DE4024836C2 - - Google Patents
Info
- Publication number
- DE4024836C2 DE4024836C2 DE4024836A DE4024836A DE4024836C2 DE 4024836 C2 DE4024836 C2 DE 4024836C2 DE 4024836 A DE4024836 A DE 4024836A DE 4024836 A DE4024836 A DE 4024836A DE 4024836 C2 DE4024836 C2 DE 4024836C2
- Authority
- DE
- Germany
- Prior art keywords
- racemic
- esters
- alcohol
- acids
- acid
- 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
- 150000002148 esters Chemical class 0.000 claims abstract description 12
- 230000007062 hydrolysis Effects 0.000 claims abstract description 5
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 5
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric Acid Chemical compound [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000006340 racemization Effects 0.000 claims abstract 4
- 230000032050 esterification Effects 0.000 claims abstract 2
- 238000005886 esterification reaction Methods 0.000 claims abstract 2
- 238000005907 ketalization reaction Methods 0.000 claims abstract 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 150000007513 acids Chemical class 0.000 claims description 8
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000012429 reaction media Substances 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 150000002905 orthoesters Chemical class 0.000 claims 1
- WATQNARHYZXAGY-UHFFFAOYSA-N 3-oxocyclohexane-1-carboxylic acid Chemical class OC(=O)C1CCCC(=O)C1 WATQNARHYZXAGY-UHFFFAOYSA-N 0.000 abstract description 5
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- -1 orthoformic acid ester Chemical class 0.000 abstract description 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- PYOKUURKVVELLB-UHFFFAOYSA-N trimethyl orthoformate Chemical compound COC(OC)OC PYOKUURKVVELLB-UHFFFAOYSA-N 0.000 description 4
- 150000001735 carboxylic acids Chemical class 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- QCZZSANNLWPGEA-UHFFFAOYSA-N 1-(4-phenylphenyl)ethanone Chemical compound C1=CC(C(=O)C)=CC=C1C1=CC=CC=C1 QCZZSANNLWPGEA-UHFFFAOYSA-N 0.000 description 1
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 150000004715 keto acids Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- KTGCFXSELRVRFH-UHFFFAOYSA-N methyl 3-oxocyclopentane-1-carboxylate Chemical compound COC(=O)C1CCC(=O)C1 KTGCFXSELRVRFH-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- KJIFKLIQANRMOU-UHFFFAOYSA-N oxidanium;4-methylbenzenesulfonate Chemical compound O.CC1=CC=C(S(O)(=O)=O)C=C1 KJIFKLIQANRMOU-UHFFFAOYSA-N 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C62/00—Compounds having carboxyl groups bound to carbon atoms of rings other than six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C62/18—Saturated compounds containing keto groups
- C07C62/24—Saturated compounds containing keto groups the keto group being part of a ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Priority Applications (19)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4024836A DE4024836A1 (de) | 1990-08-04 | 1990-08-04 | Verfahren zur racemisierung |
| AT91913842T ATE143937T1 (de) | 1990-08-04 | 1991-07-31 | Verfahren zur racemisierung von nichtracemischen 3-oxocyclopentan- bzw. -hexancarbonsäuren oder ihren estern mit c 1-c 6-alkoholen |
