AR247492A1 - Reduccion catalitica de nox que usa metano en presencia de oxigeno - Google Patents
Reduccion catalitica de nox que usa metano en presencia de oxigenoInfo
- Publication number
- AR247492A1 AR247492A1 AR92322868A AR32286892A AR247492A1 AR 247492 A1 AR247492 A1 AR 247492A1 AR 92322868 A AR92322868 A AR 92322868A AR 32286892 A AR32286892 A AR 32286892A AR 247492 A1 AR247492 A1 AR 247492A1
- Authority
- AR
- Argentina
- Prior art keywords
- nitrogen
- oxides
- methane
- oxygen
- nox
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/208—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1025—Rhodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/2073—Manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20746—Cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20753—Nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20784—Chromium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
UN PROCEDIMIENTO PARA DESTRUIR OXIDOS DE NITROGENO EN PRODUCTOS DE LA COMBUSTION QUE COMPRENDE HACER REACCIONAR LOS OXIDOS DE NITROGENO, METANO Y OXIGENO EN PRESENCIA DE UNA ZEOLITA CRISTALINA CON UNA RELACION DE SILICIO A ALUMINIO MAYOR O IGUAL A 2, 5 EN DONDE LA ZEOLITA SE INTERCAMBIA CON UN CATION SELECCIONADO DEL GRUPO COMPUESTO POR COBALTO, NIQUEL, HIERRO, CROMO, RODIO Y MANGANESO BAJO CONDICIONES SUFICIENTES PARA CONVERTIR LOS OXIDOS DE NITROGENO A NITROGENO GASEOSO, AGUA Y OXIDOS DE CARBONO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/739,273 US5149512A (en) | 1991-08-01 | 1991-08-01 | Catalytic reduction of NOx using methane in the presence of oxygen |
Publications (1)
Publication Number | Publication Date |
---|---|
AR247492A1 true AR247492A1 (es) | 1995-01-31 |
Family
ID=24971567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AR92322868A AR247492A1 (es) | 1991-08-01 | 1992-07-31 | Reduccion catalitica de nox que usa metano en presencia de oxigeno |
Country Status (15)
Country | Link |
---|---|
US (1) | US5149512A (es) |
EP (1) | EP0525701A1 (es) |
JP (1) | JPH0798133B2 (es) |
KR (1) | KR950008627B1 (es) |
CN (1) | CN1070352A (es) |
AR (1) | AR247492A1 (es) |
AU (1) | AU645432B2 (es) |
BR (1) | BR9202908A (es) |
CA (1) | CA2074687A1 (es) |
FI (1) | FI923477A (es) |
MX (1) | MX9204495A (es) |
NZ (1) | NZ243726A (es) |
PT (1) | PT100750A (es) |
TW (1) | TW225481B (es) |
ZA (1) | ZA925779B (es) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU634005B2 (en) * | 1989-12-21 | 1993-02-11 | Tosoh Corporation | Catalyst for and method of purifying oxygen-excess exhaust gas |
US5271913A (en) * | 1989-12-28 | 1993-12-21 | Mitsubishi Jukogyo Kabushiki Kaisha | Denitration catalyst for high-temperature exhaust gas |
CA2046951A1 (en) * | 1990-07-19 | 1992-01-20 | Akinori Eshita | Catalyst for purifying exhaust gas and method of using same |
US5407651A (en) * | 1991-02-15 | 1995-04-18 | Tosoh Corporation | Catalyst for and method of purifying exhaust gas |
US5451385A (en) * | 1991-08-01 | 1995-09-19 | Air Products And Chemicals, Inc. | Control of exhaust emissions from methane-fueled internal combustion engines |
US5260043A (en) * | 1991-08-01 | 1993-11-09 | Air Products And Chemicals, Inc. | Catalytic reduction of NOx and carbon monoxide using methane in the presence of oxygen |
GB9223170D0 (en) * | 1992-11-05 | 1992-12-16 | British Petroleum Co Plc | Process for preparing carboxylic acids |
US5364606A (en) * | 1993-03-01 | 1994-11-15 | General Electric Company | NOx reduction through the use of methane |
US5401372A (en) * | 1993-04-26 | 1995-03-28 | Ceramatec, Inc. | Electrochemical catalytic reduction cell for the reduction of NOx in an O2 -containing exhaust emission |
