Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4416513 | Automatic and manual focus control for objective lens assembly | — | 1983-11-22 |
| 4275952 | Compact zoom lens barrel with high zooming ratio | — | 1981-06-30 |
| 4273423 | Zoom lens barrel assembly for constant magnification | — | 1981-06-16 |
| 4272160 | Shock absorbent shifting device | — | 1981-06-09 |
| 4258996 | Diaphragm control mechanism for camera objectives | Osamu Tanaka | 1981-03-31 |
| 4247169 | Lens barrel capable of axial zooming operation and with barrel window | — | 1981-01-27 |
| 4241982 | Zoom lens barrel capable of different directional operations | — | 1980-12-30 |
| 4226520 | Shock resistant lens device | — | 1980-10-07 |
| 4199227 | Shock resistant lens device with zoom and macrofocusing controls | Osamu Tanaka | 1980-04-22 |