| DE59108272T DE59108272D1 (de) | 1990-08-04 | 1991-07-31 | Verfahren zur racemisierung von nichtracemischen 3-oxocyclopentan- bzw. -hexancarbonsäuren oder ihren estern mit c 1-c 6-alkoholen |
| ES91913842T ES2094817T3 (es) | 1990-08-04 | 1991-07-31 | Procedimiento para la racemizacion de acidos 3-oxo-ciclopentano- o 3-oxo-ciclohexano-carboxilicos no racemicos, o de sus esteres con alcoholes c1-c6. |
| EP91913842A EP0549593B1 (de) | 1990-08-04 | 1991-07-31 | Verfahren zur racemisierung von nichtracemischen 3-oxocyclopentan- bzw. -hexancarbonsäuren oder ihren estern mit c 1-c 6-alkoholen |
| DK91913842.0T DK0549593T3 (da) | 1990-08-04 | 1991-07-31 | Fremgangsmåde til racemicering af ikke-racemisk 3-oxocyclopentancarboxylsyre eller hexancarboxylsyre eller estere heraf med C1-C6-alkoholer |
| PL91297847A PL166566B1 (pl) | 1990-08-04 | 1991-07-31 | Sposób racemizacji nieracemicznych kwasów 3-oksocyklopentano- lub 3-oksocy- kloheksanokarboksylowych albo ich estrów z C1 -C6 -alkoholami PL PL PL |
| JP3512767A JP3032987B2 (ja) | 1990-08-04 | 1991-07-31 | 非ラセミの3―オキソシクロペンタンカルボン酸若しくは3―オキソシクロヘキサンカルボン酸又はそれらのc1―c6アルコールとのエステルのラセミ化のための方法 |
| CS93126A CZ281079B6 (cs) | 1990-08-04 | 1991-07-31 | Způsob racemisace neracemických kyselin 3-oxocyklopentan- nebo 3-oxocyklohexankarboxylových nebo jejich esterů s alkoholy o 1 až 6 atomech uhlíku |
| US07/971,775 US5488136A (en) | 1990-08-04 | 1991-07-31 | Process for the racemization of nonracemic 3-oxyocylopentane- or -hexanecarboxylic acids or their esters with C1 -C6 -alcohols |
| AU82915/91A AU645595B2 (en) | 1990-08-04 | 1991-07-31 | Method for racemization of non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids and their esters with C1-C6 alcohols |
| KR1019930700310A KR100190773B1 (ko) | 1990-08-04 | 1991-07-31 | 비라세미성 3- 옥소사이클로펜탄- 또는 3 - 옥소사이클로헥산 카복실산 및 이의c₁-c6 알콜과의 에스테르를 라세미화하는 방법 |
| RU9193005135A RU2058281C1 (ru) | 1990-08-04 | 1991-07-31 | Способ рацемизации нерацемической 3-оксоциклопентан-или-гексанкарбоновой кислоты или ее сложного эфира с низшим алифатическим спиртом |
| HU9300287A HU212610B (en) | 1990-08-04 | 1991-07-31 | Method for racemizing non-racemic 3-oxo-cyclopentane-carboxylic acid or 3-oxo-cyclohexanecarboxylic acid, as well as their esters produced with alcohols containing 1 to 6 carbon atoms |
| PCT/EP1991/001434 WO1992002483A1 (de) | 1990-08-04 | 1991-07-31 | Verfahren zur racemisierung von nichtracemischen 3-oxocyclopentan- bzw. -hexancarbonsäuren oder ihren estern mit c1-c6-alkoholen |
| CA002088774A CA2088774C (en) | 1990-08-04 | 1991-07-31 | Process for the racemization nonracemic 3-oxocyclopentane-or-hexanecarboxylic acids or their esters with c1-c6-alcohols |
| SK51-93A SK280699B6 (sk) | 1990-08-04 | 1993-02-02 | Spôsob racemizácie neracemických 3-oxycyklopentánk |
| NO930383A NO177422C (no) | 1990-08-04 | 1993-02-03 | Fremgangsmåte for racemisering av ikke-racemiske 3-oksocyklopentan- resp. - heksan-karboksylsyrer eller deres estere med C1-C6 alkoholer |
| GR960402743T GR3021370T3 (en) | 1990-08-04 | 1996-10-16 | Method for racemization of non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids and their esters with c 1-c 6 alcohols |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4024836A DE4024836A1 (de) | 1990-08-04 | 1990-08-04 | Verfahren zur racemisierung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE4024836A1 DE4024836A1 (de) | 1992-02-06 |
