Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4371529 | 11-Methylene-.DELTA..sup.15 -steroids, their preparation and use in pharmaceuticals | Helmut Hofmeister, Karl Petzoldt, Klaus Annen, Henry Laurent, Rudolf Wiechert | 1983-02-01 |
| 4337311 | 15 Hydroxylation of 1.alpha.,2.alpha.-methylene steroids | Karl Petzoldt, Walter Elger | 1982-06-29 |
| 4333928 | 16 .alpha.-Alkyl steroids, their preparation, and pharmaceutical preparations thereof | Gunter Neef, Ulrich Eder, Gregor Haffer, Gerhard Sauer, Rudolf Wiechert | 1982-06-08 |
| 4307088 | 1-Hydroxy steroids, a process for the production thereof, and pharmaceutical preparations containing them | Karl Petzoldt, Rudolf Wiechert, Walter Elger | 1981-12-22 |
| 4277468 | 11-Methylene steroids, their preparation and pharmaceutical preparations containing them | Helmut Hofmeister, Rudolf Wiechert, Klaus Annen, Henry Laurent | 1981-07-07 |
| 4259325 | 1,3-Dibenzoic acid esters of 17.alpha.-ethynyl-7.alpha.-methyl-1,3,5(10)-estratriene-1,3,17.beta.-tri ol | Klaus Prezewowsky, Rudolf Wiechert | 1981-03-31 |
| 4196204 | Hydroxylated 1 alpha, 2 alpha-methylene steroids | Karl Petzoldt, Walter Elger | 1980-04-01 |