Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693445 | Electrostatic image developing toner | Noboru Akuzawa, Nobuo Suzuki | 1997-12-02 |
| 5645967 | Charge controlling agent composition and toner containing said composition | Sinichi Sato, Nobuo Suzuki, Sigeo Hosaka | 1997-07-08 |
| 5641884 | Spiro-naphtho-oxazine compound and photosensitive materials using the same | Akira Utsunomiya, Shinichi Sato, Nobuo Suzuki | 1997-06-24 |