Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670443 | Exhaust gas cleaner and method for cleaning exhaust gas | Akira Abe, Kiyohide Yoshida | 1997-09-23 |
| 5670444 | Exhaust gas cleaner and method for cleaning same | Kiyohide Yoshida, Gyo Muramatsu, Akira Abe | 1997-09-23 |
| 5658542 | Exhaust gas cleaner and method for cleaning same | Kiyohide Yoshida, Gyo Muramatsu, Akira Abe | 1997-08-19 |
| 5658543 | Exhaust gas cleaner and method for cleaning same | Kiyohide Yoshida, Gyo Muramatsu, Akira Abe | 1997-08-19 |
| 5656249 | Exhaust gas cleaner and method for removing nitrogen oxides | Kiyohide Yoshida, Akira Abe, Tatsuo Miyadera | 1997-08-12 |