Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871639 | Carrier for electrophotographic developer | Takayoshi Aoki, Masayuki Takeda, Toshio Honjo, Kazuhiro Itoh, Kenji Uchida | 1989-10-03 |
| 4868083 | Developer carrier and process for producing the same | Yasuo Matsumura, Masayuki Takeda, Chiaki Suzuki, Takayoshi Aoki | 1989-09-19 |
| 4861694 | Process for producing carriers for developer | Takayoshi Aoki, Masayuki Takeda, Toshio Honjo, Kazuhiro Itoh, Kenji Uchida | 1989-08-29 |
| 4859558 | Composition with fatty acid bisamide powder developer | Yasuo Matsumura, Takayoshi Aoki, Masayuki Takeda, Chiaki Suzuki | 1989-08-22 |