Issued Patents All Time
Showing 101–112 of 112 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4293628 | Electrophotographic elements containing disazo compounds | Mitsuru Hashimoto, Masafumi Ohta, Akio Kozima, Masaomi Sasaki | 1981-10-06 |
| 4293492 | Disazo compounds derived from 3,6-bis(styryl)-9-ethylcarbazole | Masaomi Sasaki, Mitsuru Hashimoto, Masafumi Ohta, Kyoji Tsutsui | 1981-10-06 |
| 4279981 | Electrophotographic elements containing trisazo compounds | Masafumi Ohta, Mitsuru Hashimoto, Akio Kozima, Masaomi Sasaki | 1981-07-21 |
| 4272598 | Electrophotographic material containing disazo compounds | Masaomi Sasaki, Mitsuru Hashimoto, Masafumi Ohta, Akio Kozima | 1981-06-09 |
| 4260672 | Electrophotographic sensitive element having a photoconductive disazo pigment | Masaomi Sasaki, Mitsuru Hashimoto, Masafumi Ohta, 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, Mitsuru Hashimoto, Masafumi Ohta, 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, Mitsuru Hashimoto, Masafumi Ohta, Kyoji Tsutsui | 1981-02-17 |
| 4247614 | Electrophotographic element containing a disazo pigment | Masafumi Ohta, Mitsuru Hashimoto, Masaomi Sasaki, Tomiko Kawakami | 1981-01-27 |
| 4245021 | Electrophotographic element having charge transport layer | Takeo Kazami, Mitsuru Hashimoto, Masaomi Sasaki, Kyoji Tsutsui, Masafumi Ohta | 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, Mitsuru Hashimoto, Masafumi Ohta, Akio Kozima | 1980-12-30 |
| 4209327 | Electrophotographic sensitive element with benzylamino carbazole charge transfer material | Masafumi Ohta | 1980-06-24 |
| 4191568 | Photosensitive material for electrophotography with dye containing overlayer | Hideaki Ema, Satoshi Otomura, Chikara Imai | 1980-03-04 |