Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4952697 | Process for the preparation of 2-nitro-3-aminopyridine, and the intermediates which are formed in the reaction | Siegfried Planker, Klaus Warning, Gunter H. Herbst, deceased, Ulrike M. Herbst, Bettina S. Herbst | 1990-08-28 |
| 4770820 | Process for the preparation of carbamoyl chlorides derived from secondary amines | Gunther Semler | 1988-09-13 |
| 4590295 | Process for the manufacture of p-hydroxyphenyl-acetic acid | Werner Spielmann | 1986-05-20 |
| 4564712 | Process for the preparation of diphenyl ethers | Herbert Kuckertz | 1986-01-14 |
| 4340746 | Process for the preparation of thiochloroformates | Gunther Semler | 1982-07-20 |
| 4339594 | Process for the manufacture of phenylacetic acid and simple derivatives thereof | Werner Spielmann | 1982-07-13 |
| 4306102 | P-Tert.butylbenzotribromide and p-tert.butylbenzoyl bromide and process for their manufacture | Franz Landauer | 1981-12-15 |
| 4277421 | Process for the manufacture of para-tert.butylbenzaldehyde and its derivatives which are halogen-substituted at the nucleus | Franz Landauer | 1981-07-07 |
| 4266066 | Process for the manufacture of ketones | Werner Spielmann | 1981-05-05 |