Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9394226 | 3,4-dialkylbiphenyldicarboxylic acid compound, 3,4-dicarboalkoxybiphenyl-3′,4′-dicarboxylic acid and corresponding acid anhydrides, and processes for producing these compounds | Yasushi Yamamoto, Yasutaka Yoshida, Hikaru Yatabe, Tetsurou Tsuji | 2016-07-19 |
| 8859801 | 3,4-dialkylbiphenyldicarboxylic acid compound, 3,4-dicarboalkoxybiphenyl-3', 4'-dicarboxylic acid and corresponding acid anhydrides, and processes for producing these compounds | Yasushi Yamamoto, Yasutaka Yoshida, Hikaru Yatabe, Tetsurou Tsuji | 2014-10-14 |
| 8541615 | Method for producing biphenyltetracarboxylic acid tetraester | Masayuki Nishio, Hiroaki Imajima, Takato Nakamura | 2013-09-24 |