Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4757335 | Extender-containing camera lens with a grip | Yasunobu Shinpo | 1988-07-12 |
| 4558927 | Zoom lens assembly | Sachio Omori, Hideshi Naito, Hitoshi Imanari | 1985-12-17 |
| 4472031 | Zoom lens barrel | — | 1984-09-18 |
| 4457591 | Single operator macro-focusing zoom lens barrel | Hitoshi Imanari | 1984-07-03 |
| 4456342 | Zoom lens barrel capable of close up photography | — | 1984-06-26 |
| 4439031 | Diaphragm driving device for a lens barrel | — | 1984-03-27 |
| 4439019 | Zoom lens barrel with single-ring continuous focusing | — | 1984-03-27 |
| 4421389 | Macro zoom lens barrel | — | 1983-12-20 |
| 4411498 | Zoom lens barrel | — | 1983-10-25 |
| 4269497 | Lens barrel for both priorities or shutter speed priority mode automatic exposure system | Sunao Ishizaka, Yoshitaka Araki | 1981-05-26 |
| 4264178 | Diaphragm device of a photographic lens | — | 1981-04-28 |