DE69509488D1 - Mehrstufenverfahren zur (co)-polymerisierung von olefinen - Google Patents
Mehrstufenverfahren zur (co)-polymerisierung von olefinenInfo
- Publication number
- DE69509488D1 DE69509488D1 DE69509488T DE69509488T DE69509488D1 DE 69509488 D1 DE69509488 D1 DE 69509488D1 DE 69509488 T DE69509488 T DE 69509488T DE 69509488 T DE69509488 T DE 69509488T DE 69509488 D1 DE69509488 D1 DE 69509488D1
- Authority
- DE
- Germany
- Prior art keywords
- stage
- olefins
- stage process
- reactors
- polymerization
- 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
- 150000001336 alkenes Chemical class 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 150000005840 aryl radicals Chemical group 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 125000000753 cycloalkyl group Chemical group 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F295/00—Macromolecular compounds obtained by polymerisation using successively different catalyst types without deactivating the intermediate polymer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/642—Component covered by group C08F4/64 with an organo-aluminium compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/04—Monomers containing three or four carbon atoms
- C08F110/06—Propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2410/00—Features related to the catalyst preparation, the catalyst use or to the deactivation of the catalyst
- C08F2410/05—Transitioning, i.e. transition from one catalyst to another with use of a deactivating agent
-
- 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
- Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S526/901—Monomer polymerized in vapor state in presence of transition metal containing catalyst
-
- 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
- Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S526/943—Polymerization with metallocene catalysts
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI941515A IT1273660B (it) | 1994-07-20 | 1994-07-20 | Procedimento per la preparazione di polimeri amorfi del propilene |
PCT/EP1995/002808 WO1996002583A1 (en) | 1994-07-20 | 1995-07-18 | Multistage process for the (co)polymerization of olefins |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69509488D1 true DE69509488D1 (de) | 1999-06-10 |
DE69509488T2 DE69509488T2 (de) | 1999-11-04 |
Family
ID=11369316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69509488T Expired - Lifetime DE69509488T2 (de) | 1994-07-20 | 1995-07-18 | Mehrstufenverfahren zur (co)-polymerisierung von olefinen |
Country Status (27)
Country | Link |
---|---|
US (1) | US5589549A (de) |
EP (1) | EP0720629B1 (de) |
JP (1) | JP4131986B2 (de) |
KR (1) | KR100375361B1 (de) |
CN (1) | CN1070504C (de) |
AT (1) | ATE179724T1 (de) |
AU (1) | AU693239B2 (de) |
BG (1) | BG63015B1 (de) |
BR (1) | BR9506342A (de) |
CA (1) | CA2171835A1 (de) |
CZ (1) | CZ290718B6 (de) |
DE (1) | DE69509488T2 (de) |
DK (1) | DK0720629T3 (de) |
ES (1) | ES2132695T3 (de) |
FI (1) | FI961268A (de) |
HU (1) | HU214988B (de) |
IL (1) | IL114638A (de) |
IT (1) | IT1273660B (de) |
MX (1) | MX9601041A (de) |
NO (1) | NO309430B1 (de) |
PL (1) | PL313587A1 (de) |
