Issued Patents All Time
Showing 76–82 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6229018 | Process for the preparation of nicotinic acid | Dieter Heinz, Wolfgang Holderich, Wolfgang Bock, Klaus Huthmacher | 2001-05-08 |
| 6063968 | Method for the production of trimethylhydroquinone | Frank Hubner, Bernd Drapal, Hermann Schmitt, Klaus Huthmacher, Herbert Tanner | 2000-05-16 |
| 6048988 | Process for the production of .alpha.-tocopherol esters | Frank Hubner, Rainer Hahn, Horst Weigel, Klaus Huthmacher | 2000-04-11 |
| 6005147 | Method of producing 3, 5, 5-trimethylcyclohexa-3-ene-1-one(.beta.-isophorone) by the isomerization of 3, 5, 5-trimethylcyclohexa-2-ene-1-(.alpha.-isophorone) | Gunes Giray, Klaus Huthmacher, Frank Hubner, Herbert Tanner | 1999-12-21 |
| 5969176 | Process for the production of trimethylhydroquinone diesters and of trimethylhydroquinone | Horst Weigel, Nongyuan Shi, Hans Joachim Hasselbach, Klaus Huthmacher, Frank Hubner | 1999-10-19 |
| 5907065 | Method of producing .beta.-isophorone by the isomerization of .alpha.-isophorone | Gunes Giray, Frank Hubner, Rainer Hahn, Klaus Huthmacher, Herbert Tanner | 1999-05-25 |
| 5874632 | Method of producing ketoisophorone | Rainer Hahn, Ulrich Gora, Klaus Huthmacher, Frank Hubner | 1999-02-23 |