Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5097807 | Combustion chamber for diesel engines | Hiroshi Oikawa, Minoru Matsui, Tadao Ozawa | 1992-03-24 |
| 4953528 | Direct injection-type diesel engines | Hiroshi Oikawa, Tadaaki Matsuhisa, Tadao Ozawa | 1990-09-04 |