Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6169637 | Catadioptric lens | — | 2001-01-02 |
| 5991082 | Lens system with multiple focal lines | Tamio Hara, Kozo Ando | 1999-11-23 |
| 4911539 | Micro zoom lens | Kiyoshi Hayashi, Atsushi Shibayama | 1990-03-27 |
| 4183625 | Wide-angle photographic objective | — | 1980-01-15 |