BR8706916A - Oxido cerico e seu processo de obtencao - Google Patents
Oxido cerico e seu processo de obtencaoInfo
- Publication number
- BR8706916A BR8706916A BR8706916A BR8706916A BR8706916A BR 8706916 A BR8706916 A BR 8706916A BR 8706916 A BR8706916 A BR 8706916A BR 8706916 A BR8706916 A BR 8706916A BR 8706916 A BR8706916 A BR 8706916A
- Authority
- BR
- Brazil
- Prior art keywords
- cerium
- precipitate
- strong base
- cerico
- oxide
- Prior art date
Links
- 238000001354 calcination Methods 0.000 abstract 2
- -1 carboxylate ions Chemical class 0.000 abstract 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 abstract 2
- 229940044927 ceric oxide Drugs 0.000 abstract 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 abstract 2
- 239000011148 porous material Substances 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 150000000703 Cerium Chemical class 0.000 abstract 1
- 229910052684 Cerium Inorganic materials 0.000 abstract 1
- UNJPQTDTZAKTFK-UHFFFAOYSA-K cerium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Ce+3] UNJPQTDTZAKTFK-UHFFFAOYSA-K 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
Classifications
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G56/00—Compounds of transuranic elements
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/613—10-100 m2/g
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/633—Pore volume less than 0.5 ml/g
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/64—Pore diameter
- B01J35/647—2-50 nm
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/66—Pore distribution
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/224—Oxides or hydroxides of lanthanides
- C01F17/235—Cerium oxides or hydroxides
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/391—Physical properties of the active metal ingredient
- B01J35/393—Metal or metal oxide crystallite size
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/01—Crystal-structural characteristics depicted by a TEM-image
-
- 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
- C01P2006/13—Surface area thermal stability thereof at high temperatures
-
- 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
- C01P2006/14—Pore volume
-
- 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
- C01P2006/16—Pore diameter
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Catalysts (AREA)
- Luminescent Compositions (AREA)
- Cephalosporin Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8617805A FR2608583B1 (fr) | 1986-12-19 | 1986-12-19 | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR8706916A true BR8706916A (pt) | 1988-07-26 |
Family
ID=9342087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR8706916A BR8706916A (pt) | 1986-12-19 | 1987-12-18 | Oxido cerico e seu processo de obtencao |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4859432A (pt) |
| EP (1) | EP0275733B1 (pt) |
| JP (1) | JPH0764559B2 (pt) |
| KR (1) | KR910010129B1 (pt) |
| AT (1) | ATE67746T1 (pt) |
| AU (1) | AU600061B2 (pt) |
| BR (1) | BR8706916A (pt) |
| CA (1) | CA1323359C (pt) |
| DE (1) | DE3773366D1 (pt) |
| ES (1) | ES2025191B3 (pt) |
| FR (1) | FR2608583B1 (pt) |
| GR (1) | GR3002816T3 (pt) |
