Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4946968 | Method of preparing alkali metal salts of 2-pyrrolidone-5-carboxylic acid | Hans-Peter Krimmer, Karlheinz Drauz | 1990-08-07 |
| 4673741 | Bis-(2-ethylamino-4-diethylamino-s-triazine-6-yl) tetrasulfide, process for its production, use and vulcanizable mixtures containing it | Werner Schwarze, Siegfried Wolff, Horst Lambertz | 1987-06-16 |
| 4621121 | Vulcanizable mixture containing bis-(2-ethylamino-s-triazin-6-yl)-tetrasulfide | Werner Schwarze, Siegfried Wolff, Horst Lambertz | 1986-11-04 |
| 4520209 | Process for cyclizing upsilon-chlorocarboxylic acids | Werner Schwarze, Axel Kleemann, Wolfgang Hohn | 1985-05-28 |