EA199700296A1 - ПРОИЗВОДНЫЕ 5Н,10Н-ИМИДАЗО[1,2-a]ИНДЕНО[1,2-e]ПИРАЗИН-4-ОНА, СПОСОБЫ ИХ ПОЛУЧЕНИЯ, СОДЕРЖАЩЕЕ ИХ ЛЕКАРСТВЕННОЕ СРЕДСТВО И СОЕДИНЕНИЯ - ПРОИЗВОДНЫЕ ИНДАНОНА - Google Patents
ПРОИЗВОДНЫЕ 5Н,10Н-ИМИДАЗО[1,2-a]ИНДЕНО[1,2-e]ПИРАЗИН-4-ОНА, СПОСОБЫ ИХ ПОЛУЧЕНИЯ, СОДЕРЖАЩЕЕ ИХ ЛЕКАРСТВЕННОЕ СРЕДСТВО И СОЕДИНЕНИЯ - ПРОИЗВОДНЫЕ ИНДАНОНАInfo
- Publication number
- EA199700296A1 EA199700296A1 EA199700296A EA199700296A EA199700296A1 EA 199700296 A1 EA199700296 A1 EA 199700296A1 EA 199700296 A EA199700296 A EA 199700296A EA 199700296 A EA199700296 A EA 199700296A EA 199700296 A1 EA199700296 A1 EA 199700296A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- indeno
- imidazo
- derivatives
- receptor
- alk
- Prior art date
Links
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 abstract 2
- 102000004868 N-Methyl-D-Aspartate Receptors Human genes 0.000 abstract 2
- 108090001041 N-Methyl-D-Aspartate Receptors Proteins 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- CSHJCESYHRWFCE-UHFFFAOYSA-N 2-amino-3-hydroxy-2-(5-methyl-1,2-oxazol-4-yl)propanoic acid Chemical compound CC=1ON=CC=1C(N)(CO)C(O)=O CSHJCESYHRWFCE-UHFFFAOYSA-N 0.000 abstract 1
- 102100036009 5'-AMP-activated protein kinase catalytic subunit alpha-2 Human genes 0.000 abstract 1
- AQQPIVYLMVOXNA-UHFFFAOYSA-N 5h,10h-imidazo-[1,2-a]indeno[1,2-e]pyrazin-4-one Chemical class C1=CC=C2C(NC(C3=NC=CN33)=O)=C3CC2=C1 AQQPIVYLMVOXNA-UHFFFAOYSA-N 0.000 abstract 1
- 102000003678 AMPA Receptors Human genes 0.000 abstract 1
- 108090000078 AMPA Receptors Proteins 0.000 abstract 1
- 239000004471 Glycine Substances 0.000 abstract 1
- 101000783681 Homo sapiens 5'-AMP-activated protein kinase catalytic subunit alpha-2 Proteins 0.000 abstract 1
- HOKKHZGPKSLGJE-GSVOUGTGSA-N N-Methyl-D-aspartic acid Chemical compound CN[C@@H](C(O)=O)CC(O)=O HOKKHZGPKSLGJE-GSVOUGTGSA-N 0.000 abstract 1
- 125000004453 alkoxycarbonyl group Chemical group 0.000 abstract 1
- 239000005557 antagonist Substances 0.000 abstract 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 1
- 239000003446 ligand Substances 0.000 abstract 1
- 230000036963 noncompetitive effect Effects 0.000 abstract 1
- 230000000144 pharmacologic effect Effects 0.000 abstract 1
- 239000002464 receptor antagonist Substances 0.000 abstract 1
- 229940044551 receptor antagonist Drugs 0.000 abstract 1
- 102000005962 receptors Human genes 0.000 abstract 1
- 108020003175 receptors Proteins 0.000 abstract 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/14—Prodigestives, e.g. acids, enzymes, appetite stimulants, antidyspeptics, tonics, antiflatulents
-
- 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
-
- 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
- A61P25/04—Centrally acting analgesics, e.g. opioids
-
- 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
- A61P25/08—Antiepileptics; Anticonvulsants
-
- 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
- A61P25/18—Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
-
- 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
- A61P25/20—Hypnotics; Sedatives
-
- 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
- A61P25/24—Antidepressants
-
- 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
- A61P25/26—Psychostimulants, e.g. nicotine, cocaine
-
- 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
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/02—Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
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- 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
