Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5108394 | Bone fixing device | Takahide Kurokawa, Isao Ohnishi, Shigemitsu Ogawa, Tsuneo Yokotsuka, Akio Nakazawa | 1992-04-28 |
| 4957356 | Finder device | Kouji Oizumi | 1990-09-18 |
| 4951794 | Electromagnetic clutch with a structure which is simple in assembly | — | 1990-08-28 |
| 4941070 | Flash device for a camera | Yukio Ogawa, Kazuo Ikawa, Toru Shoji, Hideo Tamamura, Hiroki Nakayama | 1990-07-10 |
| 4899569 | Method for manufacturing a rotor frame of an electromagnetic clutch | Kozaburo Tsuchiya | 1990-02-13 |
| 4896756 | Apparatus for preventing heat damage in an electromagnetic clutch | — | 1990-01-30 |
| 4874973 | Method and arrangement for securing a pulley to a rotor in an electromagnetic clutch | Genzo Yanai | 1989-10-17 |
| 4871243 | Photographic lens of improved near distance performance | Hideki Ogawa | 1989-10-03 |
| 4865434 | Zoom lens capable of selecting a focal length beyond a standard focal length range | Sadatoshi Takahashi, Nozomu Kitagishi, Keiji Ikemori, Tsunefumi Tanaka | 1989-09-12 |
| 4830477 | Zoom lens capable of obtaining focal lengths beyond a variable focal length range | Sadatoshi Takahashi, Keiji Ikemori, Nozomu Kitagishi, Tsunefumi Tanaka, Kikuo Momiyama | 1989-05-16 |
| 4828090 | Electromagnetic clutch | — | 1989-05-09 |
| 4807983 | Photographic lens of extended focusing range with improved stability of picture quality | — | 1989-02-28 |
| 4799578 | Apparatus for preventing heat damage in an electromagnetic clutch | — | 1989-01-24 |
| 4781446 | Zoom lens having a capability of introducing special features into image formats | Tsunefumi Tanaka, Nozomu Kitagishi, Sadatoshi Takahashi, Keiji Ikemori | 1988-11-01 |
| 4775228 | Zoom lens | Keiji Ikemori | 1988-10-04 |
| 4711534 | Zoom lens able to obtain focal lengths beyond the zooming range | Sadatoshi Takahashi, Keiji Ikemori, Nozomu Kitagishi, Tsunefumi Tanaka, Kikuo Momiyama | 1987-12-08 |
| 4632283 | Molten metal discharging device | Kazumi Arakawa, Masuo Sugie, Takashi Watanabe, Takumi Nishio, Toshio Kawamura +1 more | 1986-12-30 |
| 4616742 | Spring coupling for an electromagnetic clutch | — | 1986-10-14 |
| 4583721 | Molten metal discharging device | Kazumi Arakawa, Masuo Sugie, Takashi Watanabe, Takumi Nishio, Toshio Kawamura +1 more | 1986-04-22 |
| 4552005 | Method of making a clutch rotor for an electromagnetic clutch | — | 1985-11-12 |