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Legal status
Patent not validated
| (51) | INT.CL. | C07C 51/353 | (2006.01) |
| C07C 403/20 | (2006.01) | ||
| C07D 309/32 | (2006.01) |
| (11) | Number of the document | 1204637 |
| (13) | Kind of document | T |
| (96) | European patent application number | 00944156.9 |
| Date of filing the European patent application | 2000-07-24 | |
| (97) | Date of publication of the European application | 2002-05-15 |
| (45) | Date of publication and mention of the grant of the patent | 2005-04-20 |
| (46) | Date of publication of the claims translation |
| (86) | Number | PCT/IB2000/001020 |
| Date | 2000-07-24 |
| (87) | Number | WO 2001/009089 |
| Date | 2001-02-08 |
| (30) | Number | Date | Country code |
| DE103799 | 1999-07-30 | IN | |
| 467201 | 1999-12-20 | US |
| (72) |
SALMAN, Mohammad, IN
KAUL, Vijay, Kumar, IN
BABU, J., Suresh, IN
KUMAR, Naresh, IN
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| (73) |
RANBAXY LABORATORIES, LTD.,
19, Nehru Place, New Delhi 110 019,
IN
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| (54) | PROCESS FOR THE PREPARATION OF ISOTRETINOIN |
| PROCESS FOR THE PREPARATION OF ISOTRETINOIN |