Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7971428 | Exhaust gas purification device for internal combustion engine | Hiroyuki Kimura, Mitsutaka Kojima, Kojiro Okada, Kei Shigahara, Michihiro Hata +3 more | 2011-07-05 |
| 7730721 | Exhaust gas purification device of internal combustion engine | Hiroyuki Kimura, Mitsutaka Kojima, Kojiro Okada, Kei Shigahara, Michihiro Hata +3 more | 2010-06-08 |