Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5565609 | Method of purifying aromatic dicarboxylic acids | Hiroyasu Ohno, Kenji Shimamoto | 1996-10-15 |
| 4283570 | Process for preparing resorcinol | Hiroaki Nakagawa, Takayuki Nakamura | 1981-08-11 |