Issued Patents All Time
Showing 126–150 of 163 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859556 | Electrophotographic photoconductor containing stilbene compound | — | 1989-08-22 |
| 4830943 | Bisazo compounds and electrophotographic photoconductors comprising the bisazo compounds | Tomoyuki Shimada | 1989-05-16 |
| 4777296 | Styryl derivatives and electrophotographic photoconductor comprising one styryl derivative | — | 1988-10-11 |
| 4709096 | Stilbene derivatives, distyryl derivatives and electrophotographic photoconductor comprising at least one of the derivatives | — | 1987-11-24 |
| 4672149 | Photoelectric transducer element | Masao Yoshikawa, Akio Kojima, Tetsuro Suzuki | 1987-06-09 |
| 4620875 | Aqueous ink composition | Masaru Shimada | 1986-11-04 |
| 4606988 | Styryl derivatives and electrophotographic photoconductor comprising one styryl derivative | — | 1986-08-19 |
| 4603097 | Styrene derivatives and electrophotographic photoconductor comprising one of the styrene derivatives | Masayuki Shoshi | 1986-07-29 |
| 4596754 | Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate | Kyoji Tsutsui, Mitsuru Hashimoto, Masafumi Ohta | 1986-06-24 |
| 4572884 | Stilbene derivatives and electrophotographic photoconductor comprising one stilbene derivative | — | 1986-02-25 |
| 4567124 | Electrophotographic element with trisazo photoconductor and an amine substituted charge transfer material | Masafumi Ohta, Masayuki Shoshi | 1986-01-28 |
| 4515883 | Stilbene derivatives, distyryl derivatives and electrophotographic photoconductor comprising at least one of the derivatives | — | 1985-05-07 |
| 4500355 | Aqueous ink composition | Masaru Shimada | 1985-02-19 |
| 4486519 | Bisazo compounds and electrophotographic photoconductors comprising the bisazo compounds | — | 1984-12-04 |
| 4454212 | Electrophotographic photoconductor | Kiyoshi Sakai, Mitsuru Hashimoto, Masafumi Ohta | 1984-06-12 |
| 4439506 | Multilayer electrophotographic element containing a trisazo charge carrier generating substance and an anthracene or divinyl benzene charge carrier transfer substance | Masafumi Ohta | 1984-03-27 |
| 4426327 | 3,6-Disazo-9-ethyl carbazole compounds | Mitsuru Hashimoto, Masafumi Ohta, Akio Kozima, Kiyoshi Sakai | 1984-01-17 |
| 4390608 | Layered charge generator/transport electrophotographic photoconductor uses bisazo pigment | Mitsuru Hashimoto, Toshio Fukagai, Tatsuya Katoh, by Mankichi Katoh, legal representative | 1983-06-28 |
| 4365014 | Electrophotographic photoconductor | Kiyoshi Sakai, Mitsuru Hashimoto, Masafumi Ohta | 1982-12-21 |
| 4363859 | Electrophotographic photoconductor | Kyoji Tsutsui | 1982-12-14 |
| 4349616 | Disazo pigment containing electrophotographic element | — | 1982-09-14 |
| 4327020 | Bis-azo compounds | Masafumi Ohta, Kyoji Tsutsui | 1982-04-27 |
| 4325871 | Ortho-Bis (2-substituted azostyryl) benzene compounds | Mitsuru Hashimoto, Tomiko Kawakami | 1982-04-20 |
| 4314015 | Electrophotographic sensitive materials containing disazo compounds | Mitsuru Hashimoto, Kiyoshi Sakai, Masafumi Ohta, Akio Kozima, Kyoji Tsutsui | 1982-02-02 |
| 4299896 | Electrophotographic sensitive materials containing a disazo pigment | Mitsuru Hashimoto, Kiyoshi Sakai, Masafumi Ohta, Akio Kozima, Kyoji Tsutsui | 1981-11-10 |