Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5847152 | Preparation of a D-(+)-biotin intermediate | Jurgen Eckstein, Thomas Koppe, Michael Schwarz | 1998-12-08 |
| 5520906 | Triazine derivatives with UV filter properties | Ingeborg Stein, Ulrich Heywang, Roland Martin, Michael Schwarz | 1996-05-28 |
| 5473079 | Process for preparing 2-arylbenzimidazole-5-sulfonic acids | Ulrich Heywang, Ingeborg Stein, Ulrich Fechtel, Gerald Faller, Hartmut Hartner | 1995-12-05 |
| 5399563 | Benzylidenequinuclidinones | Ingeborg Stein, Roland Martin, Ulrich Heywang, Henning Bottcher, Gunther Holzemann | 1995-03-21 |
| 5275941 | Process for the preparation of N-protected dialkyl (2S,3S)-3-ethylaspartates | Ulrich Heywang, Harry Schwartz | 1994-01-04 |
| 5250699 | 2-oxo-5-mercaptomethylimidazolidine-4-ols | Eike Poetsch, Willem N. Speckamp | 1993-10-05 |
| 5235065 | Process for the preparation of a D-(+)-biotin intermediate | Michael Schwarz, Jurgen Eckstein | 1993-08-10 |
| 5233045 | Process for the preparation of imidazothiazolone derivatives | Michael Schwarz | 1993-08-03 |
| 5180837 | Pilosinine derivatives | Ulrich Heywang, Michael Schwarz | 1993-01-19 |
| 5095118 | Process for the preparation of D-(+)-biotin | Eike Poetsch | 1992-03-10 |
| 5075452 | Process for the preparation of 5-membered nitrogen containing heteroaromatics | Richard Kirchlechner, Arno Basedow | 1991-12-24 |
| 5068341 | Optically active hydantoins | Eike Poetsch | 1991-11-26 |
| 4937351 | Process for the preparation of D-(+)-biotin | Eike Poetsch | 1990-06-26 |
| 4877882 | Process for the preparation of D-(+)-biotin | Eike Poetsch | 1989-10-31 |
| 4837402 | Process for the preparation of D-(+)-biotin | Eike Poetsch | 1989-06-06 |
| 4739071 | Process for the preparation of enantiomers | Eike Poetsch | 1988-04-19 |
| 4732987 | Process for the preparation of D-(+)-biotin | Eike Poetsch | 1988-03-22 |