Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4272182 | Apparatus for controlling the density of a reproduced image in an electrophotographic copying machine | Shunichi Abe, Fumio Iwai, Hiroshi Kuru | 1981-06-09 |
| 4248526 | Circuit for detecting door state in copying apparatus | Abe Shunichi | 1981-02-03 |
| 4248527 | Apparatus for controlling toner concentration in electrophotographic copying machines | Hiroshi Kuru | 1981-02-03 |
| 4213692 | Bias voltage switching circuit for controlling concentration of image in copying apparatus | Shunichi Abe | 1980-07-22 |