Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8669032 | Electrostatic-image-developing toner, production method thereof, electrostatic image developer, and image forming apparatus | Takeshi Iwanaga, Takahisa Fujii | 2014-03-11 |
| 7514194 | Toner for developing electrostatic latent image and production method thereof, electrostatic latent image developer, image forming method, and image forming apparatus | Takao Ishiyama, Masaaki Suwabe, Yasuo Kadokura, Michio Take, Hiroshi Nakazawa | 2009-04-07 |
| 7399567 | Toner for electrostatic latent image development, electrostatic latent image developer containing the toner, and image formation method using the developer | Yasuo Kadokura, Tomohito Nakajima, Satoshi Yoshida, Michio Take, Takao Ishiyama | 2008-07-15 |
| 7291434 | Toner for electrostatically charged image development, manufacturing method thereof, image forming method, and image forming apparatus using the image forming method | Takao Ishiyama, Tomohito Nakajima, Satoshi Yoshida, Eisuke Iwazaki | 2007-11-06 |
| 6887638 | Toner for developing electrostatic latent image, process for producing the same, process for forming image, apparatus for forming image and toner cartridge | Takao Ishiyama, Shuji Sato, Hiroshi Kamada | 2005-05-03 |
| 6395440 | Electrophotographic photoreceptor, process cartridge and electrophotographic apparatus using the same | Yasuhiro Yamaguchi, Fumiaki Tambo, Masahiro Iwasaki, Taketoshi Hoshizaki, Yasuo Sakaguchi | 2002-05-28 |
| 6020426 | Charge-transporting copolymer, method of forming charge-transporting copolymer, electrophotographic photosensitive body, and electrophotographic device | Yasuhiro Yamaguchi, Fumiaki Tambo, Taketoshi Hoshizaki, Yasuo Sakaguchi, Ryosaku Igarashi +1 more | 2000-02-01 |
| 5965063 | Charge transporting material and method of preparing charge transporting particulates used therein | Takeshi Agata, Wataru Yamada, Katsumi Nukada, Yasuhiro Yamaguchi, Taketoshi Hoshizaki | 1999-10-12 |
| 5759726 | Electrographic photosensitive member | Fumiaki Tambo, Katsumi Daimon, Kazuo Yamasaki, Ryosaku Igarashi, Yasuhiro Yamaguchi | 1998-06-02 |
| 5556967 | Process for producing hydroxygallium phthalocyanine | Katsumi Nukada, Katsumi Daimon, Yasuo Sakaguchi | 1996-09-17 |
| 5510217 | Gallium phthalocyanine halide crystals, method for preparing the same and electrophotographic photoreceptor using the same | Kazuya Hongo, Katsumi Nukada, Noriyoshi Takahashi, Masaaki Suwabe, Hitoshi Takimoto | 1996-04-23 |
| 5495011 | Process for preparing hydroxygallium phthalocyanine crystal, product thereof and electrophotographic photoreceptor using the same | Katsumi Nukada, Katsumi Daimon, Yasuo Sakaguchi | 1996-02-27 |
| 5463044 | Process for preparing chlorogallium phthalocyanine crystal | Katsumi Nukada, Akira Imai | 1995-10-31 |
| 5463043 | Process for producing a dichlorotin phthalocyanine crystal | Katsumi Nukada, Akira Imai, Katsumi Daimon, Kiyokazu Mashimo, Yasuo Sakaguchi +1 more | 1995-10-31 |
| 5459004 | Process for preparing hydroxygallium phthalocyanine crystals and electrophotographic photoreceptor using the crystals | Katsumi Daimon, Katsumi Nukada, Akira Imai, Toru Ishii | 1995-10-17 |
| 5416207 | Dichlorotin phthalocyanine crystal, process for producing the same, and electrophotographic photoreceptor using the same | Akira Imai, Katsumi Nukada, Satsumi Daimon, Toru Ishii, Yasuo Sakaguchi +1 more | 1995-05-16 |
| 5393629 | Electrophotographic photoreceptor | Katsumi Nukada, Katsumi Daimon, Yasuo Sakaguchi, Kazuo Yamasaki, Michiaki Takahashi +7 more | 1995-02-28 |
| 5378569 | Oxytitaniumphthalocyanine hydrate crystal and electrophotographic photoreceptor using said crystal | Katsumi Nukada, Katsumi Daimon, Yasuo Sakaguchi, Hidemi Nukada, Akihiko Tokida | 1995-01-03 |
| 5362589 | Electrophotographic photoreceptor containing phthalocyanine mixed crystals | Katsumi Nukada, Akira Imai, Katsumi Daimon | 1994-11-08 |
| 5358813 | Crystals of chlorogallium phthalocyanine and method of preparing them | Katsumi Nukada, Katsumi Daimon, Akira Imai, Toru Ishii, Yasuo Sakaguchi +2 more | 1994-10-25 |
| 5338636 | Dichlorotin phthalocyanine crystal electrophotographic photoreceptor using the same, and coating composition for electrophotographic photoreceptor | Katsumi Nukada, Akira Imai, Katsumi Daimon, Kiyokazu Mashimo, Yasuo Sakaguchi +1 more | 1994-08-16 |
| 5336578 | Phthalocyanine mixed crystal and electrophotographic photoreceptor containing the same | Katsumi Nukada, Akira Imai, Katsumi Damion | 1994-08-09 |
| 5308728 | Dichlorotin phthalocyanine crystal, process for producing the same, and electrophotographic photoreceptor using the same | Akira Imai, Katsumi Nukada, Katsumi Daimon, Toru Ishii, Yasuo Sakaguchi +1 more | 1994-05-03 |
| 5304446 | Hydroxyindium phthalocyanine crystals and electrophotographic photoreceptor | Katsumi Daimon, Katsumi Nukada, Akira Imai, Toru Ishii | 1994-04-19 |
| 5302710 | Phthalocyanine mixed crystal and electrophotographic photoreceptor containing the same | Katsumi Nukada, Akira Imai, Katsumi Daimon | 1994-04-12 |