ES2054957T3 - Procedimiento para la reduccion de oxidos de nitrogeno contenidos en gases de escape mediante un catalizador conteniendo zeolita. - Google Patents
Procedimiento para la reduccion de oxidos de nitrogeno contenidos en gases de escape mediante un catalizador conteniendo zeolita.Info
- Publication number
- ES2054957T3 ES2054957T3 ES89115327T ES89115327T ES2054957T3 ES 2054957 T3 ES2054957 T3 ES 2054957T3 ES 89115327 T ES89115327 T ES 89115327T ES 89115327 T ES89115327 T ES 89115327T ES 2054957 T3 ES2054957 T3 ES 2054957T3
- Authority
- ES
- Spain
- Prior art keywords
- procedure
- reduction
- nitrogen oxides
- oxides contained
- exhaust gases
- 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
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—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
-
- 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
-
- 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
-
- 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
- B01D53/9431—Processes characterised by a specific device
-
- 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
- B01D53/9495—Controlling the catalytic process
-
- 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
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- 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
- B01D2255/20761—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- 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
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
-
- 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)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
EN UN PROCEDIMIENTO, QUE UTILIZA UN CATALIZADOR CON ZEOLITAS, PARA LA REDUCCION DE OXIDOS DE NITROGENO CONTENIDOS EN GASES SALIENTES SE UTILIZA UREA COMO MEDIO REDUCTOR A AÑADIR AL GAS SALIENTE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3830045A DE3830045C2 (de) | 1988-09-03 | 1988-09-03 | Verfahren zur Reduktion von in Abgasen enthaltenen Stickoxiden mittels eines zeolithhaltigen Katalysators |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2054957T3 true ES2054957T3 (es) | 1994-08-16 |
ES2054957T5 ES2054957T5 (es) | 1997-10-16 |
Family
ID=6362271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES89115327T Expired - Lifetime ES2054957T5 (es) | 1988-09-03 | 1989-08-19 | Procedimiento para la reduccion de oxidos de nitrogeno contenidos en gases de escape mediante un catalizador conteniendo zeolita. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4946659A (es) |
EP (1) | EP0364694B2 (es) |
JP (1) | JP2931332B2 (es) |
KR (1) | KR0127757B1 (es) |
DE (2) | DE3830045C2 (es) |
ES (1) | ES2054957T5 (es) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4978514A (en) * | 1989-09-12 | 1990-12-18 | Fuel Tech, Inc. | Combined catalytic/non-catalytic process for nitrogen oxides reduction |
US5139754A (en) * | 1989-09-12 | 1992-08-18 | Fuel Tech, Inc. | Catalytic/non-catalytic combination process for nitrogen oxides reduction |
JPH07106300B2 (ja) * | 1989-12-08 | 1995-11-15 | 財団法人産業創造研究所 | 燃焼排ガス中の窒素酸化物除去法 |
DE4003515A1 (de) * | 1990-02-06 | 1991-08-08 | Bayer Ag | Verfahren zur reduktion von in abgasen enthaltenen stickoxiden |
KR100229731B1 (ko) * | 1990-07-27 | 1999-11-15 | 브룬너 하인리히 페터 울리히 | 대형 디젤엔진 |
US5240688A (en) * | 1990-08-01 | 1993-08-31 | Fuel Tech Gmbh | Process for the in-line hydrolysis of urea |
DE4203807A1 (de) * | 1990-11-29 | 1993-08-12 | Man Nutzfahrzeuge Ag | Vorrichtung zur katalytischen no(pfeil abwaerts)x(pfeil abwaerts)-reduktion |
DE4038054A1 (de) * | 1990-11-29 | 1992-06-04 | Man Technologie Gmbh | Verfahren und vorrichtung zur selektiven katalytischen no(pfeil abwaerts)x(pfeil abwaerts)-reduktion in sauerstoffhaltigen abgasen |
JP2887933B2 (ja) * | 1991-03-13 | 1999-05-10 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US5149511A (en) * | 1991-10-07 | 1992-09-22 | Ford Motor Company | Method of selectively reducing NOx |