| DE4024836C2 true DE4024836C2 (enExample) | 1992-07-02 |
Family
ID=6411682
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4024836A Granted DE4024836A1 (de) | 1990-08-04 | 1990-08-04 | Verfahren zur racemisierung |
| DE59108272T Expired - Fee Related DE59108272D1 (de) | 1990-08-04 | 1991-07-31 | Verfahren zur racemisierung von nichtracemischen 3-oxocyclopentan- bzw. -hexancarbonsäuren oder ihren estern mit c 1-c 6-alkoholen |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE59108272T Expired - Fee Related DE59108272D1 (de) | 1990-08-04 | 1991-07-31 | Verfahren zur racemisierung von nichtracemischen 3-oxocyclopentan- bzw. -hexancarbonsäuren oder ihren estern mit c 1-c 6-alkoholen |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US5488136A (enExample) |
| EP (1) | EP0549593B1 (enExample) |
| JP (1) | JP3032987B2 (enExample) |
| KR (1) | KR100190773B1 (enExample) |
| AT (1) | ATE143937T1 (enExample) |
| AU (1) | AU645595B2 (enExample) |
| CA (1) | CA2088774C (enExample) |
| CZ (1) | CZ281079B6 (enExample) |
| DE (2) | DE4024836A1 (enExample) |
| DK (1) | DK0549593T3 (enExample) |
| ES (1) | ES2094817T3 (enExample) |
| GR (1) | GR3021370T3 (enExample) |
| HU (1) | HU212610B (enExample) |
| NO (1) | NO177422C (enExample) |
| PL (1) | PL166566B1 (enExample) |
| RU (1) | RU2058281C1 (enExample) |
| SK (1) | SK280699B6 (enExample) |
| WO (1) | WO1992002483A1 (enExample) |
-
1990
- 1990-08-04 DE DE4024836A patent/DE4024836A1/de active Granted
-
1991
- 1991-07-31 DK DK91913842.0T patent/DK0549593T3/da active
- 1991-07-31 PL PL91297847A patent/PL166566B1/pl not_active IP Right Cessation
- 1991-07-31 DE DE59108272T patent/DE59108272D1/de not_active Expired - Fee Related
- 1991-07-31 WO PCT/EP1991/001434 patent/WO1992002483A1/de not_active Ceased
- 1991-07-31 HU HU9300287A patent/HU212610B/hu not_active IP Right Cessation
- 1991-07-31 KR KR1019930700310A patent/KR100190773B1/ko not_active Expired - Fee Related
- 1991-07-31 EP EP91913842A patent/EP0549593B1/de not_active Expired - Lifetime
- 1991-07-31 CA CA002088774A patent/CA2088774C/en not_active Expired - Fee Related
- 1991-07-31 CZ CS93126A patent/CZ281079B6/cs not_active IP Right Cessation
- 1991-07-31 US US07/971,775 patent/US5488136A/en not_active Expired - Lifetime
- 1991-07-31 AT AT91913842T patent/ATE143937T1/de not_active IP Right Cessation
- 1991-07-31 ES ES91913842T patent/ES2094817T3/es not_active Expired - Lifetime
- 1991-07-31 AU AU82915/91A patent/AU645595B2/en not_active Ceased
- 1991-07-31 RU RU9193005135A patent/RU2058281C1/ru not_active IP Right Cessation
- 1991-07-31 JP JP3512767A patent/JP3032987B2/ja not_active Expired - Fee Related
-
1993
- 1993-02-02 SK SK51-93A patent/SK280699B6/sk unknown
- 1993-02-03 NO NO930383A patent/NO177422C/no unknown
-
1996
- 1996-10-16 GR GR960402743T patent/GR3021370T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK0549593T3 (da) | 1996-11-18 |
| HU9300287D0 (en) | 1993-05-28 |
| CZ12693A3 (en) | 1994-01-19 |
| WO1992002483A1 (de) | 1992-02-20 |
| HU212610B (en) | 1996-09-30 |
| JPH06502393A (ja) | 1994-03-17 |
