Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321631 | Control method and device for reproducing a halftone dot cut away along a picture outline | Isao Saito, Makoto Hirosawa | 1982-03-23 |
| 4310234 | Supplementary amount of developing solution determining method for a film developer | Isao Saito, Makoto Hirosawa, Tetsuo Hohki | 1982-01-12 |