DE4141581A1 (de) * | 1991-12-17 | 1993-06-24 | Didier Werke Ag | Verfahren zur minderung der stickoxidkonzentration in verbrennungsabgasen unter zugabe einer waessrigen harnstoffloesung |
EP0555746B1 (de) * | 1992-02-10 | 1997-09-10 | MAN Nutzfahrzeuge Aktiengesellschaft | Vorrichtung zur katalytischen NOX-Reduktion |
CA2088713C (en) * | 1992-02-24 | 1999-11-16 | Hans Thomas Hug | Cleaning exhaust gases from combustion installations |
DE69318461T2 (de) * | 1992-03-27 | 1998-12-17 | Nippon Shokubai Co. Ltd., Osaka | Verfahren und Vorrichtung zur Entfernung von Stickoxyden |
EP0577853B1 (de) * | 1992-05-08 | 1995-05-10 | Siemens Aktiengesellschaft | Einrichtung zur Entstickung von Abgas eines Verbrennungsmotors |
DE4217552C1 (es) * | 1992-05-27 | 1993-08-19 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE4237705A1 (de) * | 1992-11-07 | 1994-05-11 | Mtu Friedrichshafen Gmbh | Verfahren zum Steuern der Zugabemenge an Stickoxid-Reduktionsmitteln in das durch eine Abgasreinigungsanlage für Dieselmotoren strömendes Abgas |
EP0617199B1 (de) * | 1993-03-26 | 1996-01-31 | Siemens Aktiengesellschaft | Katalysator zur Stickoxidminderung im Abgas eines Verbrennungsmotors |
JPH09500164A (ja) * | 1993-07-12 | 1997-01-07 | プラチナム プラス インコーポレーテッド | ディーゼルエンジンからのNOx及び微粒子の排出を減少させる方法 |
US5354544A (en) * | 1993-12-27 | 1994-10-11 | Ford Motor Company | Selective reduction of nitric oxide |
DE4425018C1 (de) * | 1994-07-15 | 1995-06-29 | Daimler Benz Ag | Abgasreinigungssystem |
DE4436415A1 (de) * | 1994-10-12 | 1996-04-18 | Bosch Gmbh Robert | Einrichtung zum Nachbehandeln von Abgasen einer selbstzündenden Brennkraftmaschine |
DE4440833A1 (de) * | 1994-11-15 | 1996-02-08 | Bayerische Motoren Werke Ag | Katalysator-Anordnung zur Reduktion von Stickoxiden in sauerstoffhaltigen Abgasen einer Brennkraftmaschine, insbesondere Dieselmotor |
CA2141734C (en) * | 1995-01-25 | 2000-06-06 | Raj Narain Pandey | Selective catalytic reduction of nitrogen oxides |
DE19719998C2 (de) * | 1997-05-13 | 2003-10-30 | Daimler Chrysler Ag | Verfahren und Vorrichtung zur Stickoxidreduktion im Abgas einer Verbrennungseinrichtung |
DE19728343C5 (de) * | 1997-07-03 | 2013-02-21 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur selektiven katalytischen NOx-Reduktion |
DE19728344A1 (de) * | 1997-07-03 | 1999-01-07 | Abb Research Ltd | Verfahren und Vorrichtung zur Entstickung der Abgase von Verbrennungsanlagen |
DE19729003C2 (de) * | 1997-07-07 | 1999-05-27 | Siemens Ag | Tank für ein Fahrzeug mit reduktionsmittelbetriebener Abgas-Reinigungsanlage |
DE19813722C1 (de) | 1998-03-27 | 2000-03-23 | Siemens Ag | Verfahren und Vorrichtung zur katalytischen Reduzierung von Stickoxiden im Abgas einer Verbrennungsanlage |
JP3482874B2 (ja) * | 1998-05-28 | 2004-01-06 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP3580163B2 (ja) * | 1998-06-04 | 2004-10-20 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US6223526B1 (en) | 1998-06-17 | 2001-05-01 | Siemens Aktiengesellschaft | Dual compartment fuel storage tank |
DE19843960A1 (de) * | 1998-09-24 | 2000-03-30 | Siemens Ag | Verfahren und Vorrichtung zur katalytischen Verringerung des Schadstoffgehalts im Abgas einer Verbrennungsanlage |
US6125629A (en) * | 1998-11-13 | 2000-10-03 | Engelhard Corporation | Staged reductant injection for improved NOx reduction |
DE10047512A1 (de) * | 2000-09-22 | 2002-08-22 | Bosch Gmbh Robert | Vorrichtung zur Dosierung eines Reduktionsmittels |
JP5261189B2 (ja) * | 2005-12-14 | 2013-08-14 | ビーエーエスエフ コーポレーション | Nox選択的触媒還元効率の改善されたゼオライト触媒 |
DE202007019640U1 (de) | 2006-06-08 | 2014-10-17 | Inergy Automotive Systems Research (Société A.) | System zur Lagerung von Motorgasadditiven |
CN103110524B (zh) * | 2006-12-20 | 2017-06-09 | Edgewell个人护理品牌有限责任公司 | 用于婴儿奶瓶的排气阀组件 |
DE102007003156A1 (de) | 2007-01-22 | 2008-07-31 | Süd-Chemie AG | Vorrichtung zur selektiven katalytischen NOx-Reduktin in Abgasen |