| EP0549593A1 (de) | 1993-07-07 |
| CA2088774C (en) | 2004-02-10 |
| ATE143937T1 (de) | 1996-10-15 |
| DE59108272D1 (de) | 1996-11-14 |
| SK5193A3 (en) | 1993-11-10 |
| HUT64291A (en) | 1993-12-28 |
| CA2088774A1 (en) | 1992-02-05 |
| RU2058281C1 (ru) | 1996-04-20 |
| NO930383L (no) | 1993-02-03 |
| CZ281079B6 (cs) | 1996-06-12 |
| AU645595B2 (en) | 1994-01-20 |
| NO177422C (no) | 1995-09-13 |
| SK280699B6 (sk) | 2000-06-12 |
| PL166566B1 (pl) | 1995-06-30 |
| EP0549593B1 (de) | 1996-10-09 |
| DE4024836A1 (de) | 1992-02-06 |
| GR3021370T3 (en) | 1997-01-31 |
| KR930701379A (ko) | 1993-06-11 |
| NO177422B (no) | 1995-06-06 |
| ES2094817T3 (es) | 1997-02-01 |
| AU8291591A (en) | 1992-03-02 |
| KR100190773B1 (ko) | 1999-06-01 |
| US5488136A (en) | 1996-01-30 |
| NO930383D0 (no) | 1993-02-03 |
| JP3032987B2 (ja) | 2000-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69604875T2 (de) | Verfahren zur Herstellung von Cyclopentadienylderivaten | |
| EP0246646B1 (de) | Verfahren zur Herstellung von 4-Acetalen des Butendial-(1,4) und neue Acetale des Butendial-(1,4) | |
| DE4024836C2 (enExample) | ||
| DE3122995C2 (enExample) | ||
| EP0124041A1 (de) | Verfahren zur Herstellung von Cyclohexandionderivaten | |
| EP1140826B1 (de) | Verfahren zur herstellung von (2s,4r,9s)-octahydro-1h-indol-2-carbonsäure und zwischenprodukte dafür | |
| DE2426964C3 (de) | Verfahren zur Herstellung von Alkoxymethylenmalonsäuredialkylestern | |
| DE1793570B2 (de) | Verfahren zur Herstellung von Methylveratrylketon. Ausscheidung aus: 1518037 | |
| DE19944874C1 (de) | Verfahren zur Herstellung von Cyclooctanol | |
| DE739438C (de) | Verfahren zur Herstellung von Anlagerungsprodukten | |
| EP0174624A1 (de) | Verfahren zur Herstellung von Milchsäureestern | |
| DE1668730A1 (de) | Verfahren zur Herstellung von alpha-o-disubstituierten Alkanen | |
| EP0251058A2 (de) | Verfahren zur Racemisierung optisch aktiver- Phenoxy- propionsäureester und deren Derivate | |
| EP0806405A1 (de) | Verfahren zur Herstellung von Hexahydrofarnesylaceton aus 6.7-Dihydro-geraniol sowie neue Zwischenprodukte für dieses Verfahren | |
| EP0643036B1 (de) | Verfahren zur Herstellung von Pimelinsäureestern | |
| WO2000009469A1 (de) | Verfahren zur herstellung von atropasäureethylester | |
| DE953073C (de) | Verfahren zur Herstellung des 6-[2', 6', 6'-Trimethyl- cyclohexen-(1')-yl]-4-methylheadie-(2,4)-aldehyds-(1) | |
| EP0735032B1 (de) | Verfahren zur Herstellung von 5-Hydroxy-4-methyl-2(5H)-furanon | |
| DE3123177C2 (enExample) | ||
| DE1620705C3 (de) | Verfahren zur Herstellung von substituierten 2-Alkoxy-carbonylmethyl-1,4,6,7-tetrahydro-11bH-benzo-(a)chinolizinen | |
| DE60034254T2 (de) | Verfahren zur herstellung von 5- und/oder 6-substituierten 2-hydroxybenzoesäureestern | |
| DE889893C (de) | Verfahren zur Herstellung von ungesaettigten, sauerstoffhaltigen Propylenverbindungen | |
| WO2007051683A1 (de) | Verfahren zur herstellung von c1-c8-alkancarbonsäure-c1-c4-alkylestern | |
| DE1137035B (de) | Verfahren zur Herstellung von 2-Hydroxymethyl-8-hydroxy-1, 4-benzodioxan | |
| DE1091115B (de) | Verfahren zur Herstellung von 3-Formylmethyl-4-methyl-8-alkoxy-1, 2, 3, 4-tetrahydronphthalin-1-onen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |