Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365254 | Two-color recording paper and method and recording apparatus utilizing _the two-color recording paper | Masaru Ozawa, Toshio Shimizu | 1982-12-21 |
| 4328977 | Recording paper capable of recording images in two colors | Masaru Ozawa, Toshio Shimizu | 1982-05-11 |