Families Citing this family (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2596381B1 (fr) * | 1986-03-26 | 1988-05-27 | Rhone Poulenc Chimie | Oxydes ceriques a nouvelles caracteristiques morphologiques et leur procede d'obtention |
| FR2616769B1 (fr) * | 1987-06-17 | 1990-11-30 | Rhone Poulenc Chimie | Procede d'obtention d'un oxyde de terre rare et produit obtenu |
| FR2617153B1 (fr) * | 1987-06-26 | 1991-04-05 | Rhone Poulenc Chimie | Procede d'obtention d'un oxyde cerique et oxyde cerique a nouvelles caracteristiques morphologiques |
| FR2617154B1 (fr) * | 1987-06-29 | 1990-11-30 | Rhone Poulenc Chimie | Procede d'obtention d'oxyde cerique et oxyde cerique a nouvelles caracteristiques morphologiques |
| DE3864932D1 (de) * | 1987-06-29 | 1991-10-24 | Rhone Poulenc Chimie | Verfahren zur gewinnung eines ceriumoxids. |
| FR2621576B1 (fr) * | 1987-10-09 | 1990-01-05 | Rhone Poulenc Chimie | Dispersion colloidale d'un compose de cerium iv en milieu aqueux et son procede de preparation |
| FR2623793B1 (fr) * | 1987-11-30 | 1991-06-07 | Rhone Poulenc Chimie | Procede de preparation de granules a base d'oxyde de titane, de zirconium, ou de cerium et produits ainsi obtenus |
| FR2640611A1 (fr) * | 1988-12-16 | 1990-06-22 | Rhone Poulenc Chimie | Oxyde de terre rare a nouvelles caracteristiques morphologiques et son procede d'obtention |
| FR2640954B1 (pt) * | 1988-12-23 | 1991-03-29 | Rhone Poulenc Chimie | |
| US5279789A (en) * | 1988-12-23 | 1994-01-18 | Rhone-Poulenc Chimie | Ceric oxide particulates having improved morphology |
| FR2695574B1 (fr) * | 1992-09-15 | 1994-11-04 | Rhone Poulenc Chimie | Composition à base d'oxyde cérique, préparation et utilisation. |
| US5389352A (en) * | 1993-07-21 | 1995-02-14 | Rodel, Inc. | Oxide particles and method for producing them |
| FR2741869B1 (fr) * | 1995-12-04 | 1998-02-06 | Rhone Poulenc Chimie | Oxyde de cerium a pores de structure lamellaire, procede de preparation et utilisation en catalyse |
| US6933417B1 (en) | 1999-11-22 | 2005-08-23 | Dow Global Technologies Inc. | Process for vinyl chloride manufacture from ethane and ethylene with partial CHl recovery from reactor effluent |
| US6797845B1 (en) | 1999-11-22 | 2004-09-28 | Dow Global Technologies Inc. | Process for vinyl chloride manufacture from ethane and ethylene with immediate HCl recovery from reactor effluent |
| US6680415B1 (en) * | 1999-11-22 | 2004-01-20 | Dow Global Technologies Inc. | Oxyhalogenation process using catalyst having porous rare earth halide support |
| US6909024B1 (en) | 1999-11-22 | 2005-06-21 | The Dow Chemical Company | Process for the conversion of ethylene to vinyl chloride and novel catalyst compositions useful for such process |
| US6984763B2 (en) * | 2001-05-23 | 2006-01-10 | Dow Global Technologies Inc. | Oxidative halogenation and optional dehydrogenation of c3+hydrocarbons |
| US20040152929A1 (en) * | 2002-05-08 | 2004-08-05 | Clarke William D | Process for vinyl chloride manufacture from ethane and ethylene with air feed and alternative hcl processing methods |
| US6863825B2 (en) | 2003-01-29 | 2005-03-08 | Union Oil Company Of California | Process for removing arsenic from aqueous streams |
