Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5227842 | Electrophotographic image forming apparatus which controls developer bias based on image irregularity | Kouji Hayashi, Takashi Bisaiji, Takeyoshi Sekine, Noboru Sawayama, Takayuki Maruta +4 more | 1993-07-13 |