Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4328265 | Process for preparation of a transfer sheet for electrostatic photography or printing | Susumu Yamaura, Yasutoki Kamezawa, Tatsuo Aizawa | 1982-05-04 |
| 4320186 | Electrographic method for preparing original for projection and transfer film for use in method | Shoji Matsumoto, Tatsuo Aizawa | 1982-03-16 |