RU (1) | RU2176252C2 (de) |
SK (1) | SK281620B6 (de) |
TR (1) | TR199500879A2 (de) |
TW (1) | TW424099B (de) |
WO (1) | WO1996002583A1 (de) |
ZA (1) | ZA955987B (de) |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1269931B (it) * | 1994-03-29 | 1997-04-16 | Spherilene Srl | Componenti e catalizzatori per la polimerizzazione di olefine |
JPH10505622A (ja) * | 1994-09-08 | 1998-06-02 | モービル・オイル・コーポレーション | 単一の反応器内での広い/2モードのmwdの樹脂の触媒制御 |
US5840808A (en) * | 1995-02-07 | 1998-11-24 | Mitsui Petrochemical Industries, Ltd. | Process for preparing olefin polymer |
CA2188722A1 (en) * | 1995-10-26 | 1997-04-27 | George Norris Foster | Process for preparing an in situ polyethylene blend |
US5952423A (en) * | 1997-07-18 | 1999-09-14 | Baxter International Inc. | Plastic compositions for medical containers and methods for providing such containers and for storing red blood cells |
US6468258B1 (en) | 1997-07-18 | 2002-10-22 | Baxter International Inc. | Plastic compositions including vitamin E for medical containers and methods for providing such compositions and containers |
EP0905153B1 (de) * | 1997-09-27 | 2004-03-31 | ATOFINA Research | Herstellung von Polyäthylen mit einer breiten Molekulargewichtsverteilung |
EP0905151A1 (de) * | 1997-09-27 | 1999-03-31 | Fina Research S.A. | Herstellung von Polyäthylen mit einer breiten Molekulargewichtsverteilung |
US6197910B1 (en) | 1997-12-10 | 2001-03-06 | Exxon Chemical Patents, Inc. | Propylene polymers incorporating macromers |
US6184327B1 (en) | 1997-12-10 | 2001-02-06 | Exxon Chemical Patents, Inc. | Elastomeric propylene polymers |
EP0942011B1 (de) * | 1998-03-09 | 2003-05-14 | Basell Poliolefine Italia S.p.A. | Mehrstufiges Verfahren zur Olefinpolymerisation |
ES2198098T3 (es) | 1998-03-09 | 2004-01-16 | Basell Poliolefine Italia S.P.A. | Procedimiento multietapas para la polimerizacion de olefinas. |
US7354880B2 (en) * | 1998-07-10 | 2008-04-08 | Univation Technologies, Llc | Catalyst composition and methods for its preparation and use in a polymerization process |
NL1010294C2 (nl) * | 1998-10-12 | 2000-04-13 | Dsm Nv | Werkwijze en inrichting voor de bereiding van een olefine-polymeer. |
ES2208301T3 (es) * | 1999-03-09 | 2004-06-16 | Basell Polyolefine Gmbh | Procedimiento multietapa para la (co)polimerizacion de olefinas. |
ITMI991552A1 (it) * | 1999-07-14 | 2001-01-14 | Licio Zambon | Componenti di catalizzatori per la polimerizzazione di olefine |
AU3538601A (en) | 1999-12-28 | 2001-07-09 | Basell Technology Company B.V. | Process for the preparation of ethylene polymers |
US6765066B2 (en) * | 1999-12-30 | 2004-07-20 | Bridgestone Corporation | Copolymers prepared by using both anionic polymerization techniques and coordination catalysts |
JP4955882B2 (ja) * | 1999-12-30 | 2012-06-20 | 株式会社ブリヂストン | アニオン重合技術と配位触媒の両方を使用することにより製造された共重合体 |
JP2003528195A (ja) | 2000-03-22 | 2003-09-24 | バセル テクノロジー カンパニー ビー.ブイ. | アイソタクチックプロピレンポリマーとアイソタクチシティの減少した軟質プロピレンポリマーとの熱可塑性組成物およびその製造法 |
GB0008690D0 (en) * | 2000-04-07 | 2000-05-31 | Borealis Polymers Oy | Process |
WO2002051887A2 (en) * | 2000-12-22 | 2002-07-04 | Basell Poliolefine Italia S.P.A. | Process for the preparation of porous polymers and polymers obtainable thereof |
