| Patent | Date |
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Signal distribution circuit and stuffing control unit
Grant 8,767,748 - Ohta , et al. July 1, 2 | 2014-07-01 |
Gallium phthalocyanine compound, gallium phthalocyanine composite pigment, method for preparing gallium phthalocyanine composite pigment, and electrophotographic photoconductor
Grant 8,557,489 - Sakaguchi , et al. October 15, 2 | 2013-10-15 |
Azo compound and method of preparing the azo compound
Grant 8,541,557 - Ohta September 24, 2 | 2013-09-24 |
Hydroxygallium phthalocyanine composite pigment, electrophotographic photoconductor containing the same, and image forming device and process cartridge for image forming device using the same
Grant 8,530,124 - Sakaguchi , et al. September 10, 2 | 2013-09-10 |
Gallium phthalocyanine compound, and image bearing member, image forming method, image forming apparatus, and process cartridge using the gallium phthalocyanine compound
Grant 8,383,304 - Yanagawa , et al. February 26, 2 | 2013-02-26 |
Image forming apparatus and process cartridge
Grant 8,380,109 - Kurimoto , et al. February 19, 2 | 2013-02-19 |
Azo Compound And Method Of Preparing The Azo Compound
App 20120253025 - OHTA; Masafumi | 2012-10-04 |
Naphthalenetetracarboxylic acid diimide derivative and electrophotographic photoconductor having the same
Grant 8,232,031 - Ohta , et al. July 31, 2 | 2012-07-31 |
Azo compound and method of preparing the azo compound
Grant 8,232,376 - Ohta July 31, 2 | 2012-07-31 |
Method of preparing complex-AZO pigment and complex-AZO pigment thereof
Grant 8,207,312 - Ohta , et al. June 26, 2 | 2012-06-26 |
Electrophotographic photoreceptor, and image forming apparatus and process cartridge therefor using the photoreceptor
Grant 8,206,880 - Tada , et al. June 26, 2 | 2012-06-26 |
Signal Distribution Circuit And Stuffing Control Unit
App 20120134367 - OHTA; Masafumi ; et al. | 2012-05-31 |
Gallium Phthalocyanine Compound, And Image Bearing Member, Image Forming Method, Image Forming Apparatus, And Process Cartridge Using The Gallium Phthalocyanine Compound
App 20110207043 - YANAGAWA; Yoshiki ; et al. | 2011-08-25 |
Gallium Phthalocyanine Compound, Gallium Phthalocyanine Composite Pigment, Method For Preparing Gallium Phthalocyanine Composite Pigment, And Electrophotographic Photoconductor
App 20110159420 - Sakaguchi; Hiromi ; et al. | 2011-06-30 |
Hydroxygallium Phthalocyanine Composite Pigment, Electrophotographic Photoconductor Containing The Same, And Image Forming Device And Process Cartridge For Image Forming Device Using The Same
App 20110159418 - SAKAGUCHI; Hiromi ; et al. | 2011-06-30 |
Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the electrophotographic photoreceptor
Grant 7,858,278 - Ikuno , et al. December 28, 2 | 2010-12-28 |
Electrophotographic Photoreceptor, And Image Forming Apparatus And Process Cartridge Therefor Using The Photoreceptor
App 20100310975 - Tada; Hiromi ; et al. | 2010-12-09 |
Method Of Preparing Complex-azo Pigment And Complex-azo Pigment Thereof
App 20100010204 - OHTA; Masafumi ; et al. | 2010-01-14 |
Image forming apparatus and process cartridge
App 20090180804 - Kurimoto; Eiji ; et al. | 2009-07-16 |
Naphthalenetetracarboxylic Acid Diimide Derivative And Electrophotographic Photoconductor Having The Same
App 20090068577 - OHTA; Masafumi ; et al. | 2009-03-12 |
Azo Compound And Method Of Preparing The Azo Compound
App 20090005546 - Ohta; Masafumi | 2009-01-01 |
Electrophotographic Photoreceptor, And Image Forming Apparatus And Process Cartridge Using The Electrophotographic Photoreceptor
App 20070269729 - Ikuno; Hiroshi ; et al. | 2007-11-22 |
Electrophotographic photoconductor and aromatic polycarbonate resin for use therein
Grant 6,027,846 - Shimada , et al. February 22, 2 | 2000-02-22 |
Electrophotographic photoconductor, aromatic polycarbonate resin for use in the same, and method of producing the aromatic polycarbonate resin
Grant 5,830,980 - Anzai , et al. November 3, 1 | 1998-11-03 |
Electrophotographic photoconductor and aromatic polycarbonate resin for use in the same
Grant 5,747,204 - Anzai , et al. May 5, 1 | 1998-05-05 |
Electroluminescent device comprising oxadiazole compounds luminescent material, oxadiazole compounds for the device, and method of producing oxadiazole compounds
Grant 5,610,309 - Ohta , et al. March 11, 1 | 1997-03-11 |
Electrophotographic photoconductor and triphenylamine compound for use therein
Grant 5,604,065 - Shimada , et al. February 18, 1 | 1997-02-18 |
Method of producing oxadiazole compounds
Grant 5,597,925 - Ohta , et al. January 28, 1 | 1997-01-28 |
Positively-chargeable single-layered type electrophotographic photoconductor
Grant 5,492,784 - Yoshikawa , et al. February 20, 1 | 1996-02-20 |
Electrophotographic photoconductor and diamine compounds for use in the same
Grant 5,489,495 - Anzai , et al. February 6, 1 | 1996-02-06 |
Electroluminescent device comprising oxadiazole compounds luminescent material, oxadiazole compounds for the device, and method of producing oxadiazole compounds
Grant 5,420,288 - Ohta , et al. May 30, 1 | 1995-05-30 |
Electroluminescent device
Grant 5,153,073 - Ohnuma , et al. October 6, 1 | 1992-10-06 |
Electroluminescent device
Grant 5,118,986 - Ohnuma , et al. June 2, 1 | 1992-06-02 |
Disazo compound, method for preparing the same, and electrophotographic element containing the same for use in electrophotography
Grant 4,582,771 - Ohta April 15, 1 | 1986-04-15 |
Electrophotographic element with trisazo photoconductor and an amine substituted charge transfer material
Grant 4,567,124 - Ohta , et al. January 28, 1 | 1986-01-28 |
Electrophotographic photoconductor comprising a dithiol derivative
Grant 4,529,678 - Ohta July 16, 1 | 1985-07-16 |
Electrophotographic photoconductor
Grant 4,454,212 - Sakai , et al. * June 12, 1 | 1984-06-12 |
Multilayer electrophotographic element containing a trisazo charge carrier generating substance and a hydrazone charge carrier transfer substance
Grant 4,436,800 - Ohta , et al. March 13, 1 | 1984-03-13 |
Electrophotographic photoconductor
Grant 4,365,014 - Sakai , et al. December 21, 1 | 1982-12-21 |
Electrophotographic sensitive materials containing a disazo pigment
Grant 4,299,896 - Hashimoto , et al. November 10, 1 | 1981-11-10 |
Electrophotographic photosensitive material with electron donors and electron acceptors
Grant 4,264,695 - Kozima , et al. April 28, 1 | 1981-04-28 |
Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials
Grant 4,251,614 - Sasaki , et al. February 17, 1 | 1981-02-17 |
Disazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials
Grant 4,251,613 - Sasaki , et al. February 17, 1 | 1981-02-17 |
Electrophotographic element having charge transport layer
Grant 4,245,021 - Kazami , et al. January 13, 1 | 1981-01-13 |
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