Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6306250 | Method of removing capsule oils from self-copying paper | Bernhard Nellessen, Klaus Hornfeck, Berthold Schreck, Sabine Heinen, Dieter Baumgarten | 2001-10-23 |
| 4859650 | Pressure-sensitive recording material | Gunther Hunger | 1989-08-22 |