Issued Patents All Time
Showing 1–25 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8564388 | Relay, control circuit, and method for controlling control circuit | Yuji Hirao | 2013-10-22 |
| 6657762 | Optical barrier device | Toshihito Shirai | 2003-12-02 |
| 6504485 | Monitoring apparatus and control apparatus for traffic signal lights | Yoshitaka Jinno, Yoshiharu Ozaki, Norihiro Okada, Heisaku Mazawa, Hidetoshi Fujimoto +2 more | 2003-01-07 |
| 6459656 | Information generating apparatus using elastic waves | Masayoshi Sakai, Toshihito Shirai, Akira Morisada, Hitoshi Nozawa, Katsuichi Inose | 2002-10-01 |
| 6434025 | Power supply unit | Toshihito Shirai, Masayoshi Sakai, Takayuki Yuasa | 2002-08-13 |
| 6334077 | Operation apparatus for press | Masayoshi Sakai, Iwashige Takahashi, Yukio Hata | 2001-12-25 |
| 6292524 | Counting apparatus and rotation stopped detection apparatus which uses a counting apparatus | Masayoshi Sakai | 2001-09-18 |
| 6292432 | Information generating apparatus using elastic waves | Masayoshi Sakai, Toshihito Shirai, Akira Morisada, Hitoshi Nozawa, Katsuichi Inose | 2001-09-18 |
| 6272001 | Emergency stop switch and emergency stop switch circuit | — | 2001-08-07 |
| 6246503 | Optical barrier apparatus | Norihiro Asada | 2001-06-12 |
| 6239956 | Fail-safe timing circuit and on-delay circuit using the same | Toshihito Shirai | 2001-05-29 |
| 6185028 | Optical barrier apparatus | Norihiro Asada | 2001-02-06 |
| 6184799 | Monitoring apparatus and control apparatus for traffic signal lights | Yoshitaka Jinno, Yoshiharu Ozaki, Norihiro Okada, Heisaku Mazawa, Hidetoshi Fujimoto +2 more | 2001-02-06 |
| 6178027 | Optical barrier apparatus | Norihiro Asada | 2001-01-23 |
| 6148055 | Counter and a revolution stop detection apparatus using the counter | Masayoshi Sakai | 2000-11-14 |
| 6047634 | Fail-safe automatic sliding operation control apparatus for press | Toshihito Shirai, Masayoshi Sakai | 2000-04-11 |
| 6046834 | Optical barrier | Norihiro Asada | 2000-04-04 |
| 6034449 | Load drive circuit | Masayoshi Sakai | 2000-03-07 |
| 6031790 | Information generator using elastic wave | Masayoshi Sakai, Toshihito Shirai, Akira Morisada, Hitoshi Nozawa, Katsuichi Inose | 2000-02-29 |
| 6002249 | Rotation detection sensor | — | 1999-12-14 |
| 5905354 | Motor stopped verification sensor | Junpei Tajima, Toshihito Shirai | 1999-05-18 |
| 5903517 | Moving body control apparatus | Masayoshi Sakai | 1999-05-11 |
| 5867775 | Fail-safe signal transmitting apparatus producing a logical product of an input signal and a carrier signal | Toshihito Shirai, Hiroji Anzai | 1999-02-02 |
| 5861813 | Safety securing device | — | 1999-01-19 |
| 5825144 | Drive control apparatus for a rotating machine | Masatoshi Suzuki, Masayoshi Sakai | 1998-10-20 |