Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874800 | Polyester resin composition | Tsuyoshi Minamisawa, Katsunori Endo, Shigeru Nezu | 1989-10-17 |
| 4831073 | Polyacetal composition and method of preparation thereof | Susumu Okushiro, Seiichi Higashiyama, Hiroyuki Miyaji | 1989-05-16 |