Issued Patents All Time
Showing 26–30 of 30 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, Katsumi Nukada, Akira Imai, Kazuo Yamasaki, Kiyokazu Mashimo +2 more | 1994-04-12 |
| 5298617 | Oxytitaniumphthalocyanine hydrate crystal and electrophotographic photoreceptor using said crystal | Katsumi Nukada, Katsumi Daimon, Yasuo Sakaguchi, Hidemi Nukada, Akihiko Tokida | 1994-03-29 |
| 5292604 | Phthalocyanine crystal of mixed pigments and electrophotographic photoreceptor using the same | Katsumi Nukada, Akira Imai, Katsumi Daimon | 1994-03-08 |
| 5290928 | Process for preparing oxytitanium phthalocyanine hydrate crystal | Katsumi Nukada, Akira Imai, Katsumi Daimon | 1994-03-01 |
| 5283145 | Crystals of dichlorotin phthalocyanine, method of preparing the crystal, and electrophotographic photoreceptor comprising the crystal | Katsumi Nukada, Akira Imai, Yasuo Sakaguchi, Katsumi Daimon, Toru Ishii +1 more | 1994-02-01 |