ATE59033T1 - N-enthaltende heterozyklische verbindungen, verfahren zu deren herstellung und diese enthaltende arzneimittel. - Google Patents
N-enthaltende heterozyklische verbindungen, verfahren zu deren herstellung und diese enthaltende arzneimittel.Info
- Publication number
- ATE59033T1 ATE59033T1 AT86309657T AT86309657T ATE59033T1 AT E59033 T1 ATE59033 T1 AT E59033T1 AT 86309657 T AT86309657 T AT 86309657T AT 86309657 T AT86309657 T AT 86309657T AT E59033 T1 ATE59033 T1 AT E59033T1
- Authority
- AT
- Austria
- Prior art keywords
- alkyl
- optionally substituted
- preparation
- chem
- containing heterocyclic
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D213/28—Radicals substituted by singly-bound oxygen or sulphur atoms
- C07D213/30—Oxygen atoms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/68—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D211/72—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D211/78—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D213/26—Radicals substituted by halogen atoms or nitro radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D213/36—Radicals substituted by singly-bound nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
- C07D213/80—Acids; Esters in position 3
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/81—Amides; Imides
- C07D213/82—Amides; Imides in position 3
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
- C07D237/02—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings
- C07D237/04—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having less than three double bonds between ring members or between ring members and non-ring members
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
- C07D237/02—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings
- C07D237/06—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D237/08—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
- C07D237/02—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings
- C07D237/06—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D237/10—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D237/24—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Neurosurgery (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Neurology (AREA)
- Public Health (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Hospice & Palliative Care (AREA)
- Cardiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Psychiatry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pyridine Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Plural Heterocyclic Compounds (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB858530602A GB8530602D0 (en) | 1985-12-12 | 1985-12-12 | Heterocyclic compounds |
EP86309657A EP0228845B1 (de) | 1985-12-12 | 1986-12-11 | N-Enthaltende heterozyklische Verbindungen, Verfahren zu deren Herstellung und diese enthaltende Arzneimittel |
HU885132A HUT51614A (en) | 1985-12-12 | 1988-10-04 | Process for producing cardio-protective and suitable for treating ischemic illnesses pharmaceutical compositions containing nitriferous heterocyclic compounds as active agent as well as for producing the active agents |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE59033T1 true ATE59033T1 (de) | 1990-12-15 |
Family
ID=26290107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT86309657T ATE59033T1 (de) | 1985-12-12 | 1986-12-11 | N-enthaltende heterozyklische verbindungen, verfahren zu deren herstellung und diese enthaltende arzneimittel. |
Country Status (8)
Country | Link |
---|---|
US (2) | US4831030A (de) |
EP (1) | EP0228845B1 (de) |
JP (1) | JPH0739391B2 (de) |
AT (1) | ATE59033T1 (de) |
DE (1) | DE3676179D1 (de) |
ES (1) | ES2037665T3 (de) |
GB (1) | GB8530602D0 (de) |
GR (1) | GR3001506T3 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8530602D0 (en) * | 1985-12-12 | 1986-01-22 | Fujisawa Pharmaceutical Co | Heterocyclic compounds |
FI884418A (fi) * | 1987-10-05 | 1989-04-06 | Fujisawa Pharmaceutical Co | Hjaertskyddande aemne och ett terapeutiskt aemne foer ischemiska sjukdomar omfattande n-innehaollande heterocykliska foereningar, och ett foerfarande foer framstaellning av dessa foereningar. |
GB8905526D0 (en) * | 1989-03-10 | 1989-04-19 | Fujisawa Pharmaceutical Co | N-containing heterocyclic compounds,processes for the preparation thereof and composition comprising the same |
WO1994027604A1 (fr) * | 1993-05-28 | 1994-12-08 | Taisho Pharmaceutical Co., Ltd. | Utilisation medicale d'un derive de pyridine |
US6384058B1 (en) | 1997-12-11 | 2002-05-07 | American Home Products Corporation | 2,4,6-trisubstituted pryridines with estrogenic activity and methods for the solid phase synthesis thereof |
US6503917B1 (en) | 1998-12-10 | 2003-01-07 | Wyeth, Five Giralda Farms | 2,4,6-trisubstituted pyridines with estrogenic activity and methods for the solid phase synthesis thereof |
EP2295060B1 (de) * | 2001-12-06 | 2018-10-31 | Fibrogen, Inc. | Behandlung ischämischer oder hypoxischer Zustände |
