Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6025857 | Photosensitive member and electrostatic information recording method | Hiroyuki Obata, Minoru Utsumi | 2000-02-15 |
| 5981122 | Image recording method | Hiroyuki Obata | 1999-11-09 |
| 5665497 | Image recording method | Hiroyuki Obata | 1997-09-09 |
| 5298947 | Process for recording images on an electrostatic information recording medium with delayed disconnection of charge accumulation voltage | Takashi Aono, Minoru Utsumi, Hiroyuki Obata, Masayuki Iijima | 1994-03-29 |
| 5192634 | A-selenium-tellurium photosensitive member and electrostatic information recording method | Minoru Utsumi | 1993-03-09 |