Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31707 | Method and apparatus for electrically biasing developing electrode of electrophotographic device | Seiichi Miyakawa | 1984-10-16 |
| 4330749 | Electrometer apparatus | Susumu Tatsumi, Chikara Imai | 1982-05-18 |
| 4318042 | Electrometer probe | Susumu Tatsumi, Chikara Imai | 1982-03-02 |
| 4279498 | Electrostatographic copying apparatus with automatic toner density control | Susumu Tatsumi, Chikara Imai, Yasushi Koichi | 1981-07-21 |
| 4277549 | Copy image adjustment method | Susumu Tatsumi, Chikara Imai | 1981-07-07 |
| 4266870 | Electrostatographic apparatus comprising developing bias means | Susumu Tatsumi, Chikara Imai | 1981-05-12 |
| 4213693 | Electrostatographic apparatus comprising improved developing bias control | Chikara Imai, Susumu Tatsumi | 1980-07-22 |