Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4678832 | Hot-melt adhesives of partially saponified vinyl ester copolymers | Richard Gutte | 1987-07-07 |
| 4444839 | Water-soluble label, a process for its preparation and its use | Joachim Dudzik, Winfried Dudzik, Wolfgang Zimmermann | 1984-04-24 |
| 4430447 | Open-pore molded article based on polyvinyl acetals, and a process for its preparation | Wolfgang Zimmermann | 1984-02-07 |
| 4331781 | Process for the preparation of a polyvinyl alcohol complex compound in the presence of an organic boric acid derivative | Wolfgang Zimmermann | 1982-05-25 |
| 4296210 | Open-cell shaped article made of acetalized polyvinyl alcohol and process for its manufacture | Wolfgang Zimmermann, Hermann Schindler | 1981-10-20 |