Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6221548 | Toner for making an ink printed-like image | Hiroaki Shiba, Tohru Takatsuna, Takayuki Itakura, Mamoru Kato, Akemi Kowari | 2001-04-24 |
| 5750301 | Toner for a two-component type developer | Yoshitake Shimizu, Seijiro Ishimaru, Norio Kubo, Kazuya Nagao, Terumichi Asano | 1998-05-12 |
| 5580691 | Toner for a two-component type developer | Yoshitake Shimizu, Seijiro Ishimaru, Norio Kubo, Kazuya Nagao, Terumichi Asano | 1996-12-03 |
| 5521045 | Toner for a two-component-type magnetic developing agent having excellent spent resistance | Yoshitake Shimizu, Seijiro Ishimaru, Kazuya Nagao | 1996-05-28 |
| 5500319 | Toner for a two-component-type magnetic developing agent having excellent spent resistance | Yoshitake Shimizu, Seijiro Ishimaru, Kazuya Nagao | 1996-03-19 |
| 5246809 | Carrier for a developing agent | Hideaki Kawata, Nobuaki Kawano, Koji Honda | 1993-09-21 |
| 5085964 | Carrier for developer | Hideaki Kawata, Kiminori Umeda, Nobuaki Kawano, Koji Honda | 1992-02-04 |
| 5079124 | Carrier for developer | Hideaki Kawata, Nobuaki Kawano, Koji Honda | 1992-01-07 |
| 4551403 | Photosensitive material for electrophotography | Nobuhiro Miyakawa, Teruaki Higashiguti, Yumiko Sano | 1985-11-05 |
| 4492746 | Electrophotographic photosensitive material with polyester binder | Nobuhiro Miyakawa, Teruaki Higashiguti, Yumiko Sano | 1985-01-08 |
| 4447513 | Photosensitive material for electrophotography | Nobuhiro Miyakawa, Teruaki Higashiguchi, Yumiko Sano | 1984-05-08 |
| 4433039 | Trisazo electrophotographic photosensitive material | Nobuhiro Miyakawa, Teruaki Higashiguti, Yumiko Sano | 1984-02-21 |