Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8187756 | Fuel cell system | Nobuo Fujita, Hiroyuki Yumiya, Taisuke Miyamoto, Hiroyuki Sekine, Mituhiro Satou | 2012-05-29 |
| 5253005 | Small-sized camera | Takeshi Koyama, Nozomu Kitagishi, Kouji Oizumi | 1993-10-12 |
| 5144488 | Zoom lens | Hiroshi Endo | 1992-09-01 |
| 5000550 | Wide-angle type zoom lens having inner-focus lens | Koutaro Yano, Hiroshi Endo | 1991-03-19 |
| 4949107 | Camera having telescopic capability | Nozomu Kitagishi, Takeshi Koyama, Kouji Oizumi | 1990-08-14 |
| 4896950 | Zoom lens of high power varying ratio | Hiroshi Endo | 1990-01-30 |
| 4865434 | Zoom lens capable of selecting a focal length beyond a standard focal length range | Takashi Matsushita, Nozomu Kitagishi, Keiji Ikemori, Tsunefumi Tanaka | 1989-09-12 |
| 4852984 | Telephoto lens of large aperture ratio | Hideki Ogawa, Hiroshi Endo | 1989-08-01 |
| 4830477 | Zoom lens capable of obtaining focal lengths beyond a variable focal length range | Keiji Ikemori, Nozomu Kitagishi, Tsunefumi Tanaka, Takashi Matsushita, Kikuo Momiyama | 1989-05-16 |
| 4810072 | Zoom lens | — | 1989-03-07 |
| 4781446 | Zoom lens having a capability of introducing special features into image formats | Tsunefumi Tanaka, Takashi Matsushita, Nozomu Kitagishi, Keiji Ikemori | 1988-11-01 |
| 4749266 | Compact zoom lens having a large aperture and good aberation correction over an extended zooming range | Sadahiko Tsuji | 1988-06-07 |
| 4720180 | High magnification range zoom lens | Toshiaki Asano, Sadahiko Tsuji | 1988-01-19 |
| 4717245 | High relative aperture Gauss type lens | — | 1988-01-05 |
| 4711534 | Zoom lens able to obtain focal lengths beyond the zooming range | Takashi Matsushita, Keiji Ikemori, Nozomu Kitagishi, Tsunefumi Tanaka, Kikuo Momiyama | 1987-12-08 |
| 4696553 | Zoom lens having a large zoom ratio | Sadahiko Tsuji, Kazuo Fujibayashi | 1987-09-29 |
| 4695133 | High range zoom lens | Nozomu Kitagishi, Keiji Ikemori, Kikuo Momiyama, Tsunefumi Tanaka | 1987-09-22 |
| 4690513 | Wide angle high range zoom lens | Tsunefumi Tanaka | 1987-09-01 |
| 4687303 | Zoom lens system | Masatake Kato, Sadahiko Tsuji | 1987-08-18 |
| 4666257 | Compact zoom lens | Tsunefumi Tanaka, Keiji Ikemori, Nozomu Kitagishi, Kikuo Momiyama | 1987-05-19 |
| 4659187 | Zoom lens using elements made of plastic materials | Sadahiko Tsuji | 1987-04-21 |
| 4653874 | Zoom lens | Toshiaki Asano, Sadahiko Tsuji, Kazuo Fujibayashi, Masatake Kato | 1987-03-31 |
| 4639096 | High range zoom lens | Nozomu Kitagishi, Kikuo Momiyama, Keiji Ikemori, Tsunefumi Tanaka | 1987-01-27 |
| 4629294 | Zoom lens | Tsunefumi Tanaka, Nozomu Kitagishi, Keiji Ikemori, Kikuo Momiyama | 1986-12-16 |
| 4527858 | Uniform speed scanning lens having a high resolving power | Masamichi Tateoka | 1985-07-09 |