Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5573881 | Toner composition for electrophotography | Shoji Kawasaki, Nobuhiro Hirayama, Kenji Uchiyama, Hiromi Akiyama, Katuo Uramoto | 1996-11-12 |
| 5389483 | Electrophotographic toner having two ethylene polymers | Shoji Kawasaki, Nobuhiro Hirayama, Kenji Uchiyama, Hiromi Akiyama | 1995-02-14 |
| 5266434 | Electrophotographic toner composition | Nobuhiro Hirayama, Kenji Uchiyama, Shoji Kawasaki, Hiromi Akiyama | 1993-11-30 |
| 5230978 | Electrophotographic toner composition | Shoji Kawasaki, Nobuhiro Hirayama, Kenji Uchiyama, Hiromi Akiyama | 1993-07-27 |
| 4849316 | Heat fixing electrophotographic toner containing olefin wax | Shoji Kawaski, Masaaki Shin, Takashi Yamamoto | 1989-07-18 |
| 4833057 | Toner composition for the electrophotography | Akira Misawa, Keiichi Ishikawa, Masaaki Shin, Akio Fujiwara, Kazuo Hisamatsu +2 more | 1989-05-23 |