Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880719 | Two component electrophotographic developer | Toshiaki Murofushi, Hiroshi Nakazawa, Koichi Oyamada, Shigeo Aonuma, Yasuhiro Ohya | 1989-11-14 |
| 4797340 | Dry electrophotographic toner comprising graft copolymer | Koichi Tanaka, Shigeo Aonuma, Toshiaki Murofushi, Takaaki Kimura | 1989-01-10 |
| 4504563 | Toner for developing electrostatic latent image containing copolymer of vinyl compound and acid monomer | Koichi Tanaka, Hiroshi Takayama, Shigeo Aonuma, Yasuji Fukase | 1985-03-12 |
| 4388396 | Electrophotographic process of developing and transfering images uses fluorine containing offset preventing agent in developer | Hatsumi Nishibayashi, Norio Hikake, Toshihiro Kouchi, Tatsuo Aizawa | 1983-06-14 |
| 4385107 | Dry toners comprising a colorant and graph copolymer comprising a crystalline polymer and an amorphous polymer and processes using the same | Koichi Tanaka, Shigeo Aonuma, Hiroshi Takayama | 1983-05-24 |
| 4267246 | Pressure or heated roller electrophoto image fixing uses halogen or nitrile containing polymer dispersed within resin binder as offset prevent toner | Katsumi Nishibayashi, Norio Hikake, Toshihiro Kouchi, Tatsuo Aizawa | 1981-05-12 |