Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8013108 | Process for producing 2, 3, 3′, 4′,-biphenyltetracarboxylic dianhydride | Kenichiro Sasaki | 2011-09-06 |
| 7417108 | Process for production of 2,3,3′,4′-biphenyltetracarboxylic dianhydride | Takeshi Matsuzaki, Kenichiro Sasaki | 2008-08-26 |