANUFACTURING CERAMIC POWDERS AND CERAMIC PRODUCTS |
| EP3490929A1 (en) * | 2016-07-26 | 2019-06-05 | Arconic Inc. | Methods for making boron nitride ceramic powder |
| CN106631032B (zh) * | 2016-10-12 | 2019-10-15 | 淄博晶亿陶瓷科技有限公司 | 一种高纯二硼化钛粉体及其制备方法 |
| US11193191B2 (en) * | 2017-11-28 | 2021-12-07 | University Of Maryland, College Park | Thermal shock synthesis of multielement nanoparticles |
| CN108445146B (zh) * | 2018-05-28 | 2024-02-02 | 湖南三德科技股份有限公司 | 一种用于元素分析仪的均流机构 |
| WO2020046229A2 (en) * | 2018-08-27 | 2020-03-05 | Ak-Kim Kimya Sanayi Ve Ticaret Anonim Sirketi | Production of boron carbide, metal carbide and/or metal boride at high temperature and in continuous production line |
| CN110937605B (zh) * | 2019-12-18 | 2023-03-28 | 赛福纳米科技(徐州)有限公司 | 碳化硼纯化方法 |
| CN114409412A (zh) * | 2020-10-28 | 2022-04-29 | 中国科学院理化技术研究所 | 一种SiB6的化学炉合成方法 |
| CN114543523B (zh) * | 2022-01-19 | 2023-10-24 | 福建华清电子材料科技有限公司 | 精准控制氮气供应的氮化铝粉末制备石墨炉 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA665291A (en) * | 1963-06-18 | Union Carbide Corporation | Ultrafine titanium boride | |
| US3353885A (en) * | 1966-02-01 | 1967-11-21 | Howard C Hanson | Expansible multi-purpose cabinet |
| US3989782A (en) * | 1973-12-29 | 1976-11-02 | Joseph Lucas Limited | Method of forming a sintered ceramic product |
| US4266977A (en) * | 1975-02-03 | 1981-05-12 | Ppg Industries, Inc. | Submicron carbon-containing titanium boride powder and method for preparing same |
| DE2620313C3 (de) * | 1976-05-07 | 1981-04-09 | Andrjušin, Aleksandr Iosifovič | Verfahren zur Erzeugung von Karbiden und Anlage zur Durchführung des Verfahrens |
| US4597948A (en) * | 1982-12-27 | 1986-07-01 | Sri International | Apparatus for obtaining silicon from fluosilicic acid |
| US4666873A (en) * | 1983-10-14 | 1987-05-19 | General Electric Company | Aluminum nitride-boron nitride composite article and method of making same |
| US4643890A (en) * | 1984-09-05 | 1987-02-17 | J. M. Huber Corporation | Perforated reactor tube for a fluid wall reactor and method of forming a fluid wall |
| FR2591412A1 (fr) * | 1985-12-10 | 1987-06-12 | Air Liquide | Procede de fabrication de poudres et reacteur etanche a plasma micro-onde |
| JPH0638911B2 (ja) * | 1986-03-08 | 1994-05-25 | 日本セメント株式会社 | 非酸化物粉末の製造方法 |
-
1988
- 1988-02-05 US US07/152,613 patent/US5110565A/en not_active Expired - Lifetime
-
1989
- 1989-02-01 KR KR1019890701837A patent/KR900700184A/ko not_active Ceased
- 1989-02-01 WO PCT/US1989/000399 patent/WO1989007011A1/en not_active Ceased
- 1989-02-01 JP JP1502868A patent/JP2874925B2/ja not_active Expired - Lifetime
- 1989-02-01 BR BR898905298A patent/BR8905298A/pt unknown
- 1989-02-03 AT AT89301109T patent/ATE73007T1/de not_active IP Right Cessation
- 1989-02-03 ES ES198989301109T patent/ES2033524T3/es not_active Expired - Lifetime
- 1989-02-03 IL IL89163A patent/IL89163A/xx not_active IP Right Cessation
- 1989-02-03 DE DE8989301109T patent/DE68900886D1/de not_active Expired - Lifetime
- 1989-02-03 CA CA000589999A patent/CA1334331C/en not_active Expired - Lifetime
- 1989-02-03 EP EP89301109A patent/EP0327401B1/en not_active Expired - Lifetime
- 1989-02-04 CN CN89101627A patent/CN1036003A/zh active Pending
- 1989-10-04 NO NO893946A patent/NO174694C/no unknown
- 1989-10-04 FI FI894697A patent/FI894697A7/fi not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE73007T1 (de) | 1992-03-15 |
| IL89163A0 (en) | 1989-09-10 |
| EP0327401A3 (en) | 1990-03-07 |
| DE68900886D1 (de) | 1992-04-09 |
| BR8905298A (pt) | 1990-11-27 |
| NO174694B (no) | 1994-03-14 |
| US5110565A (en) | 1992-05-05 |
| EP0327401B1 (en) | 1992-03-04 |
| FI894697A0 (fi) | 1989-10-04 |
| FI894697A7 (fi) | 1989-10-04 |
| CA1334331C (en) | 1995-02-14 |
| CN1036003A (zh) | 1989-10-04 |
| NO893946L (no) | 1989-12-04 |
| EP0327401A2 (en) | 1989-08-09 |
| WO1989007011A1 (en) | 1989-08-10 |
| JPH02503168A (ja) | 1990-10-04 |
| IL89163A (en) | 1992-07-15 |
| NO893946D0 (no) | 1989-10-04 |
| JP2874925B2 (ja) | 1999-03-24 |
| NO174694C (no) | 1994-06-22 |
| KR900700184A (ko) | 1990-08-11 |
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