US5869013A (en) * | 1993-11-04 | 1999-02-09 | Osaka Gas Company Limited | Process and catalyst for reducing Nox in exhaust combustion gases |
EP0652040B1 (en) * | 1993-11-04 | 2000-04-05 | ENITECNOLOGIE S.p.a. | Process and catalyst for reducing NOx in combustion exhaust gases |
US5354544A (en) * | 1993-12-27 | 1994-10-11 | Ford Motor Company | Selective reduction of nitric oxide |
DE69519243T2 (de) * | 1994-02-15 | 2001-03-08 | Tokyo Gas Co. Ltd., Tokio/Tokyo | Verfahren und Katalysator zur Reinigung von NOx-enthaltenden Abgasen |
JPH11221469A (ja) * | 1995-03-17 | 1999-08-17 | Osaka Gas Co Ltd | 窒素酸化物還元用触媒及び排ガス中の窒素酸化物の還元方法 |
CA2141734C (en) * | 1995-01-25 | 2000-06-06 | Raj Narain Pandey | Selective catalytic reduction of nitrogen oxides |
EP0739651B1 (en) * | 1995-04-17 | 2001-08-16 | ENITECNOLOGIE S.p.a. | Nitrogen oxides reduction catalyst and process for reducing nitrogen oxides in exhaust gas |
US5743929A (en) * | 1995-08-23 | 1998-04-28 | The Boc Group, Inc. | Process for the production of high purity carbon dioxide |
EP0766992B1 (en) * | 1995-10-06 | 2003-07-30 | ENITECNOLOGIE S.p.a. | Nitrogen oxides reduction catalyst and process for reducing nitrogen oxides in exhaust gas |
FR2754468B1 (fr) * | 1996-10-10 | 2001-12-14 | Gaz De France | Catalyseur, en particulier de reduction des nox, et procede de reduction des nox |
KR100239462B1 (ko) * | 1996-12-28 | 2000-01-15 | 구자홍 | 브이에스비(vsb) 디지탈 티브이 |
FR2773087B1 (fr) * | 1997-12-26 | 2000-02-11 | Inst Francais Du Petrole | Catalyseurs de reduction des oxydes d'azote dans un milieu oxydant, preparation et utilisation |
NL1008746C2 (nl) * | 1998-03-30 | 1999-10-01 | Stichting Energie | Werkwijze voor het omzetten van distikstofoxide. |
CN1123375C (zh) * | 1998-10-21 | 2003-10-08 | 中国科学院大连化学物理研究所 | 一种富氧条件下氢部分选择还原一氧化氮的方法 |
NL1013862C2 (nl) * | 1999-09-06 | 2001-03-08 | Stichting Energie | Reductie van N#2O emissies. |
JP4573320B2 (ja) * | 2000-09-08 | 2010-11-04 | 昭和電工株式会社 | 亜酸化窒素分解触媒、その製造方法及び亜酸化窒素の分解方法 |
NL1017245C2 (nl) * | 2001-01-31 | 2002-08-01 | Stichting Energie | Werkwijze voor het gelijktijdig verwijderen van stikstofoxiden en lachgas uit een stikstofoxiden en lachgas bevattende gasstroom. |
US7137382B2 (en) * | 2002-11-01 | 2006-11-21 | Visteon Global Technologies, Inc. | Optimal wide open throttle air/fuel ratio control |
EP1536111B1 (en) * | 2003-11-26 | 2006-08-02 | Ford Global Technologies, LLC | Apparatus and method for removal of by-products from exhaust gases of a combustion engine |
NL1026207C2 (nl) * | 2004-05-17 | 2005-11-21 | Stichting Energie | Werkwijze voor de decompositie van N2O, katalysator daarvoor en bereiding van deze katalysator. |
US7488462B2 (en) * | 2005-04-26 | 2009-02-10 | The Ohio State University | Multi-stage catalyst systems and uses thereof |
US7939039B2 (en) * | 2007-09-11 | 2011-05-10 | GM Global Technology Operations LLC | Bimetallic catalyst for NOx reduction in engine exhaust |
DE102011013271A1 (de) * | 2011-03-07 | 2012-09-13 | L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Verfahren und Anlage zur Reduktion von Stickoxidemissionen bei der Dampfreformierung |
JP6134552B2 (ja) * | 2012-03-30 | 2017-05-24 | 日立造船株式会社 | 燃焼排ガスの浄化方法、および脱硝触媒 |
CN103752352A (zh) * | 2014-01-02 | 2014-04-30 | 上海大学 | 钴锰双交换分子筛脱硝催化剂的制备方法 |
CN104841474A (zh) * | 2015-03-19 | 2015-08-19 | 碗海鹰 | Scr催化剂及其制备方法 |
US9757691B2 (en) * | 2015-11-06 | 2017-09-12 | Paccar Inc | High efficiency and durability selective catalytic reduction catalyst |
US10188986B2 (en) | 2015-11-06 | 2019-01-29 | Paccar Inc | Electrochemical reductant generation while dosing DEF |
US10058819B2 (en) | 2015-11-06 | 2018-08-28 | Paccar Inc | Thermally integrated compact aftertreatment system |