EP1406969A1 (de) | 2001-07-17 | 2004-04-14 | Basell Polyolefine GmbH | Mehrstufenpolymerisationsverfahren für olefinen |
CN1982361B (zh) | 2001-08-17 | 2011-11-16 | 陶氏环球技术有限责任公司 | 双峰聚乙烯组合物及其制品 |
US20050003951A1 (en) * | 2001-11-27 | 2005-01-06 | Angelo Ferraro | Porous polymers of propylene |
WO2003046022A1 (en) * | 2001-11-27 | 2003-06-05 | Basell Polyolefine Gmbh | Process for the treatment of polymer compositions |
US6916892B2 (en) * | 2001-12-03 | 2005-07-12 | Fina Technology, Inc. | Method for transitioning between Ziegler-Natta and metallocene catalysts in a bulk loop reactor for the production of polypropylene |
US6890876B2 (en) * | 2002-11-26 | 2005-05-10 | Univation Technologies, Llc | Processes for producing fluorided catalysts from nitrogenous metallocenes |
WO2004092230A1 (en) * | 2003-04-17 | 2004-10-28 | Basell Polyolefine Gmbh | Process for preparing porous polymers and polymers thereof |
EP1518866A1 (de) * | 2003-09-29 | 2005-03-30 | Basell Poliolefine Italia S.P.A. | Verfahren zur Herstellung von porösen Ethylenpolymeren |
EP2216347A1 (de) * | 2009-01-30 | 2010-08-11 | Borealis AG | Verfahren für Katalysatorübergänge in Olefinpolymerisierungen |
EP2383298A1 (de) * | 2010-04-30 | 2011-11-02 | Ineos Europe Limited | Polymerisierungsverfahren |
EP2383301A1 (de) | 2010-04-30 | 2011-11-02 | Ineos Europe Limited | Polymerisierungsverfahren |
US11267916B2 (en) | 2014-02-07 | 2022-03-08 | Eastman Chemical Company | Adhesive composition comprising amorphous propylene-ethylene copolymer and polyolefins |
US10723824B2 (en) | 2014-02-07 | 2020-07-28 | Eastman Chemical Company | Adhesives comprising amorphous propylene-ethylene copolymers |
US10308740B2 (en) | 2014-02-07 | 2019-06-04 | Eastman Chemical Company | Amorphous propylene-ethylene copolymers |
US10647795B2 (en) | 2014-02-07 | 2020-05-12 | Eastman Chemical Company | Adhesive composition comprising amorphous propylene-ethylene copolymer and polyolefins |
US9399686B2 (en) | 2014-02-07 | 2016-07-26 | Eastman Chemical Company | Amorphous propylene-ethylene copolymers |
US10696765B2 (en) | 2014-02-07 | 2020-06-30 | Eastman Chemical Company | Adhesive composition comprising amorphous propylene-ethylene copolymer and propylene polymer |
US10280235B2 (en) | 2015-06-05 | 2019-05-07 | Exxonmobil Chemical Patents Inc. | Catalyst system containing high surface area supports and sequential polymerization to produce heterophasic polymers |
US10759886B2 (en) | 2015-06-05 | 2020-09-01 | Exxonmobil Chemical Patents Inc. | Single reactor production of polymers in gas or slurry phase |
US10329360B2 (en) | 2015-06-05 | 2019-06-25 | Exxonmobil Chemical Patents Inc. | Catalyst system comprising supported alumoxane and unsupported alumoxane particles |
US9920176B2 (en) | 2015-06-05 | 2018-03-20 | Exxonmobil Chemical Patents Inc. | Single site catalyst supportation |
US10077325B2 (en) | 2015-06-05 | 2018-09-18 | Exxonmobil Chemical Patents Inc. | Silica supports with high aluminoxane loading capability |
US9725537B2 (en) | 2015-06-05 | 2017-08-08 | Exxonmobil Chemical Patents Inc. | High activity catalyst supportation |
