Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4608003 | Seal arrangement for vane type air pumps | Isao Fujii | 1986-08-26 |
| 4526148 | Air-fuel ratio control system for an internal combustion engine | Kazuo Otsuka, Eiji Kishida | 1985-07-02 |
| 4503479 | Electronic circuit for vehicles, having a fail safe function for abnormality in supply voltage | Kazuo Otsuka, Shumpei Hasegawa | 1985-03-05 |
| 4478199 | Method of controlling exhaust-gas recirculation in internal combustion engine | Kazuo Otsuka, Eiji Kishida | 1984-10-23 |
| 4450812 | Electric control system for internal combustion engines, having fail safe function for engine condition detecting sensors | Kazuo Otsuka, Shumpei Hasegawa | 1984-05-29 |
| 4450680 | Air/fuel ratio control system for internal combustion engines, having secondary air supply control | Kazuo Otsuka, Hasegawa Shumpei | 1984-05-29 |
| 4434764 | Air/fuel ratio feedback control system for internal combustion engines, having atmospheric pressure-dependent fail safe function for O.sub.2 sensor | Shumpei Hasegawa, Kazuo Otsuka | 1984-03-06 |
| 4414950 | Fail safe device for air/fuel ratio feedback control system | Kazuo Otsuka, Shumpei Hasegawa | 1983-11-15 |
| 4407243 | Air/fuel ratio control system having function of controlling supply of secondary air into intake pipe of internal combustion engine | Kazuo Otsuka, Shumpei Hasegawa | 1983-10-04 |
| 4401080 | Air/fuel ratio control system for internal combustion engines, having air/fuel ratio control function at engine acceleration | Kazuo Otsuka, Shumpei Hasegawa | 1983-08-30 |
| 4399792 | Air/fuel ratio control system for internal combustion engines, having engine warming-up detecting means | Kazuo Otsuka, Shumpei Hasegawa | 1983-08-23 |
| 4393842 | Air/fuel ratio control system for internal combustion engines, having atmospheric pressure compensating function | Kazuo Otsuka, Shumpei Hasegawa | 1983-07-19 |
| 4393843 | Air-fuel ratio feedback control system for internal combustion engines, having function of correcting position of air/fuel ratio control valve actuator | Kazuo Otsuka, Shumpei Hasegawa | 1983-07-19 |
| 4383409 | Air/fuel ratio control system for internal combustion engines, having function of detecting air/fuel ratio control initiating timing | Kazuo Otsuka, Shumpei Hasegawa | 1983-05-17 |
| 4380988 | Air/fuel ratio control system for internal combustion engines, having exhaust gas recirculation control function | Kazuo Otsuka, Shumpei Hasegawa | 1983-04-26 |
| 4380985 | Flow rate control system for fluid being supplied to an internal combustion engine, having initial position setting function for flow rate control valve actuator | Kazuo Otsuka, Shumpei Hasegawa | 1983-04-26 |
| 4377142 | Air/fuel ratio control system having an evaporated fuel purging control arrangement | Kazuo Otsuka, Shumpei Hasegawa | 1983-03-22 |
| 4375800 | Control system for internal combustion engines, provided with an exhaust gas recirculation control having a fail safe function | Kazuo Otsuka, Shumpei Hasegawa | 1983-03-08 |
| 4375797 | Air/fuel ratio feedback control system for internal combustion engines | Kazuo Otsuka, Shumpei Hasegawa | 1983-03-08 |
| 4371822 | Control device for pulse motors, having a fail safe function | Kazuo Otsuka, Shumpei Hasegawa | 1983-02-01 |
| 4367713 | Air/fuel ratio control system for internal combustion engines, having air/fuel control function at engine deceleration | Kazuo Otsuka, Shumpei Hasegawa | 1983-01-11 |
| 4364359 | Control system for internal combustion engines, having function of detecting abnormalities in engine speed signal detecting system | Kazuo Otsuka, Shumpei Hasegawa | 1982-12-21 |