Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866158 | Polyester resin for toner and process for its production | Ryo Funato, Noriyuki Tajiri, Hirokazu Ito, Hitoshi Iwasaki | 1989-09-12 |
| 4849495 | Polyester resin from tri- or higher polycarboxylic acid for toner and process for its production | Ryo Funato, Noriyuki Tajiri, Hirokazu Ito, Hitoshi Iwasaki | 1989-07-18 |
| 4841057 | Cyclic imido anthraquinone compounds | Konoe Miura, Tetsuo Ozawa, Seigo Okumura | 1989-06-20 |