Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8580470 | Charge control agent composition and toner utilizing the same | Hideyuki Otsuka, Masaki Okubo | 2013-11-12 |
| 5770341 | Friction charge-providing member for positively-chargeable toner | Yuji Matsuura, Hiroyoshi Yamaga | 1998-06-23 |
| 5679489 | Electrostatic image developing toner | Yuuji Matsuura, Isao Niimura, Kayoko Watanabe, Keiko Iwasa | 1997-10-21 |
| 5413891 | Electrostatic image developing toner | Yuji Matsuura, Mitsutoshi Anzai, Kayoko Watanabe | 1995-05-09 |
| 5413892 | Electrostatic image developing toner | Yuji Matsuura, Mitsutoshi Anzai, Kayoko Watanabe | 1995-05-09 |
| 5391454 | Electrostatic image developing toner | Yuji Matsuura, Mitsutoshi Anzai, Kayoko Watanabe | 1995-02-21 |
| 5378573 | Electrophotographic toner | Mitsutoshi Anzai, Yuji Matsuura, Miki Kanno, Kayoko Watanabe | 1995-01-03 |
| 5346794 | Electrophotographic toner | Mitsutoshi Anzai, Yuji Matsuura, Miki Kanno, Kayoko Watanabe | 1994-09-13 |