Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620948 | Process for the preparation of maleic anhydride | Itaru Sawaki, Hideo Suwa, Yasunori Ishimura, Yoshiaki Iizuka | 2003-09-16 |
| 6310219 | Process for the production of maleic anhydride | Itaru Sawaki, Hideo Suwa, Yasunori Ishimura, Yoshiaki Iizuka | 2001-10-30 |
| 6054109 | Method of purifying aqueous solution of hydrogen peroxide | Noriyuki Saito | 2000-04-25 |