FR2696109B1 - Catalyseur d'oxydation et procédé d'oxydation partielle du méthane. - Google Patents
Catalyseur d'oxydation et procédé d'oxydation partielle du méthane.Info
- Publication number
- FR2696109B1 FR2696109B1 FR9211638A FR9211638A FR2696109B1 FR 2696109 B1 FR2696109 B1 FR 2696109B1 FR 9211638 A FR9211638 A FR 9211638A FR 9211638 A FR9211638 A FR 9211638A FR 2696109 B1 FR2696109 B1 FR 2696109B1
- Authority
- FR
- France
- Prior art keywords
- oxidation
- partial methane
- catalyst
- oxidation catalyst
- oxidation process
- 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 - Fee Related
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title 2
- 230000003647 oxidation Effects 0.000 title 2
- 238000007254 oxidation reaction Methods 0.000 title 2
- 239000003054 catalyst Substances 0.000 title 1
- 238000000034 method Methods 0.000 title 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
- C01B3/40—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts characterised by the catalyst
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
- C01B3/386—Catalytic partial combustion
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1047—Group VIII metal catalysts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1047—Group VIII metal catalysts
- C01B2203/1052—Nickel or cobalt catalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S502/00—Catalyst, solid sorbent, or support therefor: product or process of making
- Y10S502/525—Perovskite
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9211638A FR2696109B1 (fr) | 1992-09-28 | 1992-09-28 | Catalyseur d'oxydation et procédé d'oxydation partielle du méthane. |
| NO933420A NO301055B1 (no) | 1992-09-28 | 1993-09-24 | Katalysator for partiell oksydasjon av metan, samt anvendelse av katalysatoren |
| US08/127,616 US5447705A (en) | 1992-09-28 | 1993-09-28 | Oxidation catalyst and process for the partial oxidation of methane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9211638A FR2696109B1 (fr) | 1992-09-28 | 1992-09-28 | Catalyseur d'oxydation et procédé d'oxydation partielle du méthane. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2696109A1 FR2696109A1 (fr) | 1994-04-01 |
| FR2696109B1 true FR2696109B1 (fr) | 1994-11-04 |
Family
ID=9434034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9211638A Expired - Fee Related FR2696109B1 (fr) | 1992-09-28 | 1992-09-28 | Catalyseur d'oxydation et procédé d'oxydation partielle du méthane. |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5447705A (fr) |
| FR (1) | FR2696109B1 (fr) |
| NO (1) | NO301055B1 (fr) |
Families Citing this family (68)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR1002714B (el) * | 1995-05-03 | 1997-06-10 | Zhang Zhaolong | Καταλυτες για τη μερικη οξειδωση ελαφρων υδρογονανθρακων προς αεριο συνθεσης. |
| US6238816B1 (en) | 1996-12-30 | 2001-05-29 | Technology Management, Inc. | Method for steam reforming hydrocarbons using a sulfur-tolerant catalyst |
| JP4092441B2 (ja) * | 1997-02-24 | 2008-05-28 | 日産自動車株式会社 | 排ガス浄化用触媒 |
| KR100326747B1 (ko) * | 1998-03-09 | 2002-03-13 | 하나와 요시카즈 | 산소 과잉 배기 가스의 정화 장치 |
| US6143928A (en) * | 1998-08-10 | 2000-11-07 | Saudi Basic Industries Corporation | Catalysts for low temperature selective oxidation of propylene, methods of making and using the same |
| US6319872B1 (en) | 1998-08-20 | 2001-11-20 | Conoco Inc | Fischer-Tropsch processes using catalysts on mesoporous supports |