US9738779B2 (en) | 2015-06-05 | 2017-08-22 | Exxonmobil Chemical Patents Inc. | Heterophasic copolymers and sequential polymerization |
WO2016195868A1 (en) * | 2015-06-05 | 2016-12-08 | Exxonmobil Chemical Patents Inc. | Single site catalyst supportation |
US9809664B2 (en) | 2015-06-05 | 2017-11-07 | Exxonmobil Chemical Patents Inc. | Bimodal propylene polymers and sequential polymerization |
US9725569B2 (en) | 2015-06-05 | 2017-08-08 | Exxonmobil Chemical Patents Inc. | Porous propylene polymers |
US10294316B2 (en) | 2015-06-05 | 2019-05-21 | Exxonmobil Chemical Patents Inc. | Silica supports with high aluminoxane loading capability |
WO2016195866A1 (en) * | 2015-06-05 | 2016-12-08 | Exxonmobil Chemical Patents Inc. | High activity catalyst supportation |
US10570219B2 (en) | 2015-06-05 | 2020-02-25 | Exxonmobil Chemical Patents Inc. | Production of heterophasic polymers in gas or slurry phase |
US10280233B2 (en) | 2015-06-05 | 2019-05-07 | Exxonmobil Chemical Patents Inc. | Catalyst systems and methods of making and using the same |
US10723821B2 (en) | 2015-06-05 | 2020-07-28 | Exxonmobil Chemical Patents Inc. | Supported metallocene catalyst systems for polymerization |
EP3464390A1 (de) | 2016-05-27 | 2019-04-10 | ExxonMobil Chemical Patents Inc. | Metallocenkatalysatorzusammensetzungen und und polymerisationsverfahren damit |
JP7044710B2 (ja) * | 2016-10-03 | 2022-03-30 | 東邦チタニウム株式会社 | オレフィン類重合用固体触媒成分、オレフィン類重合用固体触媒成分の製造方法、オレフィン類重合用触媒、オレフィン類重合体の製造方法、プロピレン系共重合体の製造方法およびプロピレン系共重合体 |
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NL162661B (nl) * | 1968-11-21 | 1980-01-15 | Montedison Spa | Werkwijze om een katalysator te bereiden voor de poly- merisatie van alkenen-1. |
YU35844B (en) * | 1968-11-25 | 1981-08-31 | Montedison Spa | Process for obtaining catalysts for the polymerization of olefines |
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JPS59120611A (ja) * | 1982-12-27 | 1984-07-12 | Idemitsu Petrochem Co Ltd | プロピレンブロツク共重合体の製造方法 |
IT1227260B (it) * | 1988-09-30 | 1991-03-28 | Himont Inc | Dieteri utilizzabili nella preparazione di catalizzatori ziegler-natta |
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JP3046361B2 (ja) * | 1989-12-13 | 2000-05-29 | 三井化学株式会社 | α−オレフィンの重合方法 |
DE3942364A1 (de) * | 1989-12-21 | 1991-06-27 | Hoechst Ag | Verfahren zur herstellung einer polypropylen-formmasse |
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JP3044668B2 (ja) * | 1990-09-27 | 2000-05-22 | 三菱化学株式会社 | プロピレンブロック共重合体の製造法 |
DE59109217D1 (de) * | 1990-11-12 | 2001-09-20 | Basell Polyolefine Gmbh | Verfahren zur Herstellung eines Olefinpolymers |
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IT1262935B (it) * | 1992-01-31 | 1996-07-22 | Montecatini Tecnologie Srl | Componenti e catalizzatori per la polimerizzazione di olefine |
IT1262934B (it) * | 1992-01-31 | 1996-07-22 | Montecatini Tecnologie Srl | Componenti e catalizzatori per la polimerizzazione di olefine |
IT1254547B (it) * | 1992-03-23 | 1995-09-25 | Montecatini Tecnologie Srl | Copolimeri elastomerici dell'etilene con alfa-olefine. |
