Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7333182 | Range finder and method of reducing signal noise therefrom | Makoto Tanaka, Yoshinari Enomoto | 2008-02-19 |
| 5602944 | Object-detecting system for optical instrument | Shotaro Yokoyama | 1997-02-11 |
| D362258 | Distance measuring unit for an automatic focusing camera | Akio Izumi | 1995-09-12 |
| D362259 | Distance measuring unit for an automatic focusing camera | Akio Izumi | 1995-09-12 |
| 5233180 | Light sensor having an integration circuit | Yoshio Tsuruta, Shotaro Yokoyama | 1993-08-03 |
| 5206525 | Electric element capable of controlling the electric conductivity of .pi.-conjugated macromolecular materials | Hiromichi Yamamoto, Hideo Kumehara | 1993-04-27 |
| 5198660 | Optical sensing circuit including an integral capacity | Shotaro Yokoyama | 1993-03-30 |
| 5155347 | Object detector for an optical instrument | — | 1992-10-13 |
| 5113215 | Image position detecting device | — | 1992-05-12 |
| 4969113 | Method and apparatus for measuring sensor output | Shotaro Yokoyama | 1990-11-06 |
| 4958362 | Clock signal generating circuit | Shotaro Yokoyama | 1990-09-18 |
| 4956546 | Method and apparatus for aligning image sensors with an optical system in an optical apparatus | Shotaro Yokoyama | 1990-09-11 |
| 4916307 | Light intensity detecting circuit with dark current compensation | Shotaro Yokoyama | 1990-04-10 |
| 4912497 | Device for detecting the focal value for the focusing of optical apparatus | — | 1990-03-27 |
| 4904855 | Method for detecting relative position of an image pair including contrast detection | Shotaro Yokoyama | 1990-02-27 |
| 4847483 | Device for measuring light intensity received by a photosensor | Shotaro Yokoyama | 1989-07-11 |
| 4802194 | Time measuring system with large dynamic range | — | 1989-01-31 |
| 4737942 | Time measuring device | — | 1988-04-12 |
| 4727559 | Weighted event counting circuit | Shotaro Yokoyama, Seiichi Isoguchi | 1988-02-23 |
| 4668084 | Distance measuring equipment | Kiziro Suzuki, Takashi Tsutsumi, Shotaro Yokoyama | 1987-05-26 |
| 4659205 | Automatic focusing apparatus | Shotaro Yokoyama | 1987-04-21 |
| 4652119 | Range finder | Kiziro Suzuki, Seiichi Isoguchi, Koji Watanabe, Shotaro Yokoyama | 1987-03-24 |
| 4640613 | Image data comparison circuit for rangefinders | Shotaro Yokoyama | 1987-02-03 |
| 4611910 | Range finder | Kiziro Suzuki, Takashi Tsutsumi, Shotaro Yokoyama | 1986-09-16 |
| 4606630 | Rangefinder | Hiromu Haruki, Shotaro Yokoyama | 1986-08-19 |