Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6452046 | Process for producing 2,3,5,6-tetrachloro-1,4-benzenedicarboxylic acid | Kimitoshi Sano, Kenichi Komatsubara, Teruhiko Ishii | 2002-09-17 |
| 4769493 | Process for producing tetrafluorophthalic acid | Haruaki Ito, Toshiaki Shimizu, Nobuo Ishikawa, Masaaki Shimizu | 1988-09-06 |