Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352855 | Transfer-onto-plain paper type pressure-sensitive copying paper | Shigetoshi Hiraishi, Sadao Morishita | 1982-10-05 |
| 4347283 | Transfer-onto-plain paper type pressure-sensitive copying paper | Shigetoshi Hiraishi | 1982-08-31 |