Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6285507 | Color image reading lens system | — | 2001-09-04 |
| 6275342 | Zoom lens system | Kazuharu Kagoshima | 2001-08-14 |
| 6172818 | Zoom lens system | — | 2001-01-09 |
| 5623370 | Gradient index lens system | Toshihiko Ueda, Satoshi Iwasaki, Sanae Watanabe, Kazuharu Kagoshima | 1997-04-22 |
| 5602680 | Finite conjugate distance zoom lens system | — | 1997-02-11 |
| 5204780 | Lens system for a copying machine | — | 1993-04-20 |
| 5050973 | Symmetrical lens system for use in copying machine | — | 1991-09-24 |
| 4880292 | Transmission viewing screen of image projector apparatus | Hitoshi Kageyama, Toshikazu Suzuki, Tetsuo Kyogoku, Masayuki Nino | 1989-11-14 |
| 4789880 | Focusing device for use in optical apparatuses | Shinichi Mori, Hiroaki Nakauchi, Akiyoshi Hamada, Kazuyuki Yoshida | 1988-12-06 |