Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4603970 | Apparatus for inhibiting copying of confidential documents | Katsuhiko Ishikawa, Naoki Yokoi | 1986-08-05 |
| 4332851 | Receptor sheet for electrophotography | Hiroyoshi Hosomura, Eiji Yoshimura | 1982-06-01 |