Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7454897 | Exhaust purifier for diesel engine | — | 2008-11-25 |
| 6763799 | Internal combustion engine and control method of the same | Takekazu Ito, Hiroki Matsuoka, Tatsumasa Sugiyama, Yasuhiro Ohtsubo, Taro Aoyama +4 more | 2004-07-20 |
| 4919714 | Method and apparatus for refining steel | Saburo Sugiura, Senji Fujita, Hiroya Nakata, Tetsuo Okamoto, Yoshio Inagaki +1 more | 1990-04-24 |