Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4257987 | Lower alkyl di propargyl phosphates | Gunter Arend, Wolfgang Behrenz | 1981-03-24 |
| 4252857 | Flameproofing substrate | Heinrich Heine, Gerhard Winter | 1981-02-24 |
| 4246103 | Propane-1,3-diphosphonic acids for conditioning water | Herbert Kallfass, Roland Kleinstuck | 1981-01-20 |
| 4229521 | Method of processing photographic materials | Karl Frank | 1980-10-21 |