Patents by Inventor Masato Tanaka

Masato Tanaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and hydroxygallium phthalocyanine crystal
    Patent number: 9519232
    Abstract: An electrophotographic photosensitive member includes a support and a photosensitive layer on the support, and the photosensitive layer contains a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2?±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuK? X-ray diffraction.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: December 13, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Kawahara, Tsutomu Nishida, Junpei Kuno, Masato Tanaka, Kaname Watariguchi
  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus, and gallium phthalocyanine crystal
    Patent number: 9500965
    Abstract: Provided are an electrophotographic photosensitive member capable of outputting an image having less image defects due to the ghost phenomenon not only under a normal-temperature and normal-humidity environment but also under a low-temperature and low-humidity environment as a particularly severe condition, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. The electrophotographic photosensitive member is an electrophotographic photosensitive member including a photosensitive layer, in which the photosensitive layer includes a gallium phthalocyanine crystal in which a compound represented by the following formula (1) or the following formula (2) is contained.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: November 22, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Masato Tanaka
  • Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
    Patent number: 9500966
    Abstract: An electrophotographic photosensitive member, comprising a support, a charge generating layer on the support and a charge transporting layer on the charge generating layer, wherein the charge generating layer comprises a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound and a compound represented by Formula (1), wherein a nitrogen atom in a heterocyclic ring of the nitrogen-containing heterocyclic compound has a substituent.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: November 22, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kaname Watariguchi, Masato Tanaka
  • Kit for adhering biological hard tissues
    Patent number: 9474826
    Abstract: A kit for bonding to biological hard tissues, containing a phosphorylated polysaccharide, a polyvalent metal salt other than phosphates, and a solvent. The adhesive composition for biological hard tissues provided by the kit for bonding to biological hard tissues is suitably used in for medical uses, such as cement for bones or dental cement.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: October 25, 2016
    Assignees: National University Corporation Okayama University, Junsei Educational Institution
    Inventors: Yasuhiro Yoshida, Masato Tanaka, Kazuomi Suzuki, Toshifumi Ozaki, Tomohiro Takahata, Masao Irie, Mariko Nakamura, Mitsunobu Kawashima, Yamato Nojiri, Koichi Okada, Masahiro Nagao
  • Diffraction element and method of manufacturing diffraction element
    Patent number: 9465149
    Abstract: Provided is an immersion diffraction element that prevents decrease of diffraction efficiency thereof so as to satisfy optical performance. A reflection type diffraction element is made of a material transmitting a light, beam having a predetermined wavelength. An echelle diffraction grating covered with a reflecting film that prevents transmission of the light beam is formed on one surface of the material. A diffraction grating is formed off in a repeated manner, a blazed surface facing incident light and a non-blazed surface connecting the blazed surface to a neighboring blazed surface. An angle formed between the blazed surface and the non-blazed surface is an acute angle. A defect generated at a grating vertex of the blazed surface fails in a shadow of the neighboring blazed surface so as to prevent the incident light from becoming scattered light due to the defect portion.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: October 11, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeru Sugiyama, Masato Tanaka
  • Electrophotographic photosensitive member, manufacturing method of electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and a solid solution and manufacturing method of a solid solution
    Patent number: 9459545
    Abstract: The present invention provides an electrophotographic photosensitive member which can output images with reduced image defects due to ghosting not only under a normal temperature and normal humidity environment but also even under a low temperature and low humidity environment as especially severe conditions, and a manufacturing method thereof; and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member. Accordingly, the electrophotographic photosensitive member of the present invention having a support and a photosensitive layer on the support includes the photosensitive layer which contains a solid solution of hydroxygallium phthalocyanine and a compound represented by the following Formula (1) or Formula (1)?, the solid solution having peaks at Bragg angles 2? of 7.4°±0.3° and 28.3°±0.3° in CuK? characteristic X-ray diffraction.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 4, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanaka, Tsutomu Nishida, Masataka Kawahara
  • Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and gallium phthalocyanine crystal
    Patent number: 9459542
    Abstract: Provided is an electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member that can output an image having less image defects due to a ghost phenomenon not only under a normal-temperature, normal-humidity environment but also under a low-temperature, low-humidity environment as a particularly severe condition. The electrophotographic photosensitive member includes a support and a photosensitive layer formed on the support, in which the photosensitive layer includes a gallium phthalocyanine crystal containing a specific amine compound in itself.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 4, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanaka, Masataka Kawahara, Kaname Watariguchi, Takeshi Murakami, Akira Yoshida
  • Hydroxygallium phthalocyanine crystal, electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    Patent number: 9459544
    Abstract: The present invention provides a novel hydroxygallium phthalocyanine crystal and an electrophotographic photosensitive member capable of outputting an image with few failures due to a ghost phenomenon not only in normal-temperature, normal-humidity environments but also even in low-temperature, low-humidity environments. The hydroxygallium phthalocyanine crystal has peaks at Bragg angles 2?±0.2° of 7.5°, 9.9°, 25.2°, and 28.3° as determined by X-ray diffraction with Cu K? radiation. The intensity of the peak at a Bragg angle 2?±0.2° of 9.9° is higher than the intensity of the peak at a Bragg angle 2?±0.2° of 7.5°.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: October 4, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanaka, Tsutomu Nishida
