Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4764498 | Silica-containing shaped articles and a process for their preparation | Josef Haydn, Udo Birkenstock | 1988-08-16 |
| 4570023 | Process for the preparation of trichlorobenzenes | Gerd-Michael Petruck, Raimund Wambach, Sigurd Hartung | 1986-02-11 |
| 4499023 | Process for separating technically pure 2,4-diisocyanatotoluene or isomer mixtures having an increased content of 2,4-diisocyanatotoluene from isomer mixtures of 2,4- and 2,6-diisocyanatotoluene | Alexander Mitrowsky, Werner Hauser | 1985-02-12 |
| 4456777 | Process for the preparation of 2-chloro-4-nitrotoluene | Gerd-Michael Petruck, Paul R. Wambach, deceased | 1984-06-26 |
| 4300004 | Process for the preparation of dichlorobenzenes | Werner Hauser, Feliks Bitners, Raimund Wambach | 1981-11-10 |