Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4260672 | Electrophotographic sensitive element having a photoconductive disazo pigment | Masaomi Sasaki, Kiyoshi Sakai, Mitsuru Hashimoto, Kyoji Tsutsui | 1981-04-07 |
| 4251614 | Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials | Masaomi Sasaki, Kiyoshi Sakai, Mitsuru Hashimoto, Kyoji Tsutsui | 1981-02-17 |
| 4251613 | Disazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials | Masaomi Sasaki, Kiyoshi Sakai, Mitsuru Hashimoto, Kyoji Tsutsui | 1981-02-17 |
| 4247614 | Electrophotographic element containing a disazo pigment | Kiyoshi Sakai, Mitsuru Hashimoto, Masaomi Sasaki, Tomiko Kawakami | 1981-01-27 |
| 4245021 | Electrophotographic element having charge transport layer | Takeo Kazami, Kiyoshi Sakai, Mitsuru Hashimoto, Masaomi Sasaki, Kyoji Tsutsui | 1981-01-13 |
| 4242260 | 2-Hydroxy-3-carbonylanilinonaphth-1-yl disazo derivatives and 1-phenyl-3-methyl-5-hydroxypyrazol-4-yl disazo derivatives of 1,4-bis(4-aminostyryl) benzene | Masaomi Sasaki, Kiyoshi Sakai, Mitsuru Hashimoto, Akio Kozima | 1980-12-30 |
| 4209327 | Electrophotographic sensitive element with benzylamino carbazole charge transfer material | Kiyoshi Sakai | 1980-06-24 |