| US7094383B2 (en) * | 2004-12-14 | 2006-08-22 | Ctci Foundation | Method for preparing pure, thermally stable and high surface area ceria |
| KR100725699B1 (ko) * | 2005-09-02 | 2007-06-07 | 주식회사 엘지화학 | 일액형 ｃｍｐ 슬러리용 산화 세륨 분말, 그 제조방법,이를 포함하는 일액형 ｃｍｐ 슬러리 조성물, 및 상기슬러리를 사용하는 얕은 트랜치 소자 분리방법 |
| WO2008002323A2 (en) * | 2005-12-23 | 2008-01-03 | Eastman Kodak Company | Production of cerium containing metal oxide grains |
| JP4789794B2 (ja) * | 2005-12-28 | 2011-10-12 | 第一稀元素化学工業株式会社 | セリウム・ジルコニウム複合酸化物及びその製造方法 |
| EP2011765A4 (en) * | 2006-04-27 | 2010-07-28 | Asahi Glass Co Ltd | FINE OXIDE CRYSTAL PARTICLES AND POLISHER PENSION THEREWITH |
| US8066874B2 (en) | 2006-12-28 | 2011-11-29 | Molycorp Minerals, Llc | Apparatus for treating a flow of an aqueous solution containing arsenic |
| US8252087B2 (en) | 2007-10-31 | 2012-08-28 | Molycorp Minerals, Llc | Process and apparatus for treating a gas containing a contaminant |
| US8349764B2 (en) | 2007-10-31 | 2013-01-08 | Molycorp Minerals, Llc | Composition for treating a fluid |
| US8716165B2 (en) * | 2008-04-30 | 2014-05-06 | Corning Incorporated | Catalysts on substrates and methods for providing the same |
| US9233863B2 (en) | 2011-04-13 | 2016-01-12 | Molycorp Minerals, Llc | Rare earth removal of hydrated and hydroxyl species |
| CN103708525B (zh) * | 2013-11-29 | 2015-07-15 | 南昌大学 | 高堆密度细颗粒低氯根稀土碳酸盐及氧化物的生产方法 |
| RU2664905C2 (ru) | 2013-12-30 | 2018-08-23 | Джонсон Мэтти Паблик Лимитед Компани | Способы селективного каталитического восстановления с использованием легированных оксидов церия(iv) |
| EP3113859A4 (en) | 2014-03-07 | 2017-10-04 | Secure Natural Resources LLC | Cerium (iv) oxide with exceptional arsenic removal properties |
| EP3020689A1 (en) * | 2014-11-12 | 2016-05-18 | Rhodia Operations | Cerium oxide particles and method for production thereof |
| US20190151821A1 (en) * | 2016-05-16 | 2019-05-23 | Hitachi Chemical Company, Ltd. | Adsorbent, method for removing carbon dioxide, device for removing carbon dioxide, and system for removing carbon dioxide |
| EP3459628A4 (en) * | 2016-05-16 | 2020-01-29 | Hitachi Chemical Company, Ltd. | ADSORPTION AGENT, METHOD FOR REMOVING CARBON DIOXIDE, CARBON DIOXIDE REMOVAL AND AIR CONDITIONING |
| CN108128793B (zh) * | 2017-12-29 | 2020-02-04 | 江门市科恒实业股份有限公司 | 一种高纯度高热稳定大比表面积氧化铈的制备方法 |
| KR102126781B1 (ko) * | 2019-01-16 | 2020-06-26 | 한국과학기술원 | 메조 다공성 구조를 갖는 과산화수소 검출용 산화세륨, 이의 제조방법 및 이를 포함하는 과산화수소 검출용 바이오센서 |
| KR102261151B1 (ko) * | 2020-02-27 | 2021-06-07 | 비드오리진(주) | 표면 돌기가 형성된 구형 무기 입자 및 그 제조 방법 |
| CN114368773B (zh) * | 2021-12-09 | 2023-06-02 | 江西师范大学 | 一种用两步法制备二氧化铈纳米粒子的方法 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU38182A1 (pt) * | ||||
| CA597180A (en) * | 1960-05-03 | Krumholz Pawel | Separating rare earths by fractional precipitation of their hydroxides or basic salts | |
| FR1232937A (fr) * | 1957-09-02 | 1960-10-12 | Perfectionnements apportés aux procédés de séparation des terres rares par précipitation fractionnée de leurs hydroxydes ou sels basiques | |
| US3024199A (en) * | 1958-09-02 | 1962-03-06 | Du Pont | Stable aquasols of hydrous rare earth oxides and their preparation |
