Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990634 | Novel tetracyanoanthraquinodimethane derivatives and process for producing same | Toshio Mukai, Yoshiro Yamashita, Takanori Suzuki, Katsuhiro Sato, Naoya Yabuuchi +2 more | 1991-02-05 |
| 4935469 | Process for producing monodispersed vinyl polymer fine particles | Naoya Yabuuchi, Tatsuro Ohki | 1990-06-19 |
| 4933245 | Electrophotographic photoreceptor | Katsuhiro Sato, Naoya Yabuuchi, Kiroyuki Tanaka, Katsumi Nukada | 1990-06-12 |
| 4912184 | Process for producing monodisperse vinyl polymer fine particles | Naoya Yabuuchi, Tatsuro Ohki | 1990-03-27 |
| 4889924 | Bisazo compounds | Akihiko Tokita, Kaoru Torikoshi, Akira Imai, Touru Ishii | 1989-12-26 |
| 4846893 | Process for producing a surface treated pigment | Naoya Yabuuchi, Tatsuro Ohki | 1989-07-11 |
| 4833054 | Electrophotographic photoreceptor having a bisazo compound | Katsuhiro Sato, Akihiko Tokita;, Hidemi Suto | 1989-05-23 |
| 4833263 | Novel electron-accepting compound and method for preparing the same | Katsuhiro Sato, Hiroyuki Tanaka, Katsumi Nukada, Hidemi Sudo | 1989-05-23 |
| 4822704 | Electrophotographic photoreceptor having a bisazo compound | Akihiko Tokita, Kaoru Torikoshi, Akira Imai, Touru Ishii | 1989-04-18 |
| 4820600 | Electrophotographic photoreceptor having a bisazo compound | Akihiko Tokita, Kaoru Torikoshi, Akira Imai, Touru Ishii | 1989-04-11 |