Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6248491 | Toner for electrostatic image development | Hitoshi Takayanagi, Minoru Nomura, Takashi Ito, Kenichi Hirabayashi, Toshiro Kogawara +2 more | 2001-06-19 |
| 6017670 | Electrophotographic toner and process for the preparation thereof | Toyomi Hashizume, Shoji Okuno, Hitoshi Takayanagi, Minoru Nomura, Takashi Ito +1 more | 2000-01-25 |
| 5885743 | Electrophotographic toner and process for the preparation thereof | Hitoshi Takayanagi, Hiroko Sakurai, Kazuo Itoya, Kinji Shinzo, Kenichi Hirabayashi +4 more | 1999-03-23 |