Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5305148 | Compact varifocal lens | Keiji Ikemori, Yoshinori Itoh | 1994-04-19 |
| 5270857 | Optical system for stabilizing an image | Nozomu Kitagishi, Shoichi Yamzaki | 1993-12-14 |
| 5270866 | Compact zoom lens | Keiji Ikemori, Yasuhisa Sato, Yasuyuki Yamada, Hiroki Nakayama, Takashi Matsushita | 1993-12-14 |
| 5253005 | Small-sized camera | Takeshi Koyama, Sadatoshi Takahashi, Nozomu Kitagishi | 1993-10-12 |
| 5125735 | Automatic multi-point distance measuring device | Takashi Matsushita | 1992-06-30 |
| 5055868 | Variable magnification finder of real image type | Yoshinori Itoh | 1991-10-08 |
| 4957356 | Finder device | Takashi Matsushita | 1990-09-18 |
| 4949107 | Camera having telescopic capability | Nozomu Kitagishi, Takeshi Koyama, Sadatoshi Takahashi | 1990-08-14 |
| 4871238 | Photographic optical device with variable magnification | Yasuhisa Sato, Yasuyuki Yamada, Hiroki Nakayama | 1989-10-03 |
| 4842395 | Finder of variable magnification | Yasuhisa Sato, Nozomu Kitagishi, Yasuyuki Yamada, Hiroki Nakayama | 1989-06-27 |
| 4830474 | Variable magnification optical system | Hiroki Nakayama, Yasuhisa Sato, Yasuyuki Yamada | 1989-05-16 |
| 4770508 | Conversion lens releasably attached behind master lens | Yasuyuki Yamada, Yasuhisa Sato, Hiroki Nakayama | 1988-09-13 |
| 4757336 | View finder of variable magnification | Hiroki Nakayama, Yasuhisa Sato, Yasuyuki Yamada | 1988-07-12 |
| 4751539 | Variable power finder | Yasuyuki Yamada, Yasuhisa Sato, Hiroki Nakayama | 1988-06-14 |
| 4726668 | Zoom lens of short total length | Hiroki Nakayama, Yasuhisa Sato, Yasuyuki Yamada | 1988-02-23 |
| 4702581 | Flash device for camera | Yasuyuki Yamada, Yasuhisa Sato, Hiroki Nakayama | 1987-10-27 |
| 4697882 | Beam splitter for changing optical paths small tilt | Yasuhisa Sato, Yasuyuki Yamada, Hiroki Nakayama | 1987-10-06 |
| 4652091 | Compact zoom lens with short back focal distance | Yasuhisa Sato, Yasuyuki Yamada, Hiroki Nakayama | 1987-03-24 |
| 4643536 | Rear conversion lens | Yasuyuki Yamada, Yasuhisa Sato, Hiroki Nakayama | 1987-02-17 |