Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996030 | Method for cleaning exhaust gases | Koichi Kitahara, Takashi Shimada, Noboru Akita, Tadashi Hiramoto | 1991-02-26 |
| 4910001 | Method for cleaning gas containing toxic component | Koichi Kitahara, Noboru Akita, Takashi Shimada, Tadashi Hiramoto | 1990-03-20 |