Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5315036 | Process for the preparation of 2-aminobenzene-1,4-disulphonic acids and the new compound 6-chloro-2-aminobenzene-1,4-disulphonic acid | Rolf Schimpf | 1994-05-24 |
| 4663484 | Diaminoalkyldiphenyl ethers, a process for their preparation and their use | — | 1987-05-05 |
| 4369324 | Process for the preparation of 2-amino-6-nitrobenzothiazole | Richard Sommer, Hans-Hermann Trautwein, Gerhard Wolfrum | 1983-01-18 |
| 4329499 | Alkyldiphenyl ether-sulphonic acid hydrazides, their preparation and their use as blowing agents | Knut Hammerstrom | 1982-05-11 |
| 4289881 | Process for the preparation of 1,4-diazabicyclo-(2,2,2)-octane | Laszlo Imre, Hans Leopold | 1981-09-15 |
| 4211604 | Apparatus for the mechanical separation of solids from drying gas in spray driers | Edgar Muschelknautz, Heiko Herold, Kunz Brunner | 1980-07-08 |