Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795795 | Catalytic preparation of polyamide or polyamide-polymide with N,N'-dimethyl alkylene urea solvent | Kazumi Mizutani, Masanori Osawa, Kohei Shizuka, Toshihiro Toyoda, Hiromi Nakano | 1989-01-03 |