Issued Patents All Time
Showing 126–147 of 147 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5302479 | Crystals of hydroxygallium phthalocyanine, method of preparing the crystals, photoconductive material comprising the crystals, and electrophotographic photoreceptor comprising the material | Katsumi Daimon, Akira Imai, Masakazu Iijima, Kazuo Yamasaki, Kiyokazu Mashimo +2 more | 1994-04-12 |
| 5302710 | Phthalocyanine mixed crystal and electrophotographic photoreceptor containing the same | Akira Imai, Katsumi Daimon, Masakazu Iijima | 1994-04-12 |
| 5298617 | Oxytitaniumphthalocyanine hydrate crystal and electrophotographic photoreceptor using said crystal | Katsumi Daimon, Masakazu Iijima, Yasuo Sakaguchi, Hidemi Nukada, Akihiko Tokida | 1994-03-29 |
| 5292604 | Phthalocyanine crystal of mixed pigments and electrophotographic photoreceptor using the same | Akira Imai, Katsumi Daimon, Masakazu Iijima | 1994-03-08 |
| 5290928 | Process for preparing oxytitanium phthalocyanine hydrate crystal | Masakazu Iijima, Akira Imai, Katsumi Daimon | 1994-03-01 |
| 5283145 | Crystals of dichlorotin phthalocyanine, method of preparing the crystal, and electrophotographic photoreceptor comprising the crystal | Akira Imai, Yasuo Sakaguchi, Katsumi Daimon, Masakazu Iijima, Toru Ishii +1 more | 1994-02-01 |
| 5153085 | Electrophotographic photosensitive member and image forming process | Yutaka Akasaki, Hidekazu Aonuma, Kazuya Hongo, Katsuhiro Sato, Teruumi Marumo | 1992-10-06 |
| 5139908 | Electrophotographic photoreceptor with bromine or chlorine containing polycarbonate | Yutaka Akasaki, Katsuhiro Sato, Susumu Honma, Hiroyuki Tanaka | 1992-08-18 |
| 5102757 | Electrophotographic photosensitive member and image forming process | Yutaka Akasaki, Hidekazu Aonuma, Kazuya Hongo, Katsuhiro Sato, Teruumi Marumo | 1992-04-07 |
| 5091276 | Electrophotographic reverse image forming process | Yutaka Akasaki, Hidekazu Aonuma, Kazuya Hongo, Katsuhiro Sato, Teruumi Marumo | 1992-02-25 |
| 5085960 | Electrophotographic photosensitive member and image forming process | Yutaka Akasaki, Hidekazu Aonuma, Kazuya Hongo, Katsuhiro Sato, Teruumi Marumo | 1992-02-04 |
| 5075487 | Fluorene derivative | Yutaka Akasaki, Katsuhiro Sato | 1991-12-24 |
| 5028505 | Electrophotographic photoreceptor | Yutaka Akasaki, Katsuhiro Sato | 1991-07-02 |
| 5024911 | Electrophotographic photoreceptor having an electric charge generating layer comprising a pyrylium compound | Yutaka Akasaki, Hidekazu Aonuma, Akihiko Tokita, Hidemi Suto, Katsuhiro Sato +1 more | 1991-06-18 |
| 5023356 | Novel tetracyanoanthraquinodimethane derivatives and process for producing same | Toshio Mukai, Yoshiro Yamashita, Takanori Suzuki, Yutaka Akasaki, Katsuhiro Sato +2 more | 1991-06-11 |
| 5011757 | Electrophotographic photoreceptor containing a fluorene derivative | Yutaka Akasaki, Katsuhiro Sato | 1991-04-30 |
| 5011969 | Fluorene derivative and process for preparation thereof | Yutaka Akasaki, Katsuhiro Sato | 1991-04-30 |
| 5008431 | Benzophenone derivative | Yutaka Akasaki, Katsuhiro Sato | 1991-04-16 |
| 5006435 | Electrophotographic photosensitive member with additive in charge generating layer | Yutaka Akasaki, Hidekazu Aonuma, Kazuya Hongo, Katsuhiro Sato, Teruumi Marumo | 1991-04-09 |
| 4990634 | Novel tetracyanoanthraquinodimethane derivatives and process for producing same | Toshio Mukai, Yoshiro Yamashita, Takanori Suzuki, Yutaka Akasaki, Katsuhiro Sato +2 more | 1991-02-05 |
| 4933245 | Electrophotographic photoreceptor | Yutaka Akasaki, Katsuhiro Sato, Naoya Yabuuchi, Kiroyuki Tanaka | 1990-06-12 |
| 4833263 | Novel electron-accepting compound and method for preparing the same | Yutaka Akasaki, Katsuhiro Sato, Hiroyuki Tanaka, Hidemi Sudo | 1989-05-23 |