Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8254821 | Cleaning apparatus, image forming apparatus including the same, and process cartridge including the same | — | 2012-08-28 |
| 6829449 | Image forming apparatus with transfer bias inverting function | Hiroyoshi Matsumoto, Teruaki Mitsuya, Tsuneaki Kawanishi, Hisao Okada, Masayoshi Ishii +1 more | 2004-12-07 |
| 6813462 | Electro-photographic developing unit | Teruaki Mitsuya, Tsuneaki Kawanishi, Masayoshi Ishii, Hisao Okada, Hiroyoshi Matsumoto +1 more | 2004-11-02 |