Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6283478 | Piston ring structural body and method of mounting the piston ring structural body | Michio Okamoto | 2001-09-04 |
| 6257590 | Sealing structure and method of mounting piston ring structural body for use in the sealing stucture | Yoshihiko Masuda, Michio Okamoto | 2001-07-10 |
| 6205908 | Piston equipped with piston ring | Michio Okamoto | 2001-03-27 |
| 5125235 | Supercharged lean burn internal combustion engine | Hiromichi Yanagihara, Taiichi Mori | 1992-06-30 |
| 5063744 | Actuator for controlling intake pressure in sequential turbo-system | Shinobu Ishiyama, Kazuyoshi Ishisaka, Toshiyuki Maehara, Makoto Fujimori, Kimio Nemoto | 1991-11-12 |
| 4401072 | Combustion chamber of a compression-ignition type internal combustion engine | Sumio Ito, Hisashi Oki, Toshio Tanahashi | 1983-08-30 |
| 4275696 | Carburetor outer vent control device | Toshiro Yoshida | 1981-06-30 |
| 4237826 | Multi-cylinder internal combustion engine equipped with an accumulation chamber | Katsuhiko Motosugi, Setsuro Sekiya, Hidetaka Nohira, Sumio Ito, Hisashi Ohki | 1980-12-09 |
| 4230073 | Combustion chamber of an internal combustion engine | Hidetaka Nohira, Sumio Ito, Hisashi Oki | 1980-10-28 |
| 4223645 | Combustion chamber of an internal combustion engine | Hidetaka Nohira, Sumio Ito, Hisashi Oki | 1980-09-23 |
| 4208997 | Carburetor outer vent control device | Toshiro Yoshida | 1980-06-24 |