Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5907750 | Cylindrical structure, process cartridge, and image forming apparatus | Yusuke Yamada, Shigemori Tanaka | 1999-05-25 |
| 5675893 | Method for fastening an engaging member to a cylinder | Yusuke Yamada, Shigemori Tanaka | 1997-10-14 |
| 4644155 | Reading optical system | Noritaka Mochizuki, Chikara Jin | 1987-02-17 |
| 4479061 | Luminance amplifier and an apparatus including the same | Yuichiro Koizumi | 1984-10-23 |