Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4528961 | Method of and system for lean-controlling air-fuel ratio in electronically controlled engine | Kenji Katoh | 1985-07-16 |
| 4491921 | Method and apparatus for controlling the air fuel ratio in an internal combustion engine | Shinichi Sugiyama, Takehisa Yaegashi | 1985-01-01 |
| 4459669 | Method and apparatus for controlling the air-fuel ratio in an internal combustion engine | Takehisa Yaegashi, Shinichi Sugiyama | 1984-07-10 |
| 4458319 | Method and apparatus for controlling the air-fuel ratio in an internal combustion engine | Takehisa Yaegashi, Shinichi Sugiyama | 1984-07-03 |