Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12405550 | Developing device, process cartridge, and electrophotographic image forming apparatus | Takashi Koyanagi, Kineo Takeno | 2025-09-02 |
| 12346063 | Developing apparatus | Yuzo Seino, Kenta Kamikura, Noriyuki Doi | 2025-07-01 |
| 11966174 | Electrophotographic member, electrophotographic process cartridge, and electrophotographic image forming apparatus | Takashi Koyanagi | 2024-04-23 |