Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5370953 | Electrophotosensitive material | — | 1994-12-06 |
| 5260157 | Electrophotographic photosensitive element comprising a surface protective layer comprising an etherified melamine-formaldehyde resin | Yasufumi Mizuta, Akihiko Kawahara, Nariaki Tanaka | 1993-11-09 |
| 5135834 | Electrophotographic polyvinyl acetal layer containing element and process of producing | Yasuyuki Hanatani, Yasufumi Mizuta | 1992-08-04 |
| 5063126 | Electrophotographic photosensitive material | Yasuyuki Hanatani, Yasufumi Mizuta | 1991-11-05 |
| 5024913 | Electrophotographic photosensitive material | Takeshi Yoshida, Toshiyuki Fukami, Nariaki Tanaka | 1991-06-18 |
| 4925759 | Electrophotographic sensitive material with pyrrolopyrrole and benzidine derivatives | Yasuyuki Hanatani | 1990-05-15 |
| 4757343 | Electrostatic image output apparatus | Yoshiaki Kato | 1988-07-12 |
| 4620203 | Electrostatic image forming apparatus using field effect transistors | Yoshiaki Kato | 1986-10-28 |
| 4576888 | Toner for electrophotography comprising azoic pigment having silica core | Nobuhiro Miyakawa, Kouji Maekawa, Teruaki Higashiguchi | 1986-03-18 |
| 4566908 | Azoic pigments having a silica core | Nobuhiro Miyakawa, Teruaki Higashiguchi, Syoji Nakagama | 1986-01-28 |
| 4536461 | Laminated photosensitive material and process for production thereof | Junichi Hanna, Hiroshi Kokado | 1985-08-20 |
| 4524118 | Electrophotographic photosensitive material with ozone inhibitor | Nobuhiro Miyakawa, Teruaki Higashiguchi, Tomomi Edo | 1985-06-18 |
| 4480019 | Electrophotographic photosensitive material | Teruaki Higashiguchi, Nobuhiro Miyakawa | 1984-10-30 |