| US6197719B1 (en) * | 1999-02-12 | 2001-03-06 | Council Of Scientific And Industrial Research | Process for the activation of perovskite type oxide |
| CA2363035C (fr) | 1999-02-22 | 2007-09-04 | Symyx Technologies, Inc. | Compositions contenant du nickel et utilisation de ces compositions comme catalyseur pour la deshydrogenation oxydative des alcanes |
| NL1011627C2 (nl) * | 1999-03-22 | 2000-09-27 | Plug Power Inc | Werkwijze voor het selectief oxideren van koolwaterstoffen. |
| US6296687B2 (en) * | 1999-04-30 | 2001-10-02 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Natural Resources | Hydrogen permeation through mixed protonic-electronic conducting materials |
| GB9917583D0 (en) * | 1999-07-28 | 1999-09-29 | Marconi Electronic Syst Ltd | Hydrocarbon fuel processor catalyst |
| US6409940B1 (en) | 1999-10-18 | 2002-06-25 | Conoco Inc. | Nickel-rhodium based catalysts and process for preparing synthesis gas |
| AU4155301A (en) * | 2000-02-18 | 2001-08-27 | Conoco Inc. | Chromium-rare earth based catalysts and process for converting hydrocarbons to synthesis gas |
| ATE368001T1 (de) * | 2000-09-05 | 2007-08-15 | Conocophillips Co | Verfahren zur herstellung von synthesegas mit lanthanid-dotierter rhodiumkatalysatoren |
| US7641875B1 (en) * | 2000-11-15 | 2010-01-05 | Catalytic Solutions, Inc. | Mixed-phase ceramic oxide three-way catalyst formulations and methods for preparing the catalysts |
| WO2002066403A1 (fr) * | 2001-02-16 | 2002-08-29 | Conoco Inc. | Catalyseurs sur support de rhodium-oxyde de type spinelle et procede de production de gaz de synthese |
| EP1233002B1 (fr) * | 2001-02-20 | 2009-08-05 | National Institute for Materials Science | Méthode de production de perovskite de ruthenium |
| US20020179887A1 (en) * | 2001-05-01 | 2002-12-05 | Yongxian Zeng | Supported perovskite-type oxides and methods for preparation thereof |
| WO2002098557A1 (fr) * | 2001-06-04 | 2002-12-12 | Conoco Inc. | Catalyseurs a base de lanthanides de rodium et procedes de production d'un gaz de synthese |
| WO2003086627A1 (fr) * | 2002-03-29 | 2003-10-23 | Kyushu Electric Power Co., Inc. | Composition de catalyseur de modification |
| US7507690B2 (en) * | 2002-04-30 | 2009-03-24 | Uchicago Argonne, Llc. | Autothermal reforming catalyst having perovskite structure |
| US7132093B2 (en) * | 2002-06-05 | 2006-11-07 | UNIVERSITé LAVAL | Mesoporous mixed oxide materials as a new class of SO2 resistant catalysts for hydrocarbon oxidation |
| JP4311918B2 (ja) * | 2002-07-09 | 2009-08-12 | ダイハツ工業株式会社 | ペロブスカイト型複合酸化物の製造方法 |
| JP2004041868A (ja) * | 2002-07-09 | 2004-02-12 | Daihatsu Motor Co Ltd | 排ガス浄化用触媒 |
| JP2004041867A (ja) * | 2002-07-09 | 2004-02-12 | Daihatsu Motor Co Ltd | 排ガス浄化用触媒 |
| AU2003244203A1 (en) | 2002-07-09 | 2004-01-23 | Daihatsu Motor Co., Ltd. | Method for producing catalyst for clarifying exhaust gas |
| US20040024071A1 (en) * | 2002-08-01 | 2004-02-05 | Meier Paul F. | Perovskite compositions and method of making and process of using such compositions |
| AU2003262664A1 (en) * | 2002-08-14 | 2004-03-03 | Atmospheric Sensors, Llc | Exhaust gas oxygen sensor |
| EP1419814A1 (fr) * | 2002-11-15 | 2004-05-19 | L'AIR LIQUIDE, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des | Catalyseur de type perovskite pour l'oxydation partielle de gaz naturel |
| US7230035B2 (en) * | 2002-12-30 | 2007-06-12 | Conocophillips Company | Catalysts for the conversion of methane to synthesis gas |
| US20050081444A1 (en) * | 2003-10-17 | 2005-04-21 | General Electric Company | Catalytic partial oxidation processor with heat exchanger for converting hydrocarbon fuels to syngas for use in fuel cells and method |