-
- 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
- A61P9/08—Vasodilators for multiple indications
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- 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
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two 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
- C07D233/90—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/645—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having two nitrogen atoms as the only ring hetero atoms
- C07F9/6503—Five-membered rings
- C07F9/6506—Five-membered rings having the nitrogen atoms in positions 1 and 3
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6561—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom containing systems of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring or ring system, with or without other non-condensed hetero rings
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Public Health (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Veterinary Medicine (AREA)
- Pharmacology & Pharmacy (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- Psychiatry (AREA)
- Molecular Biology (AREA)
- Diabetes (AREA)
- Pain & Pain Management (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Hematology (AREA)
- Obesity (AREA)
- Oncology (AREA)
- Communicable Diseases (AREA)
- Emergency Medicine (AREA)
- Addiction (AREA)
- Vascular Medicine (AREA)
- Hospice & Palliative Care (AREA)
- Urology & Nephrology (AREA)
- Anesthesiology (AREA)
- Rheumatology (AREA)
- Nutrition Science (AREA)
- Endocrinology (AREA)
- Virology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Изобретение относится к производным 5H,10H-имидазо[1,2-a]индено[1,2-e]пиразин-4-она формулы (I)в которой R означает атом водорода или карбоксил, алкоксикарбонил, радикал -CO-NRR, -POHили -CHOH; и Rозначает радикал -алк-NH, -алк-NH-CO-R, -алк-CO-NRRили -CO-NH-R. Соединения формулы (I) обладают интересными фармакологическими свойствами. Так, они являются антагонистами к рецептору a-амино-3-гидрокси-5-метил-4-изоксазолпропионовой кислоты (АМПК), известного также под названием рецептора квисквалата. Кроме того, соединения формулы (I) являются неконкурентными антагонистами к рецептору N-метил-D-аспартата (NMDA) и, более предпочтительно, они являются лигандами модуляторных сайтов глицина рецептора NMDA.Международная заявка была опубликована вместе с отчетом о международном поиске.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9504013A FR2732681B1 (fr) | 1995-04-05 | 1995-04-05 | Derives de 10h-imidazo(1,2-a)indeno(1,2-e)pyrazin-4-one, leur preparation et les medicaments les contenant |
| PCT/FR1996/000496 WO1996031511A1 (fr) | 1995-04-05 | 1996-04-02 | DERIVES DE 5H,10H-IMIDAZO[1,2-a]INDENO[1,2-e]PYRAZIN-4-ONE, LEUR PREPARATION ET LES MEDICAMENTS LES CONTENANT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA199700296A1 true EA199700296A1 (ru) | 1998-04-30 |
| EA000218B1 EA000218B1 (ru) | 1998-12-24 |
Family
ID=9477764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA199700296A EA000218B1 (ru) | 1995-04-05 | 1996-04-02 | ПРОИЗВОДНЫЕ 5Н,10Н-ИМИДАЗО[1,2-а]ИНДЕНО[1,2-e]ПИРАЗИН-4-ОНА, СПОСОБЫ ИХ ПОЛУЧЕНИЯ, СОДЕРЖАЩЕЕ ИХ ЛЕКАРСТВЕННОЕ СРЕДСТВО И ПРОИЗВОДНЫЕ ИНДАНОНА В КАЧЕСТВЕ ПРОМЕЖУТОЧНЫХ ПРОДУКТОВ |
Country Status (27)
| Country | Link |
|---|---|
| US (2) | US5902803A (ru) |
| EP (1) | EP0820455B1 (ru) |
| JP (1) | JP4014221B2 (ru) |
| KR (1) | KR19980703550A (ru) |
| CN (1) | CN1063180C (ru) |
| AR (1) | AR002983A1 (ru) |
