Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861691 | Electrophotographic photosensitive material containing hydrazone compound | Masami Kuroda, Noboru Furusho | 1989-08-29 |
| 4861692 | Electrophotographic photosensitive material containing thiophene compound | Masami Kuroda, Noboru Furusho | 1989-08-29 |
| 4827193 | Correcting circuit of pincushion distortion | Kiyoshi Watanuki | 1989-05-02 |
| 4797348 | Method of forming a positive resist pattern in photoresist of o-naphthoquinone diazide and bisazide with UV imaging exposure and far UV overall exposure | Shirushi Yamamoto, Takashi Komine, Akira Yokota, Hisashi Nakane | 1989-01-10 |