Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4287278 | Two superimposed ion current formed images using photoconductive screen gives wider potential range for gradation control in electrophotography | Tatsuo Ohta, Sohji Shinozaki, Hideo Ohba | 1981-09-01 |