Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6395245 | Method for preparing carbon-containing composition | Tsuyoshi Yasutake, Hideaki Miyashita, Hiroshi Masuda, Tadashi Yoshino, Fumio Nakamura +1 more | 2002-05-28 |
| 6284209 | Agent for and process of treating exhaust gas | Isao Harada | 2001-09-04 |
| 5728642 | Exhaust gas treating agent and a method of treating exhaust gas using the agent | Makoto Aritsuka, Isao Harada | 1998-03-17 |