JP2005524612A (ja) * | 2001-12-06 | 2005-08-18 | ファイブローゲン、インコーポレーテッド | 内因性エリスロポエチン(epo)を増加させる方法 |
GB0215293D0 (en) | 2002-07-03 | 2002-08-14 | Rega Foundation | Viral inhibitors |
US7342115B2 (en) * | 2002-11-08 | 2008-03-11 | Neurogen Corporation | 3-substituted-6-aryl pyridines |
US20050222198A1 (en) | 2003-12-22 | 2005-10-06 | K.U. Leuven Research & Development, Gerhard Puerstinger And Gilead Sciences, Inc. | Imidazo[4,5-c]pyridine compounds and methods of antiviral treatment |
DE602005013580D1 (de) | 2004-12-21 | 2009-05-07 | Leuven K U Res & Dev | Imidazoä4,5-cüpyridinverbindung und verfahren zur antiviralen behandlung |
AU2007269614B2 (en) | 2006-07-07 | 2011-09-08 | Gilead Sciences, Inc. | Novel pyridazine compound and use thereof |
UA99466C2 (en) | 2007-07-06 | 2012-08-27 | Гилиад Сайенсиз, Инк. | Crystalline pyridazine compound |
CA2725657A1 (en) * | 2008-06-18 | 2009-12-23 | F. Hoffmann-La Roche Ag | Novel heteroaryl carboxamide derivatives |
DE112010005848B4 (de) * | 2010-09-06 | 2016-03-10 | Guangzhou Institutes Of Biomedicine And Health, Chinese Academy Of Sciences | Amidverbindungen |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2739152A (en) * | 1953-10-23 | 1956-03-20 | Searle & Co | Dialkylaminoalkyl esters of diarylisonicotinic acids |
GB950872A (en) * | 1961-03-17 | 1964-02-26 | Soc Ind Fab Antibiotiques Sifa | Substituted pyridyl-ethyl-piperazines |
DE1670827C3 (de) * | 1967-03-20 | 1974-10-24 | Bayer Ag, 5090 Leverkusen | 4-(2'-Nitrophenyl)-2,6-dimethyl-3,5-dicarbmethoxy-1,4-dihydropyridin |
DE2741260A1 (de) * | 1977-09-14 | 1979-03-22 | Bayer Ag | Neue 1,4-dihydropyridazine, verfahren zu ihrer herstellung sowie ihre verwendung als arzneimittel |
DE2745496A1 (de) * | 1977-10-10 | 1979-05-17 | Bayer Ag | Neue 1-n-substituierte 1.4-dihydropyridazine, verfahren zu ihrer herstellung sowie ihre verwendung als arzneimittel |
DE2834624A1 (de) * | 1978-08-08 | 1980-02-28 | Bayer Ag | Neue 1,4-dihydropyridazin-3-carbonsaeurederivate, verfahren zu ihrer herstellung und verwendung als arzneimittel |
FR2522325B1 (fr) * | 1982-02-26 | 1985-08-09 | Delalande Sa | Nouveaux derives aryliques de la piperazine, de l'homopiperazine et de n,n'-dialkyl diamino-1,2 ethane, leur procede de preparation et leur application en therapeutique |
DE3209276A1 (de) * | 1982-03-13 | 1983-09-15 | Bayer Ag, 5090 Leverkusen | Arzneimittel mit antihypoxischer und ischaemie-protektiver wirkung |
DE3209274A1 (de) * | 1982-03-13 | 1983-09-15 | Bayer Ag, 5090 Leverkusen | Pyridincarbonsaeureester, verfahren zu ihrer herstellung sowie ihre verwendung als arzneimittel |
FR2543139B1 (fr) * | 1983-03-22 | 1985-08-16 | Cerm Cent Europ Rech Mauvernay | Derives de (1-alcoxy 2-amino) ethyl pyridine ou pyrazine, leur preparation et leur application en therapeutique |
IT1200928B (it) * | 1983-07-11 | 1989-01-27 | Malesci Sas | Procedimento per la preparazione di 1-piridil-alchil-4-aril piperazine utili per la loro attivita' antiipertensiva,lloro separazione nei relativi antipodi ottici e composti stereoisomeri cosi' ottenuti |
US4603135A (en) * | 1983-10-17 | 1986-07-29 | Takeda Chemical Industries, Ltd. | Substituted piperazinyl alkyl esters of 2-amino-4-aryl-1,4-dihydro-6-alkyl-3,5-pyridinedicarboxylates |
US4698340A (en) * | 1984-07-19 | 1987-10-06 | Fujisawa Pharmaceutical Co., Ltd. | Pyrimidine derivatives, processes for preparation thereof and composition containing the same |
US4727073A (en) * | 1984-10-01 | 1988-02-23 | Fujisawa Pharmaceutical Co., Ltd. | Pyrimidine derivatives and composition of the same |
US4857527A (en) * | 1985-12-12 | 1989-08-15 | Fujisawa Pharmaceutical Co., Ltd. | Morpholine containing pyridine compounds, compositions and use |
GB8530602D0 (en) * | 1985-12-12 | 1986-01-22 | Fujisawa Pharmaceutical Co | Heterocyclic compounds |
-
1985
- 1985-12-12 GB GB858530602A patent/GB8530602D0/en active Pending
-
1986
- 1986-12-11 EP EP86309657A patent/EP0228845B1/de not_active Expired - Lifetime
- 1986-12-11 ES ES198686309657T patent/ES2037665T3/es not_active Expired - Lifetime
- 1986-12-11 DE DE8686309657T patent/DE3676179D1/de not_active Expired - Fee Related
- 1986-12-11 AT AT86309657T patent/ATE59033T1/de not_active IP Right Cessation
- 1986-12-12 US US06/940,923 patent/US4831030A/en not_active Expired - Fee Related
- 1986-12-12 JP JP61297227A patent/JPH0739391B2/ja not_active Expired - Lifetime
-
1988
- 1988-12-19 US US07/286,169 patent/US4931453A/en not_active Expired - Fee Related
-
1991
- 1991-02-26 GR GR90401044T patent/GR3001506T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
JPS62149662A (ja) | 1987-07-03 |
EP0228845A3 (en) | 1989-02-22 |
DE3676179D1 (de) | 1991-01-24 |
ES2037665T3 (es) | 1993-07-01 |
GR3001506T3 (en) | 1992-11-23 |
JPH0739391B2 (ja) | 1995-05-01 |
GB8530602D0 (en) | 1986-01-22 |
EP0228845A2 (de) | 1987-07-15 |
EP0228845B1 (de) | 1990-12-12 |
US4831030A (en) | 1989-05-16 |
US4931453A (en) | 1990-06-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |