Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6701093 | Integral transmitter-receiver optical communication apparatus and a crosstalk preventive device therefor | Tatsuo Gotoh, Homu Takayama, Yoichi Kojima, Shunichiro Wakamiya | 2004-03-02 |
| 6666598 | Ribbon cassette, ribbon cartridge using ribbon protector, and printer using ribbon cassette and ribbon cartridge | Akihiro Moriyama, Yoshifumi Igari | 2003-12-23 |
| 6384944 | Integral transmitter-receiver optical communication apparatus | Homu Takayama, Tatsuo Gotoh, Yoichi Kojima, Shunichiro Wakamiya | 2002-05-07 |
| 6141144 | Optical axis correcting system | Shunichiro Wakamiya, Tatsuo Gotoh, Homu Takayama, Yoichi Kojima | 2000-10-31 |
| 6078442 | ND filter | Eijiroh Tada, Shunichiro Wakamiya, Masayuki Arai, Toru Shikano, Takayasu Shishido | 2000-06-20 |
| 6059866 | Air washer | Shuzo Akita, Tsuguaki Uemura, Masaaki Shinohara | 2000-05-09 |
| 5600488 | Projection lens assembly and projector | Nobutaka Minefuji, Yasuyuki Tejima | 1997-02-04 |
| 4979808 | Endoscope objective lens system | Ryota Ogawa | 1990-12-25 |
| 4874220 | Viewing optical system for use with endoscope | — | 1989-10-17 |
| 4770516 | Telephoto lens system capable of closeup shooting | — | 1988-09-13 |
| 4653876 | Close-up lens system | — | 1987-03-31 |
| 4289385 | Photographic lens with rear stop diaphragm | — | 1981-09-15 |