NL193375C - Werkwijze voor het bereiden van chinolinecarbonzuurderivaten. - Google Patents
Werkwijze voor het bereiden van chinolinecarbonzuurderivaten. Download PDFInfo
- Publication number
- NL193375C NL193375C NL8103679A NL8103679A NL193375C NL 193375 C NL193375 C NL 193375C NL 8103679 A NL8103679 A NL 8103679A NL 8103679 A NL8103679 A NL 8103679A NL 193375 C NL193375 C NL 193375C
- Authority
- NL
- Netherlands
- Prior art keywords
- dihydroquinoline
- oxo
- fluoro
- carboxylic acid
- mixture
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title description 3
- LOAUVZALPPNFOQ-UHFFFAOYSA-N quinaldic acid Chemical class C1=CC=CC2=NC(C(=O)O)=CC=C21 LOAUVZALPPNFOQ-UHFFFAOYSA-N 0.000 title description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 28
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 21
- 239000000203 mixture Substances 0.000 description 21
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 14
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 11
- 239000011541 reaction mixture Substances 0.000 description 11
- 239000013078 crystal Substances 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- -1 1-piperazinyl Chemical group 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- NGBZZCXZVDYZQK-UHFFFAOYSA-N ethyl 7-chloro-1-ethyl-6-fluoro-4-oxoquinoline-3-carboxylate Chemical compound ClC1=C(F)C=C2C(=O)C(C(=O)OCC)=CN(CC)C2=C1 NGBZZCXZVDYZQK-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 125000004494 ethyl ester group Chemical class 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 239000000543 intermediate Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000004599 antimicrobial Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- PVOAHINGSUIXLS-UHFFFAOYSA-N 1-Methylpiperazine Chemical compound CN1CCNCC1 PVOAHINGSUIXLS-UHFFFAOYSA-N 0.000 description 3
- 229960000583 acetic acid Drugs 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- OGJPXUAPXNRGGI-UHFFFAOYSA-N norfloxacin Chemical compound C1=C2N(CC)C=C(C(O)=O)C(=O)C2=CC(F)=C1N1CCNCC1 OGJPXUAPXNRGGI-UHFFFAOYSA-N 0.000 description 3
- 150000007530 organic bases Chemical class 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 2
- WKZAVCCKKJQNCJ-UHFFFAOYSA-N ethyl 1-ethyl-6-fluoro-4-oxo-7-piperazin-1-ylquinoline-3-carboxylate Chemical compound FC=1C=C2C(=O)C(C(=O)OCC)=CN(CC)C2=CC=1N1CCNCC1 WKZAVCCKKJQNCJ-UHFFFAOYSA-N 0.000 description 2
- JWPRIAJLGCOFGB-UHFFFAOYSA-N ethyl 7-chloro-1-ethenyl-6-fluoro-4-oxoquinoline-3-carboxylate Chemical compound ClC1=C(F)C=C2C(=O)C(C(=O)OCC)=CN(C=C)C2=C1 JWPRIAJLGCOFGB-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012454 non-polar solvent Substances 0.000 description 2
- FHFYDNQZQSQIAI-UHFFFAOYSA-N pefloxacin Chemical compound C1=C2N(CC)C=C(C(O)=O)C(=O)C2=CC(F)=C1N1CCN(C)CC1 FHFYDNQZQSQIAI-UHFFFAOYSA-N 0.000 description 2
- 150000004885 piperazines Chemical class 0.000 description 2
- 125000004193 piperazinyl group Chemical group 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- QWZUEICJMSHADB-UHFFFAOYSA-N 1-ethenyl-6-fluoro-4-oxo-7-piperazin-1-ylquinoline-3-carboxylic acid Chemical compound FC=1C=C2C(=O)C(C(=O)O)=CN(C=C)C2=CC=1N1CCNCC1 QWZUEICJMSHADB-UHFFFAOYSA-N 0.000 description 1
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 229940125898 compound 5 Drugs 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- GHBUOTIRANXFEE-UHFFFAOYSA-N ethyl 1,4-dihydroquinoline-3-carboxylate Chemical compound C1=CC=C2CC(C(=O)OCC)=CNC2=C1 GHBUOTIRANXFEE-UHFFFAOYSA-N 0.000 description 1
