Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6201942 | Developer-carrying member, and developing device and image forming apparatus including the member | Takao Honda, Nobuaki Hara, Hatsuo Tajima, Tsuyoshi Watanabe, Keitaro Yamashita | 2001-03-13 |
| 5369475 | Developing roll positioning apparatus | — | 1994-11-29 |
| 5111250 | Heat-fixing device having a roller selectively loaded through an elastic element | — | 1992-05-05 |
| 4660505 | Developing apparatus | Ryuji Goto, Keitaro Yamashita | 1987-04-28 |
| 4496240 | Apparatus for controlled delivery of magnetic toner | Keitaro Yamashita | 1985-01-29 |
| 4441636 | Toner cartridge | Keitaro Yamashita | 1984-04-10 |
| 4436055 | Developing apparatus | Keitaro Yamashita | 1984-03-13 |