Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883730 | Method for manufacturing heat-stable structured layers based on expoxy resin | Hellmut Ahne | 1989-11-28 |
| 4828948 | Method for the production of heat-resistant structured layers | Hellmut Ahne | 1989-05-09 |