Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5798863 | Image stabilized optical system | Tetsuo Udagawa, Kouichi Nagata, Kazuto Tanaka | 1998-08-25 |
| 5539575 | Image stabilized optical system | Kouichi Nagata | 1996-07-23 |
| 5361217 | Position measuring/plotting apparatus | Kazuo Makimura, Shigeru Kojima | 1994-11-01 |
| 4639099 | Optical instrument | Kazuto Tanaka, Kouichi Nagata | 1987-01-27 |