Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5539111 | Process for resolution of racemates of 4-aryl-2-oxo-pyrrolidine-3-carboxylic acid esters | Ralph Schmiechen, Kurt Hamp, Matthias Gottwald | 1996-07-23 |
| 5403724 | Microbiological reduction of prostacyclin intermediate products with a 15-keto group | Helmut Dahl, Werner Skuballa | 1995-04-04 |
| 5275936 | Process for the preparation of 1-methyl-1,4-androstadiene-3,17-dione | — | 1994-01-04 |
| 5250712 | 1.beta.,15.alpha.-di hydroxy-1.alpha.-methyl-5.alpha.-androstane-3,17-dione, its production and use | Helmut Hofmeister | 1993-10-05 |
| 5248609 | Racemic separation of 7.alpha.-acyloxy-6.beta.-hydroxymethyl-2-oxabicyclo[3.]-octan-3-ones by stereospecific enzymatic acylate hydrolysis | Helmut Dahl | 1993-09-28 |
| 5102793 | Stereospecific keto reduction of bicyclooctandione-carboxylic acid esters by microorganisms | Helmut Dahl, Helmut Vorbruggen | 1992-04-07 |
| 5093250 | Process for producing optically active bicyclo[3.3.0]octanedione carboxylic acid esters | Werner Skuballa | 1992-03-03 |
| 4912098 | Antiinflammatory 6 alpha-methylhydrocortisones | Klaus Annen, Henry Laurent, Rudolf Wiechert, Helmut Hofmeister | 1990-03-27 |
| 4894336 | Racemic dissociation of 3-acyloxy bicyclo(3.3.0)octan-7-one-2-carboxylic acid esters by stereospecific enzymatic or microbiological acylate hydrolysis | Helmut Dahl, Werner Skuballa | 1990-01-16 |
| 4696948 | Indanyl derivatives and process for their preparation | — | 1987-09-29 |
| 4614616 | Process for preparing 3.beta.7.beta.-dihydroxy-.DELTA..sup.5 -steroids | Rudolf Wiechert, Henry Laurent, Klaus Nickisch, Dieter Bittler | 1986-09-30 |
| 4603013 | Estrane derivatives | Gunter Neef, Gerhard Sauer, Helmut Hofmeister | 1986-07-29 |
| 4587236 | Novel 6.alpha.-methylprednisolone derivatives, their preparation, and their use | Klaus Annen, Henry Laurent, Rudolf Wiechert, Helmut Hofmeister | 1986-05-06 |
| 4464365 | 11.beta.-Chloro-.DELTA..sup.15 -steroids, a process for their preparation and pharmaceutical preparations containing them | Helmut Hofmeister, Klaus Annen, Henry Laurent, Rudolf Wiechert, Yukeshige Nishino | 1984-08-07 |
| 4435327 | 3.beta.,7.beta.,15.alpha.-Trihydroxy-5-androsten-17-one, its 3,15-dipivalate, and their preparation | Henry Laurent, Rudolf Wiechert | 1984-03-06 |
| 4416985 | Process for preparing 3.beta.,7.beta.-dihydroxy-.DELTA..sup.5 -steroids | Rudolf Wiechert, Henry Laurent, Klaus Nickisch, Dieter Bittler | 1983-11-22 |
| 4371529 | 11-Methylene-.DELTA..sup.15 -steroids, their preparation and use in pharmaceuticals | Helmut Hofmeister, Klaus Annen, Henry Laurent, Rudolf Wiechert, Hermann Steinbeck | 1983-02-01 |
| 4353985 | Process for the preparation of 11 .beta.-hydroxy steroids | Klaus Annen, Henry Laurent, Rudolf Wiechert | 1982-10-12 |
| 4337311 | 15 Hydroxylation of 1.alpha.,2.alpha.-methylene steroids | Hermann Steinbeck, Walter Elger | 1982-06-29 |
| 4330541 | Novel corticoid 17-thioacetals, their preparation and use | Klaus Annen, Henry Laurent, Helmut Hofmeister, Rudolf Wiechert | 1982-05-18 |
| 4307088 | 1-Hydroxy steroids, a process for the production thereof, and pharmaceutical preparations containing them | Rudolf Wiechert, Hermann Steinbeck, Walter Elger | 1981-12-22 |
| 4284720 | Process for the preparation of 19-hydroxy steroids of the androstane and pregnane series | — | 1981-08-18 |
| 4196203 | Novel corticoids | Joachim-Friedrich Kapp, Klaus Kieslich, Henry Laurent | 1980-04-01 |
| 4196204 | Hydroxylated 1 alpha, 2 alpha-methylene steroids | Hermann Steinbeck, Walter Elger | 1980-04-01 |