Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4694799 | Ignition timing control system for internal combustion engines | Shizuo Yagi, Yoshiaki Hirosawa, Makoto Kawai | 1987-09-22 |
| 4608003 | Seal arrangement for vane type air pumps | Shin Narasaka | 1986-08-26 |
| 4494504 | Stratified burn internal combustion engine | Shizuo Yagi, Junji Otani, Hiroshi Kogure | 1985-01-22 |
| 4491104 | Torch ignition type internal combustion engine | Hiroyuki Nishimura, Masaaki Kato | 1985-01-01 |
| 4489686 | Torch ignition type internal combustion engine | Shizuo Yagi, Yoshio Ajiki | 1984-12-25 |
| 4182287 | Torch passage construction for stratified charge engine | Shizuo Yagi, Masayasu Nishikawa | 1980-01-08 |
| 4182285 | Cylindrical torch passage construction for internal combustion engine | Shizuo Yagi, Masayasu Nishikawa | 1980-01-08 |
| 4182284 | Divided auxiliary combustion chamber for internal combustion spark ignition engines | Shizuo Yagi, Hiroshi Kogure | 1980-01-08 |
| 4182286 | Tapered torch passage construction for internal combustion | Shizuo Yagi, Atsushi Tanaka | 1980-01-08 |