| US20050089465A1 (en) * | 2003-10-22 | 2005-04-28 | General Electric Company | Thermally Managed Catalytic Partial Oxidation Of Hydrocarbon Fuels To Form Syngas For Use In Fuel Cells |
| US20050089464A1 (en) * | 2003-10-22 | 2005-04-28 | General Electric Company | Production Of Syngas For Fuel Cells Using Multiple Catalyst Configuration |
| US7347887B2 (en) | 2003-12-22 | 2008-03-25 | The Boc Group, Inc. | Oxygen sorbent compositions and methods of using same |
| JP4204487B2 (ja) * | 2004-01-21 | 2009-01-07 | 本田技研工業株式会社 | 排ガス浄化触媒及びその製造方法、並びに車用排ガス浄化触媒装置 |
| EP1728766A4 (fr) * | 2004-03-22 | 2009-04-22 | Daihatsu Motor Co Ltd | Oxyde composite de type perovskite, composition catalytique et procede de fabrication d'un oxyde composite de type perovskite |
| WO2006063230A1 (fr) * | 2004-12-09 | 2006-06-15 | Hrd Corp. | Catalyseur et procede de transformation d'hydrocarbures paraffiniques de faible poids moleculaire en alcenes |
| RU2397810C2 (ru) * | 2006-03-10 | 2010-08-27 | Умикоре Аг Унд Ко. Кг | Катализатор и способ разложения монооксида диазота и способ и устройство для получения азотной кислоты |
| US20080016768A1 (en) | 2006-07-18 | 2008-01-24 | Togna Keith A | Chemically-modified mixed fuels, methods of production and used thereof |
| US7879754B2 (en) * | 2008-04-21 | 2011-02-01 | Battelle Memorial Institute | Sulfur-tolerant catalyst systems |
| US7964167B2 (en) * | 2008-10-03 | 2011-06-21 | GM Global Technology Operations LLC | Method and architecture for oxidizing nitric oxide in exhaust gas from hydrocarbon fuel source with a fuel lean combustion mixture |
| US8268274B2 (en) * | 2008-10-03 | 2012-09-18 | GM Global Technology Operations LLC | Catalyst combinations and methods and systems for oxidizing nitric oxide in a gas stream |
| EA019045B1 (ru) | 2009-03-16 | 2013-12-30 | Сауди Бейсик Индастриз Корпорейшн | Катализатор никель/оксид лантана для получения синтез-газа |
| US8513155B2 (en) * | 2009-03-16 | 2013-08-20 | GM Global Technology Operations LLC | Perovskite-type compounds for use in lean NOx traps |
| US20150274981A1 (en) * | 2010-09-22 | 2015-10-01 | Skyworks Solutions, Inc. | Dual function lanthanide coatings |
| US8414798B2 (en) * | 2010-11-02 | 2013-04-09 | Uop Llc | Processes and systems for producing syngas from methane |
| SG182122A1 (en) | 2010-12-23 | 2012-07-30 | Agency Science Tech & Res | A perovskite-type strontium titanate |
| KR20120080375A (ko) * | 2011-01-07 | 2012-07-17 | 삼성전자주식회사 | 연료전지용 양극 소재, 이를 포함하는 연료전지용 양극과 그 양극의 제조방법, 및 고체산화물 연료전지 |
| FR2984182B1 (fr) * | 2011-12-16 | 2014-09-05 | Saint Gobain Ct Recherches | Systeme catalytique de traitement de gaz |
| WO2013135663A1 (fr) | 2012-03-13 | 2013-09-19 | Bayer Intellectual Property Gmbh | Procédé pour réduire du dioxyde de carbone à haute température sur des catalyseurs à base d'oxyde métallique mixte comprenant des métaux précieux |
| WO2013135707A1 (fr) | 2012-03-13 | 2013-09-19 | Bayer Intellectual Property Gmbh | Procédé pour produire un mélange gazeux contenant du monoxyde de carbone à des températures élevées sur des catalyseurs à base d'oxyde de mischmétal renfermant des métaux nobles |
| WO2014188278A2 (fr) | 2013-05-09 | 2014-11-27 | Sabic Global Technologies B.V. | Catalyseurs supportés à base de minéraux argileux |
| KR101796495B1 (ko) | 2013-11-06 | 2017-11-10 | 와트 퓨얼 셀 코퍼레이션 | 기체 연료 촉매 부분산화 개질 장치 및 촉매 부분산화 개질 방법 |
