Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871639 | Carrier for electrophotographic developer | Takayoshi Aoki, Ikutaroh Nagatsuka, Masayuki Takeda, Kazuhiro Itoh, Kenji Uchida | 1989-10-03 |
| 4861694 | Process for producing carriers for developer | Takayoshi Aoki, Masayuki Takeda, Ikutaroh Nagatsuka, Kazuhiro Itoh, Kenji Uchida | 1989-08-29 |