Issued Patents All Time
Showing 26–50 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6540015 | Heat exchanger and method for manufacturing the same | Norihide Kawachi, Ken Yamamoto, Takeshi Okinotani, Toshiya Kouga, Norimasa Baba +3 more | 2003-04-01 |
| 5649354 | Method of manufacturing a fuel injector core | Hiroyuki Fujii, Hitoshi Ichikawa | 1997-07-22 |
| 5567493 | Die for extrusion of multi-hole tube and multi-hole tube made with the die | Tokuo Shirai, Ken Yamamoto, Shingoro Fukuoka | 1996-10-22 |
| 5309460 | Semiconductor laser with encapsulated lead members | Yoshitsugu Fujimaki, Kenji Nagashima, Morito Yokoyama, Kunio Tsuboi, Atsushi Ogasawara | 1994-05-03 |
| 4787719 | Zoom lens system | — | 1988-11-29 |
| 4747677 | Lens system having aberrations corrected at near distance focusing | Yoshiaki Horikawa, Yasuzi Ogata | 1988-05-31 |
| 4730907 | Compact zoom lens system | Juro Kikuchi | 1988-03-15 |
| 4721371 | Variable focal length lens system | — | 1988-01-26 |
| 4662723 | Flare stop for a large aperture ratio zoom lens system | — | 1987-05-05 |
| 4635125 | Real-time light-measuring system for single-lens reflex cameras | Shin-ichi Mihara, Kazuo Ikari, Toru Fujii | 1987-01-06 |
| 4603948 | Large-aperture wide-angle zoom lens system | — | 1986-08-05 |
| 4562344 | Automatic focus detecting mechanism for endoscopes | Shin-ichi Mihara, Ken-ichi Nakahashi, Youichi Iba, Masaki Imaizumi, Akio Taira | 1985-12-31 |
| 4506958 | Compact zoom lens system | — | 1985-03-26 |
| 4504124 | Zoom lens system | Yasuzi Ogata | 1985-03-12 |
| 4435049 | Telephoto lens system | Yoshiaki Horikawa | 1984-03-06 |
| 4412127 | In-focus detector for binocular stereoscope | — | 1983-10-25 |
| 4396255 | Standard photographic lens system | — | 1983-08-02 |
| 4391521 | Photometer having asymmetrical aperture and with compensation for direction of incidence | Toyotaka Yamada | 1983-07-05 |
| 4390250 | Photographic lens system | — | 1983-06-28 |
| 4389099 | Photographic lens system | — | 1983-06-21 |
| 4352544 | Wide-angle photographic camera lens system | — | 1982-10-05 |
| 4303323 | Focus correcting device for use in a rangefinder camera | Toyotaka Yamada | 1981-12-01 |
| 4303313 | Photographic lens system | Hiroshi Takase | 1981-12-01 |
| 4264138 | Photographic lens system | — | 1981-04-28 |
| 4252424 | Focusing optical system for single-lens reflex cameras | Yoshisada Hayamizu | 1981-02-24 |