Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4985328 | Dry toner, dry developer and process for forming electrophotographic images | Ryouji Tan, Takashi Ikeda, Tetsuya Fujii, Chiaki Okada, Osamu Higashida +2 more | 1991-01-15 |
| 4950574 | Toner for developing electrostatic image comprising vinyl polymer having hydroxyl number of 50 to 350 | Isamu Moribe, Ikutoshi Shibuya | 1990-08-21 |
| 4686166 | Electrophoto toner comprising imido group monomer unit in polymer | Isamu Moribe, Takayuki Saito, Toshiyuki Fujita, Akihiro Kobayashi | 1987-08-11 |