| FR1442597A (fr) * | 1965-05-20 | 1966-06-17 | Piesteritz Stickstoff | Procédé pour séparer le cérium d'autres terres rares |
| AT339253B (de) * | 1975-07-25 | 1977-10-10 | Treibacher Chemische Werke Ag | Verfahren zur herstellung eines reinen ceroxids |
| WO1979000248A1 (en) * | 1977-11-01 | 1979-05-17 | Atomic Energy Authority Uk | Production of dispersions |
| US4140771A (en) * | 1978-02-24 | 1979-02-20 | The United States Of America As Represented By The Department Of Energy | Process for preparing active oxide powders |
| US4545923A (en) * | 1982-06-11 | 1985-10-08 | Rhone-Poulenc Inc. | Process for preparing colloidal ceric oxide and complexes thereof with free organic acids |
| US4647401A (en) * | 1983-01-24 | 1987-03-03 | Rhone Poulenc Inc. | Process for preparing colloidal ceric oxide and complexes thereof with free organic acids |
| FR2559755A1 (fr) * | 1984-02-20 | 1985-08-23 | Rhone Poulenc Spec Chim | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
| FR2559754A1 (fr) * | 1984-02-20 | 1985-08-23 | Rhone Poulenc Spec Chim | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
| FR2583737B1 (fr) * | 1985-06-20 | 1987-08-14 | Rhone Poulenc Spec Chim | Nouveau compose de cerium iv et son procede de preparation. |
| JPS6269282A (ja) * | 1985-09-24 | 1987-03-30 | Mitsui Eng & Shipbuild Co Ltd | 音響ホログラフイにおける計測デ−タ処理方法 |
| FR2596381B1 (fr) * | 1986-03-26 | 1988-05-27 | Rhone Poulenc Chimie | Oxydes ceriques a nouvelles caracteristiques morphologiques et leur procede d'obtention |
| FR2596380B1 (fr) * | 1986-03-26 | 1991-09-27 | Rhone Poulenc Chimie | Nouveau compose de cerium iv et son procede de preparation |
-
1986
- 1986-12-19 FR FR8617805A patent/FR2608583B1/fr not_active Expired - Lifetime
-
1987
- 1987-12-09 ES ES87402794T patent/ES2025191B3/es not_active Expired - Lifetime
- 1987-12-09 DE DE8787402794T patent/DE3773366D1/de not_active Expired - Fee Related
- 1987-12-09 EP EP87402794A patent/EP0275733B1/fr not_active Expired - Lifetime
- 1987-12-09 AT AT87402794T patent/ATE67746T1/de not_active IP Right Cessation
- 1987-12-18 BR BR8706916A patent/BR8706916A/pt unknown
- 1987-12-18 CA CA000554822A patent/CA1323359C/fr not_active Expired - Fee Related
- 1987-12-18 KR KR1019870014520A patent/KR910010129B1/ko not_active IP Right Cessation
- 1987-12-18 AU AU82803/87A patent/AU600061B2/en not_active Ceased
- 1987-12-18 JP JP62319118A patent/JPH0764559B2/ja not_active Expired - Fee Related
- 1987-12-21 US US07/135,380 patent/US4859432A/en not_active Expired - Lifetime
-
1991
- 1991-09-27 GR GR91401451T patent/GR3002816T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA1323359C (fr) | 1993-10-19 |
| KR910010129B1 (ko) | 1991-12-17 |
| ATE67746T1 (de) | 1991-10-15 |
| FR2608583B1 (fr) | 1990-12-07 |
| FR2608583A1 (fr) | 1988-06-24 |
| KR880007369A (ko) | 1988-08-27 |
| AU8280387A (en) | 1988-06-23 |
| ES2025191B3 (es) | 1992-03-16 |
| US4859432A (en) | 1989-08-22 |
| EP0275733A1 (fr) | 1988-07-27 |
| JPS63239109A (ja) | 1988-10-05 |
| AU600061B2 (en) | 1990-08-02 |
| EP0275733B1 (fr) | 1991-09-25 |
| JPH0764559B2 (ja) | 1995-07-12 |
| GR3002816T3 (en) | 1993-01-25 |
| DE3773366D1 (de) | 1991-10-31 |
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