Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645804 | Method for cleaning exhaust gas containing nitrogen oxides | Satoshi Sumiya, Kiyohide Yoshida, Yoshikazu Takahashi, Masataka Furuyama, Akira Abe +2 more | 1997-07-08 |
| 5141714 | Exhaust gas cleaner | Akira Obuchi, Hidenori Yoshiyama, Akihiko Ohi, Hyogoro Aoyama, Hideo Ohuchi +7 more | 1992-08-25 |