Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4968798 | Liquid-crystalline, 1-substituted piperidine-4-carboxylic acid esters | Dieter Ohlendorf, Rainer Wingen | 1990-11-06 |
| 4915868 | Optically active esters of 1-acylproline as dopes in liquid-crystal mixtures, and novel optically active esters of 1-acylproline | Dieter Ohlendorf, Rainer Wingen | 1990-04-10 |
| 4691056 | 3-halogenoacetonesulfonamides and a process for their preparation | — | 1987-09-01 |
| 4650902 | 2-ketosulfonamides and process for their preparation | Albert Bender, Lothar Willms, Rainer Wingen | 1987-03-17 |
| 4628109 | 2-ketosulfonamides and process for their preparation | Erwin Schmidt, Klaus-Dieter Kampe | 1986-12-09 |
| 4448731 | 1,2-Dihalogenoalkylsulfonyl isocyanates and 1,2-di-halogenocycloalkylsulfonyl isocyanates and process for their manufacture | Lothar Willms, Thomas Huttelmaier | 1984-05-15 |
| 4448988 | 2-Ketosulfonamides | — | 1984-05-15 |
| 4440565 | Heterocyclically substituted (halogeno)alkyl- and (halogeno)alkoxysulfonylureas, and their use in agriculture | Lothar Willms, Hilmar Mildenberger, Klaus Bauer, Helmut Burstell, Hermann Bieringer | 1984-04-03 |
| 4363744 | Mixtures of optical brighteners and their use for the optical brightening | Rudiger Erckel, Gunter Rosch, Heinz Probst | 1982-12-14 |
| 4231741 | Mixtures of optical brighteners | Rudiger Erckel, Gunter Rosch, Heinz Probst | 1980-11-04 |
| 4219651 | Benzimidazo-[1,2-a]-quinolines | Rudiger Erckel, Horst Fruhbeis | 1980-08-26 |
| 4197401 | Stilbenes, process for the manufacture thereof and the use thereof as optical brighteners | Rudiger Erckel, Gunter Rosch | 1980-04-08 |