Issued Patents All Time
Showing 26–50 of 92 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716237 | Process for the production of 3-oxonitriles | Karlheinz Drauz, Elisabeth Wolf-Heuss | 1987-12-29 |
| 4716247 | Process for the production of thiosemicarbazide | Herbert Klenk, Wolfgang Schulz | 1987-12-29 |
| 4716242 | Salts of oxazaphosphorine derivatives | Jurgen Engel, Ulf Niemeyer, Peter Hilgard, Joerg Pohl | 1987-12-29 |
| 4705867 | Process for the production of 1,2-dithiolan-3-pentanoic acid (thioctic acid) and intermediate compounds therefor | Guenes Giray, Klaus Huthmacher, Thomas Lied | 1987-11-10 |
| 4686010 | Process for the production of non-aqueous hydrogen peroxide solutions and their use | Karlheinz Drauz | 1987-08-11 |
| 4628126 | Process for the production of dihydroxybenzenes | Karlheinz Drauz | 1986-12-09 |
| 4618730 | Process for the production of pyrocatechol and hydroquinone | Karlheinz Drauz | 1986-10-21 |
| 4602096 | Process for the racemization of N-acetyl-D,L-.alpha.-aminocarboxylic acids | Michael Karrenbauer | 1986-07-22 |
| 4590305 | Process for the selective production of dihydroxybenzenes | Karlheinz Drauz | 1986-05-20 |
| 4564514 | Process for the production of water-free organic hydrogen peroxide solution | Karlheinz Drauz, Rolf Wirthwein | 1986-01-14 |
| 4562153 | Process for the separation of L-leucine and L-isoleucine | Jurgen Martens, Horst Weigel | 1985-12-31 |
| 4562152 | Process for obtaining pure L-leucine | Jurgen Martens, Horst Weigel | 1985-12-31 |
| 4551562 | Process for the production of dihydroxybenzenes | Karlheinz Drauz | 1985-11-05 |
| 4551548 | Process for the recovery of S-(carboxymethyl)-(R)-cysteine and S-(carboxymethyl)-(S)-cysteine | Jurgen Martens, Horst Weigel | 1985-11-05 |
| 4550199 | Process for obtaining D,L-homocystine (I) | Michael Karrenbauer, Theodor Lussling, Fritz P. Schafer | 1985-10-29 |
| 4550200 | Process for obtaining D,L-homocystine (II) | Michael Karrenbauer, Theodor Lussling, Fritz P. Schafer | 1985-10-29 |
| 4542159 | Cycloaliphatic ketoamines | Jurgen Engel, Klaus Posselt, Fritz Stroman, Klaus Thiemer | 1985-09-17 |
| 4533766 | Process for the production of dihydroxybenzenes | Karlheinz Drauz | 1985-08-06 |
| 4520209 | Process for cyclizing upsilon-chlorocarboxylic acids | Werner Schwarze, Hans Remmel, Wolfgang Hohn | 1985-05-28 |
| 4511719 | N.alpha.-(3-Cyanopropanoyl)-aminocarboxylic acid derivatives and their use | Jurgen Martens, Horst Weigel | 1985-04-16 |
| 4496729 | Catalysts for the production of 2-cyanopyrazine | Wolfgang Bergstein, Heinz Friedrich, Gunther Prescher, Helmut Beschke | 1985-01-29 |
| 4486600 | Process for the production of .beta.-hydroxy-.alpha.-aminocarboxylic acids | Bernd Lehmann, Klaus Deller | 1984-12-04 |
| 4482759 | Fungicidally active benzhydrol derivatives | Werner Schwarze | 1984-11-13 |
| 4482760 | Process for the production of 1,2-diols | Klaus Deller, Karlheinz Drauz, Bernd Lehmann | 1984-11-13 |
| 4469876 | Process for the production of L-proline | Karlheinz Drauz, Jurgen Martens, Paul Scherberich, Franz Effenberger | 1984-09-04 |