Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7260326 | Wavelength-division multiplex system and a method of automatically setting conversion wavelengths of such a system | Kazutaka Kikuta, Shingo Hara | 2007-08-21 |
| 6312358 | Constant speed drive apparatus for aircraft generator and traction speed change apparatus | Tatsuhiko Goi, Eiichi Yamakawa | 2001-11-06 |
| 6254504 | Power transmission apparatus for helicopter | Tatsuhiko Goi, Eiichi Yamakawa | 2001-07-03 |
| 5094817 | Apparatus for quantitative determination of trihalomethanes | Toyoaki Aoki, Yoshiharu Tanaka, Hiroshi Hoshikawa | 1992-03-10 |
| 4960711 | Method for the quantitative determination of trihalomethanes | Toyoaki Aoki, Yoshiharu Tanaka, Hiroshi Hoshikawa | 1990-10-02 |
| 4907473 | Differential mechanism of a four-wheel driving apparatus for vehicles | Yuuki Fujitani | 1990-03-13 |
| 4898259 | Four-wheel drive apparatus for automotive vehicles | Yuuki Fujitani | 1990-02-06 |
| 4328412 | Motor-driven welding machine | Toshihiko Watanabe, Naoki Takenouchi, Mitsurou Soga | 1982-05-04 |