Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4195260 | Apparatus for sensing deterioration of developing substance including ferromagnetic carrier and non-magnetic toner particles | Koji Sakamoto, Susumu Tatsumi | 1980-03-25 |
| 4194830 | Development apparatus | Teruyuki Ohnuma, Kaoru Shimizu, Hajime Oyama | 1980-03-25 |