Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885222 | Method for developing electrostatic latent image in an oscillating electric field | Tadashi Kaneko, Yoko Yamamoto | 1989-12-05 |
| 4877704 | Process for developing latent electrostatic image using toner containing polyester resin | Hiroyuki Takagiwa, Jiro Takahashi, Kunio Akimoto, Masafumi Uchida | 1989-10-31 |