Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4491394 | Image-forming lens system | — | 1985-01-01 |
| 4439023 | Optical system for ophthalmological instruments | Youich Iba, Ken-ichi Nakahashi | 1984-03-27 |
| 4268128 | Ocular of large visual field | Toshifumi Uetake | 1981-05-19 |