Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4329499 | Alkyldiphenyl ether-sulphonic acid hydrazides, their preparation and their use as blowing agents | Walter Horstmann | 1982-05-11 |
| 4325789 | Process for separating off phenol from a mixture thereof with a cresol | Alfredo Wust | 1982-04-20 |
| 4319019 | Polyamines containing amide groups | Wolfgang Lehmann, Friedhelm Muller, Gunther Cramn, Wilfried Lobach | 1982-03-09 |