Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33032 | Polycarbonate films of low flammability and improved stress crack resistance | Rudolf Binsack, Joachim Wank | 1989-08-22 |
| 4828901 | Injection-moulded article and a process for the production thereof | Joachim Wank, Werner Waldenrath | 1989-05-09 |