Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4374961 | Method for manufacturing heat-stable polyesters using phosphonic acid compounds with cyclic carbonates and catalyst | Kazushige Kudo, Yoshihiro Arai, Ryoichi Tsurutani | 1983-02-22 |