Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829509 | Optical recording medium, its preparation and its use as a read only memory information carrier | Peter Neumann, Peter Hauser, Gerhard Wagenblast | 1989-05-09 |
| 4806664 | Novel tetraphenyldithiolene complexes, asymmetrically substituted benzoins, and optical recording materials containing the novel complexes | Peter Neumann, Bernhard Albert, Michael Thomas, Helmut Barzynski, Klaus D. Schomann +1 more | 1989-02-21 |