Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5153088 | Electrophotosensitive material with x-type metal free phthalocyanine and perylene compound | Nariaki Muto, Tatsuo Maeda, Mikio Kakui, Keisuke Sumida, Toru Nakazawa | 1992-10-06 |
| 4968579 | Organic laminated photosensitive material of positive charging type and process for preparation thereof | Keizo Kimoto, Masashi Tanaka | 1990-11-06 |
| 4882253 | Organic laminated photosensitive material of positive charging type | Yoshiaki Kato, Masashi Tanaka, Mitsuji Tsujita, Keizo Kimoto, Mika Kawaguchi | 1989-11-21 |