Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4269921 | Method for preventing degradation of a liquid developer for electrostatic recording | Hiroshi Tanaka | 1981-05-26 |
| 4259428 | Liquid developer for electrostatic latent image | — | 1981-03-31 |
| 4194020 | Method for preventing degradation of a liquid developer for electrostatic recording | Hiroshi Tanaka | 1980-03-18 |