FI112233B (fi) * | 1992-04-01 | 2003-11-14 | Basell Polyolefine Gmbh | Katalyytti olefiinipolymerointia varten, menetelmä sen valmistamiseksi ja sen käyttö |
IT1264406B1 (it) * | 1993-05-11 | 1996-09-23 | Spherilene Srl | Copolimeri amorfi dell'etilene con alfa-olefine e procedimento per la loro preparazione |
EP0598543B1 (de) * | 1992-11-10 | 1997-01-15 | Mitsubishi Chemical Corporation | Verfahren zur Herstellung von Alpha-Olefinpolymeren |
IT1256260B (it) * | 1992-12-30 | 1995-11-29 | Montecatini Tecnologie Srl | Polipropilene atattico |
IT1264482B1 (it) * | 1993-06-30 | 1996-09-23 | Spherilene Srl | Copolimeri amorfi dell'etilene con propilene e procedimento per la loro preparazione |
IT1264483B1 (it) * | 1993-06-30 | 1996-09-23 | Spherilene Srl | Copolimeri elastomerici dell'etilene con propilene |
JPH0790035A (ja) * | 1993-07-27 | 1995-04-04 | Ube Ind Ltd | プロピレンブロック共重合体の製造方法 |
IT1271407B (it) * | 1993-09-13 | 1997-05-28 | Spherilene Srl | Procedimento per la preparazione di copolimeri elastomerici dell'etilene e prodotti ottenuti |
IT1271406B (it) * | 1993-09-13 | 1997-05-28 | Spherilene Srl | Procedimento per la preparazione di polimeri dell'etilene e prodotti ottenuti |
-
1994
- 1994-07-20 IT ITMI941515A patent/IT1273660B/it active IP Right Grant
-
1995
- 1995-06-05 US US08/461,136 patent/US5589549A/en not_active Expired - Lifetime
- 1995-07-18 MX MX9601041A patent/MX9601041A/es unknown
- 1995-07-18 BR BR9506342A patent/BR9506342A/pt not_active IP Right Cessation
- 1995-07-18 SK SK493-96A patent/SK281620B6/sk unknown
- 1995-07-18 ES ES95926921T patent/ES2132695T3/es not_active Expired - Lifetime
- 1995-07-18 CZ CZ19961135A patent/CZ290718B6/cs not_active IP Right Cessation
- 1995-07-18 AU AU31132/95A patent/AU693239B2/en not_active Ceased
- 1995-07-18 IL IL11463895A patent/IL114638A/xx not_active IP Right Cessation
- 1995-07-18 KR KR1019960701424A patent/KR100375361B1/ko not_active IP Right Cessation
- 1995-07-18 WO PCT/EP1995/002808 patent/WO1996002583A1/en active IP Right Grant
- 1995-07-18 AT AT95926921T patent/ATE179724T1/de not_active IP Right Cessation
- 1995-07-18 JP JP50470896A patent/JP4131986B2/ja not_active Expired - Fee Related
- 1995-07-18 CA CA002171835A patent/CA2171835A1/en not_active Abandoned
- 1995-07-18 ZA ZA955987A patent/ZA955987B/xx unknown
- 1995-07-18 DK DK95926921T patent/DK0720629T3/da active
- 1995-07-18 PL PL95313587A patent/PL313587A1/xx unknown
- 1995-07-18 DE DE69509488T patent/DE69509488T2/de not_active Expired - Lifetime
- 1995-07-18 HU HU9600841A patent/HU214988B/hu not_active IP Right Cessation
- 1995-07-18 EP EP95926921A patent/EP0720629B1/de not_active Expired - Lifetime
- 1995-07-18 CN CN95190833A patent/CN1070504C/zh not_active Expired - Fee Related
- 1995-07-18 RU RU96118237/04A patent/RU2176252C2/ru not_active IP Right Cessation
- 1995-07-20 TR TR95/00879A patent/TR199500879A2/xx unknown
- 1995-07-28 TW TW084107824A patent/TW424099B/zh not_active IP Right Cessation
-
1996
- 1996-03-19 FI FI961268A patent/FI961268A/fi unknown
- 1996-03-19 NO NO961108A patent/NO309430B1/no not_active IP Right Cessation
- 1996-04-18 BG BG100515A patent/BG63015B1/bg unknown
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