Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5573881 | Toner composition for electrophotography | Shoji Kawasaki, Nobuhiro Hirayama, Kenji Uchiyama, Hisatomo Sato, Katuo Uramoto | 1996-11-12 |
| 5389483 | Electrophotographic toner having two ethylene polymers | Shoji Kawasaki, Nobuhiro Hirayama, Kenji Uchiyama, Hisatomo Sato | 1995-02-14 |
| 5266434 | Electrophotographic toner composition | Nobuhiro Hirayama, Kenji Uchiyama, Shoji Kawasaki, Hisatomo Sato | 1993-11-30 |
| 5230978 | Electrophotographic toner composition | Shoji Kawasaki, Nobuhiro Hirayama, Kenji Uchiyama, Hisatomo Sato | 1993-07-27 |