Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882428 | Azaporphyrin compounds | — | 1989-11-21 |
| 4837063 | Optical recording material | — | 1989-06-06 |
| 4826954 | Diorganopolysiloxane-azobenzene alternating copolymers and methods for their preparation | Toshio Suzuki | 1989-05-02 |