Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6023930 | Black smoke eliminating device for internal combustion engine and exhaust gas cleaning system including the device | Yukihiro Abe, Yoshihide Iwamoto | 2000-02-15 |
| 6021639 | Black smoke eliminating device for internal combustion engine and exhaust gas cleaning system including the device | Yukihiro Abe, Yoshihide Iwamoto | 2000-02-08 |