Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4801640 | Polyester film having improved abrasion resistance manufactured from particle-filled polyester having nucleating agent dispersed therein | Werner Schaefer, Wolfgang Gawrisch, Hartmut Hensel | 1989-01-31 |