Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851549 | Pigments | Helmut Flohr, Joachim Jesse, Peter Neumann | 1989-07-25 |
| 4806664 | Novel tetraphenyldithiolene complexes, asymmetrically substituted benzoins, and optical recording materials containing the novel complexes | Wolfgang Schrott, Peter Neumann, Michael Thomas, Helmut Barzynski, Klaus D. Schomann +1 more | 1989-02-21 |