Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842951 | Thermoforming resin laminate sheet | Toyokazu Yamada, Masao Miyama, Hideo Sugimura | 1989-06-27 |
| 4801041 | Easily-openable packaging container and lid for the same | Yukio Takata | 1989-01-31 |