US9764287B2 (en) | 2015-11-06 | 2017-09-19 | Paccar Inc | Binary catalyst based selective catalytic reduction filter |
GB201608643D0 (en) * | 2016-05-17 | 2016-06-29 | Thermo Fisher Scient Bremen | Elemental analysis system and method |
US10835866B2 (en) | 2017-06-02 | 2020-11-17 | Paccar Inc | 4-way hybrid binary catalysts, methods and uses thereof |
US10675586B2 (en) | 2017-06-02 | 2020-06-09 | Paccar Inc | Hybrid binary catalysts, methods and uses thereof |
CN108187732B (zh) * | 2017-12-12 | 2021-04-02 | 哈尔滨工业大学深圳研究生院 | 一种抗硫抗水的ch4-scr脱硝催化剂及其制备方法 |
DE112019001699T5 (de) * | 2018-03-30 | 2020-12-24 | Iee International Electronics & Engineering S.A. | Flexible und dehnbare Heizungen von hoher Robustheit für Kraftfahrzeuganwendungen |
US10906031B2 (en) | 2019-04-05 | 2021-02-02 | Paccar Inc | Intra-crystalline binary catalysts and uses thereof |
US11007514B2 (en) | 2019-04-05 | 2021-05-18 | Paccar Inc | Ammonia facilitated cation loading of zeolite catalysts |
US10934918B1 (en) | 2019-10-14 | 2021-03-02 | Paccar Inc | Combined urea hydrolysis and selective catalytic reduction for emissions control |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62291258A (ja) * | 1986-06-11 | 1987-12-18 | Ricoh Co Ltd | 画像読取装置 |
JPS63119850A (ja) * | 1986-11-10 | 1988-05-24 | Matsushita Electric Ind Co Ltd | 燃焼排ガス浄化用触媒 |
DE3713169A1 (de) * | 1987-04-17 | 1988-11-03 | Bayer Ag | Verfahren und vorrichtung zur reduktion von stickoxiden |
JPH0729049B2 (ja) * | 1987-04-30 | 1995-04-05 | 三菱重工業株式会社 | 燃焼排ガス中の砒素化合物除去方法 |
US4867954A (en) * | 1988-04-07 | 1989-09-19 | Uop | Catalytic reduction of nitrogen oxides |
JPH0763631B2 (ja) * | 1988-04-18 | 1995-07-12 | トヨタ自動車株式会社 | 排気ガス浄化用触媒の製造方法 |
EP0362966B1 (en) * | 1988-10-07 | 1994-01-12 | Sakai Chemical Industry Co., Ltd., | Catalysts and methods for denitrization |
JP2851444B2 (ja) * | 1991-01-29 | 1999-01-27 | 東ソー株式会社 | 排気ガス浄化方法 |
US5407651A (en) * | 1991-02-15 | 1995-04-18 | Tosoh Corporation | Catalyst for and method of purifying exhaust gas |
-
1991
- 1991-08-01 US US07/739,273 patent/US5149512A/en not_active Expired - Fee Related
-
1992
- 1992-06-16 TW TW081104710A patent/TW225481B/zh active
- 1992-07-27 CA CA002074687A patent/CA2074687A1/en not_active Abandoned
- 1992-07-27 EP EP92112806A patent/EP0525701A1/en not_active Withdrawn
- 1992-07-27 AU AU20586/92A patent/AU645432B2/en not_active Ceased
- 1992-07-27 NZ NZ243726A patent/NZ243726A/en unknown
- 1992-07-28 BR BR929202908A patent/BR9202908A/pt unknown
- 1992-07-28 JP JP4220699A patent/JPH0798133B2/ja not_active Expired - Lifetime
- 1992-07-31 KR KR1019920013740A patent/KR950008627B1/ko active IP Right Grant
- 1992-07-31 PT PT100750A patent/PT100750A/pt not_active Application Discontinuation
- 1992-07-31 AR AR92322868A patent/AR247492A1/es active
- 1992-07-31 ZA ZA925779A patent/ZA925779B/xx unknown
- 1992-07-31 MX MX9204495A patent/MX9204495A/es unknown
- 1992-07-31 FI FI923477A patent/FI923477A/fi unknown
- 1992-08-01 CN CN92108989A patent/CN1070352A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CA2074687A1 (en) | 1993-02-02 |
TW225481B (es) | 1994-06-21 |
US5149512A (en) | 1992-09-22 |
KR950008627B1 (ko) | 1995-08-03 |
ZA925779B (en) | 1994-01-31 |
PT100750A (pt) | 1993-09-30 |
MX9204495A (es) | 1993-02-01 |
KR930003955A (ko) | 1993-03-22 |
CN1070352A (zh) | 1993-03-31 |
AU2058692A (en) | 1993-02-04 |
EP0525701A1 (en) | 1993-02-03 |
AU645432B2 (en) | 1994-01-13 |
BR9202908A (pt) | 1993-03-30 |
NZ243726A (en) | 1994-10-26 |
JPH0798133B2 (ja) | 1995-10-25 |
JPH05192582A (ja) | 1993-08-03 |
FI923477A (fi) | 1993-02-02 |
FI923477A0 (fi) | 1992-07-31 |
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