Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6519932 | Exhaust gas purification apparatus and method for an internal combustion engine | Hirofumi Ohuchi, Satoshi Wachi, Hideaki Katashiba | 2003-02-18 |
| 6345498 | Exhaust gas purifier for internal combustion engine | Satoshi Wachi, Hideaki Katashiba, Hirofumi Ohuchi | 2002-02-12 |
| 6279537 | Air fuel ratio control apparatus for an internal combustion engine | Hideaki Katashiba, Satoshi Wachi, Hirofumi Ohuchi | 2001-08-28 |