Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5574598 | Varifocal lens | Michio Hisanaga, Tadashi Hattori | 1996-11-12 |
| 5498868 | Optical data reader capable of quickly changing a condensing position of a light beam | Hideaki Nishikawa, Michio Hisanaga | 1996-03-12 |
| 5456798 | Methods and apparatus for processing curved surface | Kiyoshi Saeki | 1995-10-10 |