Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6028715 | Variable magnification optical system | Katsuhiro Takamoto | 2000-02-22 |
| 5633759 | Zoom lens system | Hideki Nagata, Soh Ohzawa, Hiroyuki Matsumoto | 1997-05-27 |
| 4729643 | Telephoto zoom lens system for camera | Isao Kawaguchi, Shin Ikeda | 1988-03-08 |