Issued Patents All Time
Showing 76–90 of 90 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4715693 | Vari-focal photographic lens system of rear lens group exchange type | Hiroshi Takase, Masaki Imaizumi | 1987-12-29 |
| 4708442 | Varifocal lens system | Hiroshi Takase, Masaki Imaizumi | 1987-11-24 |
| 4668054 | Vari-focal photographic lens system of lens group exchange type | Hiroshi Takase, Masaki Imaizumi | 1987-05-26 |
| 4653870 | Compact vari-focal photographic lens system | Masaki Imaizumi, Hiroshi Takase | 1987-03-31 |
| 4635125 | Real-time light-measuring system for single-lens reflex cameras | Shin-ichi Mihara, Toshihiro Imai, Kazuo Ikari | 1987-01-06 |
| 4618234 | Finder optical system for cameras | Kazuo Ikari | 1986-10-21 |
| 4529286 | Attachment lens system for single-lens reflex cameras | — | 1985-07-16 |
| 4461547 | Lens hood with an eccentrically disposed light intercepting body for a camera | Kazuo Ikari | 1984-07-24 |
| 4436382 | Retrofocus type super wide angle lens system | Kazuo Ikari | 1984-03-13 |
| 4367927 | Zoom lens system | — | 1983-01-11 |
| 4315669 | Wide-angle zoom lens system | — | 1982-02-16 |
| 4291952 | Gauss type lens system | Hiroshi Takase | 1981-09-29 |
| 4264137 | Compact retrofocus type lens system | — | 1981-04-28 |
| 4212517 | Photographic lens system | — | 1980-07-15 |
| 4188091 | Cata-dioptric objective lens system | — | 1980-02-12 |