| CN105705227B (zh) | 2013-11-06 | 2018-09-25 | 瓦特燃料电池公司 | 液体燃料催化部分氧化重整器和燃料电池系统、以及产生电力的方法 |
| AU2014346844B2 (en) | 2013-11-06 | 2017-06-15 | Watt Fuel Cell Corp. | Chemical reactor with manifold for management of a flow of gaseous reaction medium thereto |
| CA2929680C (fr) | 2013-11-06 | 2019-03-26 | Watt Fuel Cell Corp. | Reformeurs a cpox de combustible liquide et procedes de reformage a cpox |
| US9627701B2 (en) | 2013-11-06 | 2017-04-18 | Watt Fuel Cell Corp. | Integrated gaseous fuel CPOX reformer and fuel cell systems, and methods of producing electricity |
| KR101925826B1 (ko) | 2013-11-06 | 2018-12-06 | 와트 퓨얼 셀 코퍼레이션 | 구조적 구성요소로서 페로브스카이트를 가지는 개질장치 |
| WO2016011240A1 (fr) | 2014-07-17 | 2016-01-21 | Sabic Global Technologies B.V. | Utilisation de catalyseurs d'olivine pour reformage de méthane à l'aide de dioxyde de carbone |
| EP3256249A1 (fr) | 2015-03-20 | 2017-12-20 | SABIC Global Technologies B.V. | Utilisation de la phase olivine nickel-manganèse et de la phase spinelle nickel-manganèse à titre de catalyseurs métalliques en vrac pour le reformage par le dioxyde de carbone du méthane |
| US9662639B2 (en) * | 2015-05-11 | 2017-05-30 | University Of Wyoming | Catalytic effects of oxygen carrier based chemical-looping reforming of CH4 with CO2 |
| US10946362B1 (en) | 2017-02-24 | 2021-03-16 | University Of South Florida | Perovskite oxides for thermochemical conversion of carbon dioxide |
| JP6759272B2 (ja) * | 2018-04-24 | 2020-09-23 | 株式会社豊田中央研究所 | 酸素貯蔵材料及びその製造方法 |
| JP6670880B2 (ja) * | 2018-04-24 | 2020-03-25 | 株式会社豊田中央研究所 | 酸素貯蔵材料及びその製造方法 |
| KR102716302B1 (ko) | 2019-08-29 | 2024-10-11 | 와트 퓨얼 셀 코퍼레이션 | 기상 발열 반응의 개시를 위한 점화기를 갖는 다중-관형 화학 반응기 |
| CN115779925B (zh) * | 2021-09-10 | 2024-03-26 | 中国石油化工股份有限公司 | 生物质原料制乙二醇催化剂组合物及其制备方法和应用 |
| CN115845868B (zh) * | 2022-11-17 | 2024-12-03 | 华中师范大学 | 一种三维有序大孔高熵钙钛矿整体式催化器件及其制备方法和应用 |
| US12341226B1 (en) | 2024-08-07 | 2025-06-24 | Watt Fuel Cell Corp. | Integrated CPOX/stream reformer and fuel cell system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1066686A (fr) * | 1974-04-25 | 1979-11-20 | Alan Lauder | Compositions catalytiques d'oxydes metalliques |
| EP0084273A3 (fr) * | 1982-01-04 | 1984-05-23 | The Standard Oil Company | Procédé pour la production de gaz de synthèse |
| JPS58156350A (ja) * | 1982-03-12 | 1983-09-17 | Matsushita Electric Ind Co Ltd | 排ガス浄化装置 |
| US4812300A (en) * | 1987-07-13 | 1989-03-14 | Sri-International | Selective perovskite catalysts to oxidize ammonia to nitric oxide |
| DE3741888A1 (de) * | 1987-12-10 | 1989-06-22 | Asea Brown Boveri | Katalysator und verfahren zu seiner herstellung |
| GB2239406B (en) * | 1989-08-25 | 1993-10-13 | Gas Res Inst | Catalytic gas conversion method |
| JPH03161052A (ja) * | 1989-11-17 | 1991-07-11 | Matsushita Electric Ind Co Ltd | 排気ガス浄化触媒体およびその製造方法 |
| CN1022542C (zh) * | 1990-07-26 | 1993-10-27 | 北京大学 | 钙钛矿型稀土复合氧化物燃烧催化剂 |
| US5149516A (en) * | 1990-10-15 | 1992-09-22 | Mobil Oil Corp. | Partial oxidation of methane over perovskite catalyst |
-
1992
- 1992-09-28 FR FR9211638A patent/FR2696109B1/fr not_active Expired - Fee Related
-
1993
- 1993-09-24 NO NO933420A patent/NO301055B1/no not_active IP Right Cessation
- 1993-09-28 US US08/127,616 patent/US5447705A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2696109A1 (fr) | 1994-04-01 |
| NO933420L (no) | 1994-03-29 |
| NO301055B1 (no) | 1997-09-08 |
| NO933420D0 (no) | 1993-09-24 |
| US5447705A (en) | 1995-09-05 |
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