FI64795C - Foerfarande foer framstaellning av laegre alkoholer genom direkt katalytisk hydratisering av laegre olefiner - Google Patents
Foerfarande foer framstaellning av laegre alkoholer genom direkt katalytisk hydratisering av laegre olefiner Download PDFInfo
- Publication number
- FI64795C FI64795C FI751615A FI751615A FI64795C FI 64795 C FI64795 C FI 64795C FI 751615 A FI751615 A FI 751615A FI 751615 A FI751615 A FI 751615A FI 64795 C FI64795 C FI 64795C
- Authority
- FI
- Finland
- Prior art keywords
- reactor
- olefin
- alcohol
- water
- pressure
- Prior art date
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims description 30
- 230000003197 catalytic effect Effects 0.000 title claims description 6
- 238000005057 refrigeration Methods 0.000 title 1
- 150000001336 alkenes Chemical class 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 39
- 239000007789 gas Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 28
- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical compound CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 claims description 22
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 18
- 238000006703 hydration reaction Methods 0.000 claims description 17
- 230000036571 hydration Effects 0.000 claims description 15
- 239000007795 chemical reaction product Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 11
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims description 10
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 10
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 8
- 150000001298 alcohols Chemical class 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 6
- 239000012043 crude product Substances 0.000 claims description 6
- 239000012071 phase Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims description 5
- HHBZZTKMMLDNDN-UHFFFAOYSA-N 2-butan-2-yloxybutane Chemical compound CCC(C)OC(C)CC HHBZZTKMMLDNDN-UHFFFAOYSA-N 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000008346 aqueous phase Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000011541 reaction mixture Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000011949 solid catalyst Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 239000013505 freshwater Substances 0.000 claims 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 21
- 239000003054 catalyst Substances 0.000 description 15
- 239000000047 product Substances 0.000 description 10
- 239000007791 liquid phase Substances 0.000 description 9
- 239000012808 vapor phase Substances 0.000 description 7
- 239000003729 cation exchange resin Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 150000002170 ethers Chemical class 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cyclohexene Chemical compound C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- -1 ethylene, propylene, butene Chemical class 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 235000011007 phosphoric acid Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229940023913 cation exchange resins Drugs 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- KVIPHDKUOLVVQN-UHFFFAOYSA-N ethene;hydrate Chemical group O.C=C KVIPHDKUOLVVQN-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/03—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2
