Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693445 | Electrostatic image developing toner | Hiroyoshi Yamaga, Nobuo Suzuki | 1997-12-02 |
| 5368971 | Electrophotographic toner containing a zinc benzoate compound | Mitsutoshi Anzai, Yuuji Matsuura, Genpei Sugiyama | 1994-11-29 |
| 5232809 | Toner for electrophotography | Mitsutoshi Anzai, Yuuji Matsuura, Kayoko Watanabe | 1993-08-03 |
| 5164283 | Electrophotographic developing powder | Isao Niimura, Mitsutoshi Anzai, Hiroyoshi Yamaga | 1992-11-17 |
| 4977249 | Metal of hydroxy-phenylaze and hydroxy-naphthylazo compounds as near-red absorbers | Yuto Matsumoto, Hiroyoshi Yamaga, Toshio Obara | 1990-12-11 |
| 4624907 | Electrophotographic toner containing metal complex | Isao Niimura, Katsuichi Motohashi, Hiroyoshi Yamaga | 1986-11-25 |
| 4433040 | Electrophotographic toner containing a metal complex dye | Isao Niimura, Hiroshi Imagome, Hiroyoshi Yamaga, Kenji Yuta, Takeo Kurahashi | 1984-02-21 |