Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4957774 | Method of heat-fixing toner image | Shinji Doi, Satoshi Yoshida, Satoshi Matsunaga, Hiroaki Kawakami, Takashige Kasuya +1 more | 1990-09-18 |
| 4888264 | Process for preparing toner or capsule toner for use in electrophotography | Toru Matsumoto, Toshiyuki Koshio, Hisayuki Ushiyama, Masuo Yamazaki, Ichiro Ohsaki +3 more | 1989-12-19 |
| 4797344 | Encapsulated toner having shell with first vinyl polymer with Mn of 2000-225000 and second vinyl polymer with Mn of 1000-15000 | Toshiaki Nakahara, Ichiro Ohsaki, Hisayuki Ushiyama, Masashi Kiuchi, Masuo Yamazaki +1 more | 1989-01-10 |
| 4740443 | Encapsulated electrostatic toner with locally attached non-magnetic inorganic particles | Toshiaki Nakahara, Junichi Kurimoto, Toshiyuki Koshio, Hisayuki Ochi, Hisayuki Ushiyama +4 more | 1988-04-26 |