- C07C29/04—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2429770A DE2429770C3 (de) | 1974-06-21 | 1974-06-21 | Verfahren zur Herstellung von niederen Alkoholen durch direkte katalytische Hydratisierung niederer Olefine |
| DE2429770 | 1974-06-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI751615A7 FI751615A7 (en, 2012) | 1975-12-22 |
| FI64795B FI64795B (fi) | 1983-09-30 |
| FI64795C true FI64795C (fi) | 1984-01-10 |
Family
ID=5918577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI751615A FI64795C (fi) | 1974-06-21 | 1975-06-02 | Foerfarande foer framstaellning av laegre alkoholer genom direkt katalytisk hydratisering av laegre olefiner |
Country Status (24)
| Country | Link |
|---|---|
| US (1) | US3994983A (en, 2012) |
| JP (1) | JPS6024082B2 (en, 2012) |
| AR (1) | AR202990A1 (en, 2012) |
| AT (1) | AT346295B (en, 2012) |
| BE (1) | BE830476A (en, 2012) |
| BR (1) | BR7503847A (en, 2012) |
| CA (1) | CA1072124A (en, 2012) |
| CS (1) | CS195294B2 (en, 2012) |
| DD (1) | DD118064A5 (en, 2012) |
| DE (1) | DE2429770C3 (en, 2012) |
| DK (1) | DK153537C (en, 2012) |
| ES (1) | ES438022A1 (en, 2012) |
| FI (1) | FI64795C (en, 2012) |
| FR (1) | FR2275428A1 (en, 2012) |
| GB (1) | GB1517334A (en, 2012) |
| IN (1) | IN145142B (en, 2012) |
| IT (1) | IT1038586B (en, 2012) |
| NL (1) | NL183996C (en, 2012) |
| NO (1) | NO146633C (en, 2012) |
| RO (1) | RO73532A (en, 2012) |
| SE (1) | SE420714B (en, 2012) |
| TR (1) | TR18526A (en, 2012) |
| YU (1) | YU39116B (en, 2012) |
| ZA (1) | ZA753955B (en, 2012) |
Families Citing this family (49)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065512A (en) * | 1976-07-06 | 1977-12-27 | Petro-Tex Chemical Corporation | Iso-C4 compound reactions with perfluorosulfonic acid resin catalysts |
| US4087471A (en) * | 1977-05-20 | 1978-05-02 | Petro-Tex Chemical Corporation | Fixed bed process for the production of t-butanol |
| US4100220A (en) * | 1977-06-27 | 1978-07-11 | Petro-Tex Chemical Corporation | Dimerization of isobutene |
| DE2922545C2 (de) * | 1978-06-08 | 1982-06-03 | Asahi Kasei Kogyo K.K., Osaka | Verfahren zur Herstellung von tert.-Butanol |
| DE3024146C2 (de) * | 1980-06-27 | 1983-07-21 | Deutsche Texaco Ag, 2000 Hamburg | Verfahren zur kontinuierlichen Herstellung von Alkoholen mit 3 bis 5 Kohlenstoffatomen |
| DE3040997C2 (de) * | 1980-10-31 | 1983-07-21 | Deutsche Texaco Ag, 2000 Hamburg | Verfahren zur kontinuierlichen Herstellung von sek.-Butylalkohol |
| JPS6059217B2 (ja) * | 1980-12-25 | 1985-12-24 | 東亜燃料工業株式会社 | 第２級アルコ−ルの製造方法 |
| US4424388A (en) | 1981-07-20 | 1984-01-03 | Improtec | Production of alcohols by hydration of olefins |
| US4469905A (en) * | 1981-11-04 | 1984-09-04 | Union Oil Company Of California | Process for producing and extracting C2 to C6 alcohols |
| US4469903A (en) * | 1983-09-21 | 1984-09-04 | Uop Inc. | Process for the production of isopropyl alcohol |
| US4482767A (en) * | 1983-12-20 | 1984-11-13 | Uop Inc. | Process for production of alcohols and LPG |
| US4484013A (en) * | 1983-12-30 | 1984-11-20 | Uop Inc. | Process for coproduction of isopropanol and tertiary butyl alcohol |
| DE3419392C1 (de) * | 1984-05-24 | 1985-12-05 | Deutsche Texaco Ag, 2000 Hamburg | Verfahren zur kontinuierlichen Herstellung von Isopropylalkohol oder sek. Butylalkohol |
