Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE37289 | Induction system for engine | Tetsuji Yamazaki, Takashi Hara | 2001-07-24 |
| 5970614 | Method for forming valve seats | Shuhei Adachi, Hiroyuki Sakai | 1999-10-26 |
| 5687685 | Valve seat and method | Masaaki Yoshikawa | 1997-11-18 |
| 5551393 | Induction system for engine | Tetsuji Yamazaki, Takashi Hara | 1996-09-03 |
| 5379729 | Cylinder head cooling structure for multi-valve engine | Minoru Yonezwa | 1995-01-10 |
| 5101777 | Automobile engine structure | Yoichi ONISHI | 1992-04-07 |
| 5074257 | Air intake device for an engine | Masashi Murakami | 1991-12-24 |
| 4649873 | Oil return system for overhead cam engine | — | 1987-03-17 |
| 4584975 | Oil drain arrangement for internal combustion engine | Masatoshi Ohmi | 1986-04-29 |