Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6698280 | Failure test apparatus for fuel-vapor purging system | Noriyuki Iden, Tokiji Ito, Yuichi Kohara, Shuichi Hanai | 2004-03-02 |
| 6523398 | Diagnosis apparatus for fuel vapor purge system | Shuichi Hanai, Tokiji Itoh, Yuichi Kohara, Noriyuki Iden | 2003-02-25 |
| 6431160 | Air-fuel ratio control apparatus for an internal combustion engine and a control method of the air-fuel ratio control apparatus | Takayuki Sugiyama | 2002-08-13 |
| 6318161 | Internal combustion engine diagnostic apparatus | Hidetoshi Amano | 2001-11-20 |
| 5724809 | Device for determining deterioration of a catalytic converter for an engine | Noritake Mitsutani | 1998-03-10 |
| 4800863 | System for controlling intake pressure in a supercharged internal combustion engine | Hideo Miyagi, Fumiaki Ohya, Koji Fukushima | 1989-01-31 |
| 4766873 | System for controlling intake pressure in a supercharged internal combustion engine | Hideo Miyagi, Fumiaki Ohya, Koji Fukushima | 1988-08-30 |