| DE3512518A1 (de) * | 1985-04-06 | 1986-10-09 | Deutsche Texaco Ag, 2000 Hamburg | Verfahren zur kontinuierlichen herstellung von niederen alkoholen |
| DE3628007C1 (en, 2012) * | 1986-08-19 | 1987-11-05 | Deutsche Texaco Ag, 2000 Hamburg, De | |
| AU598845B2 (en) * | 1986-08-19 | 1990-07-05 | Rwe-Dea Aktiengesellschaft Fur Mineraloel Und Chemie | Process for the production of isopropanol and tertiary alcohols with 4 to 5 carbon atoms |
| DE3728428A1 (de) * | 1987-08-26 | 1989-03-09 | Texaco Ag | Verfahren zur destillativen reinigung von rohem sec-butylalkohol |
| US4982022A (en) * | 1989-08-28 | 1991-01-01 | Chemical Research & Licensing Company | Process for the preparation of tertiary alcohols |
| JP2969399B2 (ja) * | 1991-10-07 | 1999-11-02 | 旭化成工業株式会社 | 環状オレフィンの水和反応方法 |
| EP0614866B1 (en) * | 1991-10-07 | 1997-01-02 | Asahi Kasei Kogyo Kabushiki Kaisha | Method for hydrating a cycloolefin |
| CN1052468C (zh) * | 1992-12-25 | 2000-05-17 | 旭化成工业株式会社 | 环烯烃水合法 |
| US5488185A (en) * | 1993-09-30 | 1996-01-30 | The Boc Group, Inc. | Process for the production of ethanol and isopropanol |
| TW318831B (en, 2012) * | 1994-12-15 | 1997-11-01 | Mitsui Toatsu Chemicals | |
| US5763693A (en) * | 1995-02-24 | 1998-06-09 | Mitsui Chemicals, Inc. | Process for producing isopropyl alcohol |
| TW338031B (en) * | 1995-02-24 | 1998-08-11 | Mitsui Toatsu Chemicals | Process for producing isopropyl alcohol |
| RU2141468C1 (ru) * | 1998-02-19 | 1999-11-20 | Общество с ограниченной ответственностью "НИЦ НХТ" | Способ гидратации алкенов |
| US8558036B2 (en) | 2010-11-15 | 2013-10-15 | Saudi Arabian Oil Company | Dual phase catalysts system for mixed olefin hydrations |
| US8865950B2 (en) | 2011-08-10 | 2014-10-21 | Saudi Arabian Oil Company | Olefin hydration process with an integrated membrane reactor |
| KR101876612B1 (ko) | 2011-12-05 | 2018-07-09 | 사우디 아라비안 오일 컴퍼니 | 친수성 멤브레인 통합형 올레핀 수화 공정 |
| CA3092028C (en) | 2012-01-13 | 2022-08-30 | Lummus Technology Llc | Process for separating hydrocarbon compounds |
| US9670113B2 (en) | 2012-07-09 | 2017-06-06 | Siluria Technologies, Inc. | Natural gas processing and systems |
| WO2014089479A1 (en) | 2012-12-07 | 2014-06-12 | Siluria Technologies, Inc. | Integrated processes and systems for conversion of methane to multiple higher hydrocarbon products |
| WO2015081122A2 (en) | 2013-11-27 | 2015-06-04 | Siluria Technologies, Inc. | Reactors and systems for oxidative coupling of methane |
| EP3092286A4 (en) | 2014-01-08 | 2017-08-09 | Siluria Technologies, Inc. | Ethylene-to-liquids systems and methods |
| EP3097068A4 (en) | 2014-01-09 | 2017-08-16 | Siluria Technologies, Inc. | Oxidative coupling of methane implementations for olefin production |
| US10377682B2 (en) | 2014-01-09 | 2019-08-13 | Siluria Technologies, Inc. | Reactors and systems for oxidative coupling of methane |
| EP2939995A1 (en) | 2014-04-30 | 2015-11-04 | Sasol Solvents Germany GmbH | Improved water management for the production of isopropyl alcohol by gas phase propylene hydration |
| US9334204B1 (en) | 2015-03-17 | 2016-05-10 | Siluria Technologies, Inc. | Efficient oxidative coupling of methane processes and systems |