| AT (1) | ATE207923T1 (ru) |
| AU (1) | AU705471B2 (ru) |
| BG (1) | BG62970B1 (ru) |
| CA (1) | CA2215469A1 (ru) |
| CZ (1) | CZ285797B6 (ru) |
| DE (1) | DE69616532T2 (ru) |
| DK (1) | DK0820455T3 (ru) |
| EA (1) | EA000218B1 (ru) |
| ES (1) | ES2166441T3 (ru) |
| FR (1) | FR2732681B1 (ru) |
| HU (1) | HUP9801716A3 (ru) |
| IL (1) | IL117759A (ru) |
| MX (1) | MX9707528A (ru) |
| NO (1) | NO309480B1 (ru) |
| NZ (1) | NZ305899A (ru) |
| PL (1) | PL322621A1 (ru) |
| PT (1) | PT820455E (ru) |
| SK (1) | SK281274B6 (ru) |
| TW (1) | TW492969B (ru) |
| WO (1) | WO1996031511A1 (ru) |
| ZA (1) | ZA962771B (ru) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2743366B1 (fr) * | 1996-01-10 | 1998-02-06 | Rhone Poulenc Rorer Sa | Derives de 5h,10h-imidazo(1,2-a)indeno(1,2-e)pyrazine-4-one, leur preparation, leurs intermediaires et les medicaments les contenant |
| WO2008088820A2 (en) * | 2007-01-16 | 2008-07-24 | The Johns Hopkins University | Glutamate receptor antagonists and methods of use |
| MA49014A (fr) * | 2017-03-21 | 2020-02-05 | Arbutus Biopharma Corp | Dihydroindène-4-carboxamides substitués, leurs analogues et procédés d'utilisation correspondant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2696466B1 (fr) * | 1992-10-02 | 1994-11-25 | Rhone Poulenc Rorer Sa | Dérivés de 5H,10H-imidazo[1,2-a]indeno[1,2-e]pyrazine-4-one, leur préparation et les médicaments les contenant. |
-
1995
- 1995-04-05 FR FR9504013A patent/FR2732681B1/fr not_active Expired - Fee Related
-
1996
- 1996-04-01 IL IL11775996A patent/IL117759A/xx active IP Right Grant
- 1996-04-02 AT AT96911018T patent/ATE207923T1/de not_active IP Right Cessation
- 1996-04-02 EP EP96911018A patent/EP0820455B1/fr not_active Expired - Lifetime
- 1996-04-02 US US08/930,967 patent/US5902803A/en not_active Expired - Fee Related
- 1996-04-02 HU HU9801716A patent/HUP9801716A3/hu unknown
- 1996-04-02 AU AU54029/96A patent/AU705471B2/en not_active Ceased
- 1996-04-02 PL PL96322621A patent/PL322621A1/xx unknown
- 1996-04-02 WO PCT/FR1996/000496 patent/WO1996031511A1/fr not_active Application Discontinuation
- 1996-04-02 DK DK96911018T patent/DK0820455T3/da active
- 1996-04-02 DE DE69616532T patent/DE69616532T2/de not_active Expired - Fee Related
- 1996-04-02 CN CN96193049A patent/CN1063180C/zh not_active Expired - Fee Related
- 1996-04-02 JP JP53003196A patent/JP4014221B2/ja not_active Expired - Fee Related
- 1996-04-02 KR KR1019970706954A patent/KR19980703550A/ko not_active Application Discontinuation
- 1996-04-02 EA EA199700296A patent/EA000218B1/ru not_active IP Right Cessation
- 1996-04-02 CZ CZ973140A patent/CZ285797B6/cs not_active IP Right Cessation
- 1996-04-02 MX MX9707528A patent/MX9707528A/es not_active IP Right Cessation
- 1996-04-02 TW TW085103863A patent/TW492969B/zh not_active IP Right Cessation
- 1996-04-02 SK SK1337-97A patent/SK281274B6/sk unknown
- 1996-04-02 PT PT96911018T patent/PT820455E/pt unknown
- 1996-04-02 ES ES96911018T patent/ES2166441T3/es not_active Expired - Lifetime
- 1996-04-02 NZ NZ305899A patent/NZ305899A/en unknown
- 1996-04-02 CA CA002215469A patent/CA2215469A1/fr not_active Abandoned
- 1996-04-03 AR ARP960102047A patent/AR002983A1/es unknown
- 1996-04-04 ZA ZA962771A patent/ZA962771B/xx unknown
-
1997
- 1997-10-03 BG BG101941A patent/BG62970B1/bg unknown
- 1997-10-03 NO NO974579A patent/NO309480B1/no not_active IP Right Cessation
-
1998
- 1998-12-04 US US09/205,689 patent/US6057454A/en not_active Expired - Fee Related
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