Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4346204 | Copolymers containing hydroxyl groups, method of production and their application in sizing of paper | Karl Peterlein, Klaus Diedrich | 1982-08-24 |
| 4316977 | Copolymer of maleic anhydride, dicyclopentadiene and vinylcyclohexene and its use as anionic paper surface sizing material | Fritz Gude, Herbert Haferkorn | 1982-02-23 |
| 4246394 | Process of hardening epoxy coating composition with dicyandiamide/imidazoline derivative | Johann Obendorf | 1981-01-20 |
| 4207223 | Paper sizing agents | Volker Kulisch | 1980-06-10 |
| 4200559 | Anionic paper surface sizing agent | Karl Peterlein, Klaus Diedrich, Volker Kulisch | 1980-04-29 |