| US10793490B2 (en) | 2015-03-17 | 2020-10-06 | Lummus Technology Llc | Oxidative coupling of methane methods and systems |
| US20160289143A1 (en) | 2015-04-01 | 2016-10-06 | Siluria Technologies, Inc. | Advanced oxidative coupling of methane |
| US9328297B1 (en) | 2015-06-16 | 2016-05-03 | Siluria Technologies, Inc. | Ethylene-to-liquids systems and methods |
| EP3786138A1 (en) | 2015-10-16 | 2021-03-03 | Lummus Technology LLC | Oxidative coupling of methane |
| US9944573B2 (en) | 2016-04-13 | 2018-04-17 | Siluria Technologies, Inc. | Oxidative coupling of methane for olefin production |
| EP3548456A4 (en) * | 2016-12-02 | 2020-10-28 | Lummus Technology LLC | SYSTEMS AND METHODS FOR CONVERTING ETHYLENE INTO LIQUIDS |
| EP3554672A4 (en) | 2016-12-19 | 2020-08-12 | Siluria Technologies, Inc. | PROCEDURES AND SYSTEMS FOR CHEMICAL DEPOSITION |
| JP2020521811A (ja) | 2017-05-23 | 2020-07-27 | ラマス テクノロジー リミテッド ライアビリティ カンパニー | メタン酸化カップリングプロセスの統合 |
| WO2019010498A1 (en) | 2017-07-07 | 2019-01-10 | Siluria Technologies, Inc. | SYSTEMS AND METHODS FOR OXIDIZING METHANE COUPLING |
| CN110172013B (zh) * | 2019-06-24 | 2023-06-16 | 中国石油化工股份有限公司 | 一种基于催化蒸馏溶剂法合成叔戊醇的工艺 |
| CA3228565A1 (en) | 2021-08-31 | 2023-03-09 | Gary Podrebarac | Methods and systems for performing oxidative coupling of methane |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2144750A (en) * | 1934-03-05 | 1939-01-24 | Shell Dev | Process for the production of hydrated olefines |
| GB1093071A (en) * | 1964-05-13 | 1967-11-29 | British Industrial Plastics | Polyester compositions |
| US3548013A (en) * | 1966-06-30 | 1970-12-15 | Standard Oil Co | Process for the production of alcohols |
-
1974
- 1974-06-21 DE DE2429770A patent/DE2429770C3/de not_active Expired
-
1975
- 1975-05-28 ES ES438022A patent/ES438022A1/es not_active Expired
- 1975-05-30 IT IT23888/75A patent/IT1038586B/it active
- 1975-06-02 YU YU01405/75A patent/YU39116B/xx unknown
- 1975-06-02 FI FI751615A patent/FI64795C/fi not_active IP Right Cessation
- 1975-06-03 AR AR259052A patent/AR202990A1/es active
- 1975-06-12 US US05/586,325 patent/US3994983A/en not_active Expired - Lifetime
- 1975-06-13 CA CA229,344A patent/CA1072124A/en not_active Expired
- 1975-06-16 GB GB25601/75A patent/GB1517334A/en not_active Expired
- 1975-06-16 SE SE7506885A patent/SE420714B/xx not_active IP Right Cessation
- 1975-06-17 IN IN1191/CAL/75A patent/IN145142B/en unknown
- 1975-06-17 NO NO752157A patent/NO146633C/no unknown
- 1975-06-17 RO RO7582570A patent/RO73532A/ro unknown
- 1975-06-19 JP JP50075000A patent/JPS6024082B2/ja not_active Expired
- 1975-06-19 BR BR4949/75D patent/BR7503847A/pt unknown
- 1975-06-19 DD DD186760A patent/DD118064A5/xx unknown
- 1975-06-20 DK DK281075A patent/DK153537C/da not_active IP Right Cessation
- 1975-06-20 FR FR7519484A patent/FR2275428A1/fr active Granted
- 1975-06-20 CS CS754393A patent/CS195294B2/cs unknown
- 1975-06-20 ZA ZA00753955A patent/ZA753955B/xx unknown
- 1975-06-20 TR TR18526A patent/TR18526A/xx unknown
- 1975-06-20 AT AT475875A patent/AT346295B/de not_active IP Right Cessation
- 1975-06-20 BE BE157538A patent/BE830476A/xx not_active IP Right Cessation
- 1975-06-20 NL NLAANVRAGE7507409,A patent/NL183996C/xx not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: RWE-DEA AKTIENGESELLSCHAFT FUER MINERAL- |