CA2914389C (en) | 2013-03-15 | 2019-11-26 | 3D Clean Coal Emissions Stack, Llc | Cleaning stack gas |
US8821818B1 (en) | 2013-03-15 | 2014-09-02 | Three D Stack, LLC | Cleaning stack gas |
US9919269B2 (en) | 2013-03-15 | 2018-03-20 | 3D Clean Coal Emissions Stack Llc | Clean coal stack |
CA3024092A1 (en) | 2016-05-14 | 2017-11-23 | 3 D Clean Coal Emissions Stack, Llc | Clean gas stack |
DE102019208859A1 (de) | 2019-06-18 | 2020-12-24 | Skw Stickstoffwerke Piesteritz Gmbh | Verfahren zur kontinuierlichen Herstellung reiner Harnstofflösungen durch Verwertung von Prozesswasser |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1414293A (en) * | 1971-09-21 | 1975-11-19 | Ontario Research Foundation | Removal of oxides of nitrogen from gas streams |
US3801696A (en) * | 1971-11-18 | 1974-04-02 | J Mark | Apparatus for removing nitrogen oxides from engine exhaust |
JPS568652B2 (es) * | 1973-09-07 | 1981-02-25 | ||
GB1523726A (en) * | 1974-09-24 | 1978-09-06 | Shell Int Research | Process for removing no from a flue gas by selective reduction with |
US4104361A (en) * | 1975-03-28 | 1978-08-01 | Exxon Research & Engineering Co. | Catalyst for reduction of nitrogen oxides and process for preparing the same |
US4473535A (en) * | 1976-01-26 | 1984-09-25 | Northeast Utilities Service Company | Process for reducing nitric oxides |
JPS52117869A (en) * | 1976-03-31 | 1977-10-03 | Onoda Cement Co Ltd | Method for decreasing nitrogen oxides contained in combustion exhaust gas |
JPS5314662A (en) * | 1976-07-28 | 1978-02-09 | Hitachi Ltd | Method for decreasing nitrogen oxides concentration of combustion exhaust gas |
GB1560184A (en) * | 1977-05-31 | 1980-01-30 | Caterpillar Tractor Co | Dual catalyst nitric oxide reduction |
US4325924A (en) * | 1977-10-25 | 1982-04-20 | Electric Power Research Institute, Inc. | Urea reduction of NOx in fuel rich combustion effluents |
DE3001457A1 (de) * | 1980-01-14 | 1981-07-23 | Hans-Ulrich Dipl.-Chem. Kreusler | Verfahren zur verminderung der konzentration von stickstoffoxiden in abgasen |
DE3422175A1 (de) * | 1984-06-04 | 1985-12-19 | Julius Dr. 8000 München Kern | Verfahren zur beimischung von ammoniak zu saure schadstoffe enthaltenden abgasen oder luft |
DE3642018A1 (de) * | 1985-12-21 | 1987-06-25 | Volkswagen Ag | Verfahren und vorrichtung zur reduktion von stickoxiden |
DE3615021A1 (de) * | 1986-05-02 | 1987-11-05 | Ruhrgas Ag | Verfahren und vorrichtung zum selektiven katalytischen reduzieren der stickoxyde aus verbrennungsmotor-abgasen |
DE3802871A1 (de) * | 1987-01-31 | 1988-08-11 | Ibs Engineering & Consulting I | Anwendung eines katalysators auf der basis von modifiziertem zeolith, beladen mit einem oder mehreren metallen aus der gruppe von fe, cu, ni und co, im scr-verfahren |
DE3704030A1 (de) * | 1987-02-10 | 1988-08-18 | Ruhrgas Ag | Verfahren zum abscheiden von stickstoffoxiden aus abgasen durch selektive katalytische reduktion |
-
1988
- 1988-09-03 DE DE3830045A patent/DE3830045C2/de not_active Expired - Lifetime
-
1989
- 1989-08-19 EP EP89115327A patent/EP0364694B2/de not_active Expired - Lifetime
- 1989-08-19 ES ES89115327T patent/ES2054957T5/es not_active Expired - Lifetime
- 1989-08-19 DE DE58907982T patent/DE58907982D1/de not_active Expired - Fee Related
- 1989-08-21 US US07/395,985 patent/US4946659A/en not_active Expired - Lifetime
- 1989-09-01 KR KR1019890012619A patent/KR0127757B1/ko not_active IP Right Cessation
- 1989-09-01 JP JP1224764A patent/JP2931332B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0364694B2 (de) | 1997-08-06 |
EP0364694A1 (de) | 1990-04-25 |
JPH02139019A (ja) | 1990-05-29 |
DE3830045C2 (de) | 1993-09-30 |
JP2931332B2 (ja) | 1999-08-09 |
EP0364694B1 (de) | 1994-06-29 |
KR0127757B1 (ko) | 1997-12-30 |
DE58907982D1 (de) | 1994-08-04 |
DE3830045A1 (de) | 1990-03-15 |
KR900004391A (ko) | 1990-04-12 |
ES2054957T5 (es) | 1997-10-16 |
US4946659A (en) | 1990-08-07 |
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