Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5317267 | Spark plug voltage probe for use with an internal combustion engine | Hideji Yoshida, Yoshihiro Matsubara, Yasuo Ito, Takashi Suzuki | 1994-05-31 |
| 5313849 | Device for temporarily holding pressure sensor in place within spark plug attaching hole of cylinder head | Yoshiaki Matsubara, Takao Kojima | 1994-05-24 |
| 5294888 | Device for detecting misfire of an internal combustion engine by comparing voltage waveforms associated with ignition system | Takashi Suzuki, Yoshihiro Matsubara, Yuuichi Shimasaki, Takashi Hisaki | 1994-03-15 |
| 5269282 | Misfire detector for use in internal combustion engine | Hideji Yoshida, Yoshihiro Matsubara, Yasuo Ito | 1993-12-14 |
| 5253627 | Burning condition detecting device and burning control device in an internal combustion engine | Hideji Yoshida, Yoshihiro Matsubara, Yasuo Ito | 1993-10-19 |
| 5048952 | Liquid mixing ratio sensor | Yoshitaka Yamada | 1991-09-17 |
| 5046842 | Mixing ratio detecting device for composite liquid | Yoshitaka Yamada | 1991-09-10 |
| 4962746 | Mixing liquid ratio detector device | Kiyotaka Ohno | 1990-10-16 |
| 4912319 | Detector device for mixing ratio for gasoline and alcohol or the like | Yoshihiro Matsubara, Kiyotaka Ohno | 1990-03-27 |
| 4895444 | Detector device for mixing ratio for gasoline and alcohol or the like | Yoshihiro Matsubara | 1990-01-23 |
| 4884066 | Deterioration detector system for catalyst in use for emission gas purifier | Toshiki Sawada | 1989-11-28 |
| 4843248 | Mixing ratio sensor for liquid fuel | Yoshihiro Matsubara | 1989-06-27 |
| 4824244 | Sensor for mixing ratio of gasoline and alcohol or the like | Yoshihiro Matsubara | 1989-04-25 |
| 4770129 | Sensor for mixing ratio of gasoline and alcohol | Yoshihiro Matsubara | 1988-09-13 |
| 4765880 | Air/fuel ratio sensor | Nobuhiro Hayakawa, Tetsusho Yamada, Kazunori Yokota | 1988-08-23 |