Issued Patents All Time
Showing 76–100 of 107 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6146612 | Method for recovering sulfuric acid from sulfate salts | Hans-Albrecht Hasseberg, Hans Joachim Hasselbach, Volker Hafner, Harald Heinzel | 2000-11-14 |
| 6140536 | Process for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA) | Hans-Albrecht Hasseberg, Hans Joachim Hasselbach, Volker Hafner, Harald Heinzel, Barbara Jäger | 2000-10-31 |
| 6126972 | Process for the preparation of aqueous sodium methioninate solutions and use of those solutions in the production of a granulate | Martin Körfer, Lutz Rohland, Wolfram Binder, Hans Joachim Hasselbach, Hans Christian Alt +1 more | 2000-10-03 |
| 6103924 | Process for the preparation of 2,3,5-trimethylhydroquinone diesters | Nongyuan Shi, Mario Scholz, Steffen Hasenzahl, Horst Weigel, Bernd Drapal +2 more | 2000-08-15 |
| 6063968 | Method for the production of trimethylhydroquinone | Frank Hubner, Steffen Krill, Bernd Drapal, Hermann Schmitt, Herbert Tanner | 2000-05-16 |
| 6048988 | Process for the production of .alpha.-tocopherol esters | Steffen Krill, Frank Hubner, Rainer Hahn, Horst Weigel | 2000-04-11 |
| 6013815 | Production and use of salts of 6,8-bis (amidiniumthio)-octanoic acid | Thomas Beisswenger, Rainer Gewald, Alfred Olbrich, Horst Bethge, Frank Hubner +4 more | 2000-01-11 |
| 6008409 | Method for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA) which is stable in storage | Hans-Albrechl Hasseberg, Hans Joachim Hasselbach, Volker Hafner, Harald Heinzel, Axel Ronneburg | 1999-12-28 |
| 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) | Steffen Krill, Gunes Giray, Frank Hubner, Herbert Tanner | 1999-12-21 |
| 5990349 | Process for the preparation of D,L-methionine or the salt thereof | Friedhelm Geiger, Baudouin Halsberghe, Hans Joachim Hasselbach, Klaus Hentschel, Martin Körfer +5 more | 1999-11-23 |
| 5976609 | Process for recovering 2-hydroxy-4-methylthiobutyric acid (MHA), MHA and its use | Hans-Albrecht Hasseberg, Herbert Tanner, Volker Hafner, Harald Heinzel | 1999-11-02 |
| 5969176 | Process for the production of trimethylhydroquinone diesters and of trimethylhydroquinone | Steffen Krill, Horst Weigel, Nongyuan Shi, Hans Joachim Hasselbach, Frank Hubner | 1999-10-19 |
| 5907065 | Method of producing .beta.-isophorone by the isomerization of .alpha.-isophorone | Steffen Krill, Gunes Giray, Frank Hubner, Rainer Hahn, Herbert Tanner | 1999-05-25 |
| 5874632 | Method of producing ketoisophorone | Rainer Hahn, Ulrich Gora, Frank Hubner, Steffen Krill | 1999-02-23 |
| 5770769 | Process for the preparation of D,L-methionine or the salt thereof | Friedhelm Geiger, Baudouin Halsberghe, Hans Joachim Hasselbach, Klaus Hentschel, Martin Körfer +5 more | 1998-06-23 |
| 5760268 | Production and use of salts of 6, 8-bis (amidiniumthio) -octanoic acid | Thomas Beisswenger, Rainer Gewald, Alfred Olbrich, Horst Bethge, Frank Hubner +4 more | 1998-06-02 |
| 5672745 | Method for the continuous preparation of methionine or methionine derivatives | Hans-Albrecht Hasseberg, Stephan Rautenberg, Heinrich Petsch, Horst Weigel | 1997-09-30 |
| 5618957 | Method of producing salcomine | Frank Hubner, Ulrich Gora, Karlheinz Drauz | 1997-04-08 |
| 5455264 | RS-thioctic acid with novel morphology | Thomas Beisswenger, Horst Bethge, Joachim Goede, Frank Hubner, Herbert Klenk +1 more | 1995-10-03 |
| 5373068 | Use of isophoronediamine isomer mixtures in polyaddition resins | Hermann Piana | 1994-12-13 |
| 5283366 | Method of preparing 3-aminomethyl-3,5,5-trimethyl cyclohexyl amine | Hermann Schmitt | 1994-02-01 |
| 5281722 | Preparation and use of salts of the pure enantiomers of alpha-lipoic acid | Gottfried Blaschke, Ursula Scheidemantel, Horst Bethge, Roland Moller, Thomas Beisswenger | 1994-01-25 |
| 5191085 | Optically active salts of a substituted thiazolidine-4-carboxylate and 3-cyano-hydroxypropyl trimethyl-ammonium, their production and uses | Harald Jakob, Herbert Klenk | 1993-03-02 |
| 5166426 | Process for producing L-carnitine from D,L-carnitine nitrile salts | Harald Jakob, Herbert Klenk | 1992-11-24 |
| 5091554 | Method of preparing 1,3,3-trimethyl-5-oxo-cyclohexane carbonitrile | Hermann Schmitt | 1992-02-25 |