Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4586811 | Confidential document reproduction prevention method | Keishi Kubo, Takaaki Miyashita | 1986-05-06 |
| 4306014 | Photo-sensitive and heat-sensitive composition and recording element using same | Makoto Kunikane, Kiyoshi Taniguchi, Tetu Yamamuro | 1981-12-15 |