EP2168974 - Bibliographic data
Procédé de preparation de Drospirenon (6ß, 7ß; 15ß,16ß-diméthylène-3-oxo-17alpha-pregn-4-ene-21,17-carbolactone, DRSP)
| Last update | 16/06/2025 |
|---|---|
| Legal status | Invention expirée |
| Origin | Européen |
| (73) Holder |
BAYER INTELLECTUAL PROPERTY GMBH Alfred-Nobel-Strasse 10
40789 s
MONHEIM
Allemagne
|
|---|---|
| (72) Inventors |
Jörg-Thorsten Mohr
Morgenstr. 43 a
59423, Unna
Allemagne
Klaus Nickisch
Zescher Str. 14
12307, Berlin
Allemagne
|
| (74) Agent |
Mail recipient König Szynka Tilmann von Renesse Patentanwälte Partnerschaft mbB Mönchenwerther Straße 11
40545 Düsseldorf
Allemagne
|
| (21) Request number | EP09100011.7 |
|---|---|
| (22) Request date | 11/08/1997 |
| (11) Publication number | EP2168974 |
|---|---|
| Publication date | 02/07/2014 |
| (54) Title of the invention | Procédé de preparation de Drospirenon (6ß, 7ß; 15ß,16ß-diméthylène-3-oxo-17alpha-pregn-4-ene-21,17-carbolactone, DRSP) |
|---|---|
| (51) International classification | C07J 53/00 |
| International classification (before reform) | None |
| Claimed priority |
(31) Number: 19633685 |
|---|---|
| Initial application | None |
| Divisional application | None |
| Expected annuity | None |
|---|---|
| Last annuity | Annuity: 20 - Payment date 26/07/2016 |
| Publication | BREVETS D'INVENTION DESIGNANT MC DELIVRES PAR l'OEB - bulletin 2014/39, of 26/09/2014 |
|---|---|
| History | Publication de la délivrance du brevet européen - Legal date 02/07/2014 Modification du mandataire OEB du brevet européen - Legal date 05/06/2015 Constitution de mandataire pour un dossier - Legal date 05/11/2015 Expiration de l'invention - Legal date 12/08/2017 |