- YRLKLVXUUVUYEX-UHFFFAOYSA-N ethyl 1-ethenyl-6-fluoro-4-oxo-7-piperazin-1-ylquinoline-3-carboxylate Chemical compound FC=1C=C2C(=O)C(C(=O)OCC)=CN(C=C)C2=CC=1N1CCNCC1 YRLKLVXUUVUYEX-UHFFFAOYSA-N 0.000 description 1
- UHMIZGMPVHLGRB-UHFFFAOYSA-N ethyl 1-ethenyl-6-fluoro-7-(4-methylpiperazin-1-yl)-4-oxoquinoline-3-carboxylate Chemical compound FC=1C=C2C(=O)C(C(=O)OCC)=CN(C=C)C2=CC=1N1CCN(C)CC1 UHMIZGMPVHLGRB-UHFFFAOYSA-N 0.000 description 1
- FEGDMGCSHVIWNR-UHFFFAOYSA-N ethyl 1-ethyl-6-fluoro-7-(4-methylpiperazin-1-yl)-4-oxoquinoline-3-carboxylate Chemical compound FC=1C=C2C(=O)C(C(=O)OCC)=CN(CC)C2=CC=1N1CCN(C)CC1 FEGDMGCSHVIWNR-UHFFFAOYSA-N 0.000 description 1
- SFYVJPZGSRGEPE-UHFFFAOYSA-N ethyl 7-chloro-1-(2-chloroethyl)-6-fluoro-4-oxoquinoline-3-carboxylate Chemical compound ClC1=C(F)C=C2C(=O)C(C(=O)OCC)=CN(CCCl)C2=C1 SFYVJPZGSRGEPE-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- MECQXLLOIWHERD-UHFFFAOYSA-N methyl 1-ethyl-6-fluoro-4-oxo-7-piperazin-1-ylquinoline-3-carboxylate Chemical compound C1=C2N(CC)C=C(C(=O)OC)C(=O)C2=CC(F)=C1N1CCNCC1 MECQXLLOIWHERD-UHFFFAOYSA-N 0.000 description 1
- FMJAJQBEYGGCTP-UHFFFAOYSA-N methyl 7-chloro-1-ethyl-6-fluoro-4-oxoquinoline-3-carboxylate Chemical compound FC1=C(Cl)C=C2N(CC)C=C(C(=O)OC)C(=O)C2=C1 FMJAJQBEYGGCTP-UHFFFAOYSA-N 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013014 purified material Substances 0.000 description 1
- DJXNJVFEFSWHLY-UHFFFAOYSA-N quinoline-3-carboxylic acid Chemical class C1=CC=CC2=CC(C(=O)O)=CN=C21 DJXNJVFEFSWHLY-UHFFFAOYSA-N 0.000 description 1
- 229940066771 systemic antihistamines piperazine derivative Drugs 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms 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
- C07D215/48—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
- C07D215/54—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3
- C07D215/56—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3 with oxygen atoms in position 4
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Quinoline Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55123024A JPS5762259A (en) | 1980-09-05 | 1980-09-05 | Preparation of substituted quinolinecarboxylic acid derivative |
| JP12302480 | 1980-09-05 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL8103679A NL8103679A (nl) | 1982-04-01 |
| NL193375B NL193375B (nl) | 1999-04-01 |
| NL193375C true NL193375C (nl) | 1999-08-03 |
Family
ID=14850324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8103679A NL193375C (nl) | 1980-09-05 | 1981-08-04 | Werkwijze voor het bereiden van chinolinecarbonzuurderivaten. |
Country Status (29)
| Country | Link |
|---|---|
| US (1) | US4472579A (en, 2012) |
| JP (1) | JPS5762259A (en, 2012) |
| KR (1) | KR870001944B1 (en, 2012) |
| AR (1) | AR226917A1 (en, 2012) |
| AT (1) | AT380009B (en, 2012) |
| AU (1) | AU540205B2 (en, 2012) |
| BE (1) | BE890223A (en, 2012) |
| CA (1) | CA1214466A (en, 2012) |
| CH (1) | CH646697A5 (en, 2012) |
| DE (1) | DE3135125A1 (en, 2012) |
| DK (1) | DK154763C (en, 2012) |
| ES (2) | ES505207A0 (en, 2012) |
| FI (1) | FI77854C (en, 2012) |
| FR (1) | FR2489821B1 (en, 2012) |
| GB (1) | GB2085875B (en, 2012) |
| GR (1) | GR74304B (en, 2012) |
| HU (1) | HU187356B (en, 2012) |
| IE (1) | IE51540B1 (en, 2012) |
| IN (1) | IN155106B (en, 2012) |
| IT (1) | IT1168168B (en, 2012) |
| LU (1) | LU83609A1 (en, 2012) |
| MX (1) | MX7101E (en, 2012) |
| NL (1) | NL193375C (en, 2012) |
| NO (1) | NO157699C (en, 2012) |
| NZ (1) | NZ198295A (en, 2012) |
| PH (1) | PH17837A (en, 2012) |
| PT (1) | PT73571B (en, 2012) |
| SE (1) | SE442402B (en, 2012) |
| ZA (1) | ZA815207B (en, 2012) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3142854A1 (de) * | 1981-10-29 | 1983-05-11 | Bayer Ag, 5090 Leverkusen | 1-cyclopropyl-6-fluor-1,4-dihydro-4-oxo-7-piperazino-chinolin-3-carbonsaeuren, verfahren zu ihrer herstellung sowie diese enthaltende antibakterielle mittel |
| US4670444B1 (en) * | 1980-09-03 | 1999-02-09 | Bayer Ag | and-naphthyridine-3-carboxylic acids and antibacte7-amino-1-cyclopropyl-4-oxo-1,4-dihydro-quinoline-rial agents containing these compounds |
| JPS59122470A (ja) * | 1982-12-27 | 1984-07-14 | Dai Ichi Seiyaku Co Ltd | キノリン−３−カルボン酸誘導体の製造法 |
| DE3306771A1 (de) * | 1983-02-25 | 1984-08-30 | Bayer Ag, 5090 Leverkusen | Chinoloncarbonsaeuren, verfahren zu ihrer herstellung sowie diese enthaltende antibakterielle mittel |
| DE3318145A1 (de) * | 1983-05-18 | 1984-11-22 | Bayer Ag, 5090 Leverkusen | 7-amino-1-cyclopropyl-6,8-difluor-1,4-dihydro-4-oxo-3-chinolincarbonsaeuren, verfahren zu ihrer herstellung sowie diese enthaltende antibakterielle mittel |
| AU553415B2 (en) * | 1983-09-19 | 1986-07-17 | Abbott Japan Co., Ltd. | 6-fluoro-1-4-dihydro-4-oxo-7-substituted piperazinyl- quinoline-3-carboxylic acids |
| DE3504643A1 (de) * | 1985-02-12 | 1986-08-14 | Bayer Ag, 5090 Leverkusen | 1-cyclopropyl-1,4-dihydro-4-oxo-7-(4-(2-oxo-1,3-dioxol-4-yl-methyl)-1-piperazinyl)-3-chinolin carbonsaeuren, verfahren zu ihrer herstellung sowie diese enthaltende antibakterielle mittel |
| HUT40429A (en) * | 1985-04-29 | 1986-12-28 | Chinoin Gyogyszer Es Vegyeszet | Process for production of salts of derivatives of kynolin carbonic acid |
| DE3525108A1 (de) * | 1985-06-07 | 1986-12-11 | Bayer Ag, 5090 Leverkusen | Antibakteriell wirksame chinoloncarbonsaeureester |
| DE3525335A1 (de) * | 1985-07-16 | 1987-01-22 | Bayer Ag | Embonate von chinoloncarbonsaeuren und ihren derivaten |
| DE3542002A1 (de) * | 1985-11-28 | 1987-06-04 | Bayer Ag | 1-cyclopropyl-6-fluor-1,4-dihydro-4-oxo-7- (1-piperazinyl)-3-chinolincarbonsaeuren, verfahren zu ihrer herstellung sowie diese enthaltende antibakterielle mittel |
| HU196218B (en) | 1985-12-09 | 1988-10-28 | Chinoin Gyogyszer Es Vegyeszet | Process for preparing quinoline carboxylic acid boric acid anhydrides |
| CA1306750C (en) | 1985-12-09 | 1992-08-25 | Istvan Hermecz | Process for the preparation of quinoline carboxylic acide |
| SI8712447A8 (en) * | 1987-12-31 | 1995-12-31 | Krka Tovarna Zdravil | Process for preparing 1-substituted 6-fluoro-4-oxo-7-(1-piperazinyl) -1,4-dihydroquinoline-3-carboxylic acid and new intermediate used in this process |
| SI9200377A (en) | 1992-12-11 | 1994-06-30 | Krka | Process for the preparation of 1-substituted 6-fluoro-4-oxo-7-(1-piperazinyl)-1,4-dihydroquinoline-3-carboxilic acid, novel intermediate used in this process and process for its preparation |
| US6584615B1 (en) * | 1998-11-06 | 2003-07-01 | Mission Hockey Company | Asymmetrical hockey glove system with articulated locking thumb |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2504875A (en) * | 1945-06-04 | 1950-04-18 | Us Sec War | Method for producing 4-hydroxyquinolines |
| US4017622A (en) * | 1972-12-18 | 1977-04-12 | Dainippon Pharmaceutical Co., Ltd. | Piperazine derivatives |
| FI311974A7 (en, 2012) * | 1973-10-26 | 1975-04-27 | Dainippon Pharmaceutical Co | |
| JPS5732059B2 (en, 2012) * | 1974-02-09 | 1982-07-08 | ||
| JPS53141286A (en) * | 1977-05-16 | 1978-12-08 | Kyorin Seiyaku Kk | Novel substituted quinolinecarboxylic acid |
| JPS5466686A (en) * | 1977-09-20 | 1979-05-29 | Dainippon Pharmaceut Co Ltd | Quinoline-3-carboxylic acid derivative, its preparation, and pharmaceutical composition containig the same |
| CA1175836A (en) * | 1977-09-20 | 1984-10-09 | Marcel Pesson | Production of 1,4-dihydroquinoline-3-carboxylic acid derivatives |
| JPS54141286A (en) * | 1978-04-14 | 1979-11-02 | Matsuo Kogyo | Spool detachable system in spinning reel for fishing |
| JPS54138582A (en) * | 1978-04-19 | 1979-10-27 | Kyorin Seiyaku Kk | Substituted quinolinecarboxylic acid |
| JPS5540656A (en) * | 1978-09-19 | 1980-03-22 | Kyorin Pharmaceut Co Ltd | Substituted quinoline-carboxylic acid derivative |
| JPS5845426B2 (ja) * | 1978-09-29 | 1983-10-08 | 杏林製薬株式会社 | 置換キノリンカルボン酸誘導体 |
-
1980
- 1980-09-05 JP JP55123024A patent/JPS5762259A/ja active Granted
-
1981
- 1981-07-22 GR GR65585A patent/GR74304B/el unknown
- 1981-07-29 ZA ZA815207A patent/ZA815207B/xx unknown
- 1981-07-29 CH CH490981A patent/CH646697A5/de not_active IP Right Cessation
- 1981-07-30 IN IN855/CAL/81A patent/IN155106B/en unknown
- 1981-08-04 NL NL8103679A patent/NL193375C/nl not_active IP Right Cessation
- 1981-08-07 NO NO812686A patent/NO157699C/no unknown
- 1981-08-17 AT AT0358881A patent/AT380009B/de not_active IP Right Cessation
- 1981-08-17 FI FI812538A patent/FI77854C/fi not_active IP Right Cessation
- 1981-08-25 AU AU74611/81A patent/AU540205B2/en not_active Expired
- 1981-08-26 PT PT73571A patent/PT73571B/pt unknown
- 1981-08-27 DK DK380681A patent/DK154763C/da not_active IP Right Cessation
- 1981-08-28 SE SE8105102A patent/SE442402B/sv not_active IP Right Cessation
- 1981-08-31 US US06/298,333 patent/US4472579A/en not_active Expired - Lifetime
- 1981-09-01 GB GB8126513A patent/GB2085875B/en not_active Expired
- 1981-09-02 MX MX819646A patent/MX7101E/es unknown
- 1981-09-02 IE IE2028/81A patent/IE51540B1/en not_active IP Right Cessation
- 1981-09-02 AR AR286620A patent/AR226917A1/es active
- 1981-09-03 HU HU812549A patent/HU187356B/hu unknown
- 1981-09-04 IT IT23799/81A patent/IT1168168B/it active Protection Beyond IP Right Term
- 1981-09-04 CA CA000385201A patent/CA1214466A/en not_active Expired
- 1981-09-04 ES ES505207A patent/ES505207A0/es active Granted
- 1981-09-04 DE DE19813135125 patent/DE3135125A1/de active Granted
- 1981-09-04 FR FR8116886A patent/FR2489821B1/fr not_active Expired
- 1981-09-04 BE BE2/59340A patent/BE890223A/fr not_active IP Right Cessation
- 1981-09-05 KR KR1019810003314A patent/KR870001944B1/ko not_active Expired
- 1981-09-07 PH PH26158A patent/PH17837A/en unknown
- 1981-09-07 NZ NZ198295A patent/NZ198295A/en unknown
- 1981-09-07 LU LU83609A patent/LU83609A1/fr unknown
-
1982
- 1982-08-03 ES ES514699A patent/ES8305752A1/es not_active Expired
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