Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6121480 | Method for producing unsymmetrically substituted biphenyls | Bernd Kohler, Thomas Mosandl | 2000-09-19 |
| 5637740 | Production of 2, 3-epoxypropyl trialkyl ammonium chlorides | Wolfgang Fischer, Gert Roessler | 1997-06-10 |
| 4902826 | Process for the preparation of 2-arylthiobenzoic acids | Wolfgang Bauer, Kuno Reh | 1990-02-20 |
| 4686303 | Process for the preparation of diaryl sulphides | Wolfgang Bauer, Winfried Sperling | 1987-08-11 |
| 4677209 | Process for the preparation of 2-mercaptobenzoxazoles | Ulrich Kussmaul, Kuno Reh, Johannes Becherer, Herbert Wille, Rolf Muller | 1987-06-30 |
| 4401603 | Process for the preparation of aryl isocyanide-dichlorides | Dieter Ferchland, Ulrich Kussmaul, Rolf Muller | 1983-08-30 |
| 4365933 | Axial vane ring consisting of ceramic materials for gas turbines | Heinz Burfeindt, Patrick Stuart | 1982-12-28 |
| 4366049 | Process for recycling of used lubricating oils | Helmut Knorre, Friedrich Fauser, Willi Fischer | 1982-12-28 |
| 4362471 | Article, such as a turbine rotor and blade which comprises a first zone of a nonoxide ceramic material and a second zone of a softer material | Johann Siebels | 1982-12-07 |
| 4332935 | Process for the production of cationic starch ethers | Wolfgang Fischer, Gerhard Pohl | 1982-06-01 |
| 4255252 | Procedure for the reprocessing of used lubricating oils | Helmut Knorre, Gerhard Pohl | 1981-03-10 |
| 4252637 | Process for the reprocessing of used lubricating oils (II) | Helmut Knorre, Axel Waniorek | 1981-02-24 |
| 4219456 | Flame retardant agent solution of phosphoric acid containing condensate of guanidine and formaldehyde compatible with formaldehyde resin solutions | — | 1980-08-26 |
| 4214906 | Method of producing an article which comprises a first zone of a nonoxide ceramic material and a second zone of a softer material | Johann Siebels | 1980-07-29 |