Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877822 | Epoxy resin composition | Kunio Itoh, Koji Futatsumori, Kazutoshi Tomiyoshi, Hisashi Shimizu | 1989-10-31 |
| 4876298 | Epoxy resin composition | Kunio Itoh | 1989-10-24 |
| 4859722 | Epoxy resin composition | Kazutoshi Tomiyoshi | 1989-08-22 |