  • FAILURE FACTOR IDENTIFICATION SUPPORTING APPARATUS AND FAILURE FACTOR IDENTIFICATION SUPPORTING METHOD
    Publication number: 20160274964
    Abstract: A failure factor identification supporting apparatus includes a failure time point information obtaining unit (21) that obtains information regarding a failure occurrence time point at which a failure occurs in a field device (V1) located in a field; an event information obtaining unit (22) that obtains event information regarding, among one or more events that occur in the field, an event that occurs within a certain time range prior to the failure occurrence time point, and an event occurrence time point at which the event occurs; and a failure factor candidate output unit (23) that outputs the event information, obtained by the event information obtaining unit (22), as a failure factor candidate.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 22, 2016
    Applicant: AZBIL CORPORATION
    Inventors: Masato TANAKA, Fumiaki YAMASAKI, Shinichi KOYAMA, Motomi KOHATA
  • Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus and phthalocyanine crystal
    Patent number: 9442399
    Abstract: The photosensitive layer of an electrophotographic photosensitive member contains a phthalocyanine crystal in which a compound represented by the following formula (1) is contained:
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: September 13, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Masato Tanaka
  • Electrophotographic photosensitive member and manufacturing method therefor, process cartridge and electrophotographic apparatus including the electrophotographic photosensitive member, and phthalocyanine crystal and method producing therefor
    Patent number: 9436106
    Abstract: Provided is an electrophotographic photosensitive member, including a photosensitive layer that includes a phthalocyanine crystal in which a compound represented by the following formula (1) is contained: in the formula (1), X represents a vinyl group or a propyl group.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: September 6, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Junpei Kuno, Tsutomu Nishida, Masato Tanaka, Masataka Kawahara, Kaname Watariguchi
  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
    Publication number: 20160252833
    Abstract: An electrophotographic photosensitive member includes a support member, a charge generating layer, and a charge transport layer in that order. The charge generating layer contains a gallium phthalocyanine crystal containing therein at least one amide compound selected from the group consisting of N-methylformamide, N-propylformamide, and N-vinylformamide. The charge transport layer contains fluorine-containing resin particles and a fluorine-containing copolymer.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 1, 2016
    Inventors: Hirofumi Kumoi, Masataka Kawahara, Masato Tanaka
  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
    Publication number: 20160252830
    Abstract: An electrophotographic photosensitive member has a support, a charge generation layer, and a charge transport layer in this order, the charge transport layer containing a charge transport material. The charge transport layer is a surface layer of the electrophotographic photosensitive member and contains a polycarbonate resin having a structural unit selected from group A and a structural unit selected from group B (groups A and B defined in the disclosure).
    Type: Application
    Filed: February 25, 2016
    Publication date: September 1, 2016
    Inventors: Yota Ito, Daisuke Miura, Shoma Hinata, Hiroyuki Tomono, Takashi Anezaki, Tatsuya Yamaai, Kazumichi Sugiyama, Masataka Kawahara, Hirotoshi Uesugi, Akihiro Maruyama, Hirofumi Kumoi, Masato Tanaka
  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
    Publication number: 20160252829
    Abstract: An electrophotographic photosensitive member has a support, a charge generation layer, and a charge transport layer in this order, the charge transport layer containing a charge transport material. The charge transport layer is a surface layer of the electrophotographic photosensitive member and contains a polycarbonate resin having a structural unit selected from group A and a structural unit selected from group B (groups A and B defined in the disclosure).
    Type: Application
    Filed: February 25, 2016
    Publication date: September 1, 2016
    Inventors: Masataka Kawahara, Hirotoshi Uesugi, Akihiro Maruyama, Hirofumi Kumoi, Masato Tanaka, Hiroyuki Tomono, Shoma Hinata, Yota Ito, Daisuke Miura, Takashi Anezaki, Tatsuya Yamaai, Kazumichi Sugiyama
  • ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
    Publication number: 20160252834
    Abstract: An electrophotographic photoconductor comprises a support, an undercoat layer, a charge generation layer, and a hole transport layer in this order. The undercoat layer comprises an electron transport substance, and the charge generation layer comprises a gallium phthalocyanine crystal and an amide compound represented by formula (N1): where R1 represents a methyl group, a propyl group, or a vinyl group.
    Type: Application
    Filed: February 25, 2016
    Publication date: September 1, 2016
    Inventors: Kaname Watariguchi, Masato Tanaka, Masataka Kawahara, Jumpei Kuno
  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS, AND MIXED CRYSTAL OF HYDROXYGALLIUM PHTHALOCYANINE AND CHLOROGALLIUM PHTHALOCYANINE AND METHOD OF PRODUCING THE CRYSTALLINE COMPLEX
    Publication number: 20160252832
    Abstract: Provided is an electrophotographic photosensitive member including a support and a photosensitive layer. The photosensitive layer contains crystalline complexes of hydroxygallium phthalocyanine and chlorogallium phthalocyanine, the crystalline complexes containing an amide compound represented by Formula (1): R1—NHCHO, where R1 represents a methyl group, a propyl group, or a vinyl group.
    Type: Application
    Filed: February 25, 2016
    Publication date: September 1, 2016
    Inventors: Masato Tanaka, Tsutomu Nishida, Hirofumi Kumoi
  • Motor drive control device
    Patent number: 9428172
    Abstract: An appropriate motor control in accordance with a pedal operation of a driver is to be achieved. A motor drive control device according to the present invention is a motor drive control device for an electric power-assisted vehicle that has one-way clutches respectively provided for a motor drive system and for a pedal drive system. The motor drive control device according to the present invention includes: a first calculating part that calculates a pedal rotation conversion speed that is converted from a pedal rotation; and a second calculating part that calculates a second target torque for a motor based on the pedal rotation conversion speed, during a period in which a first target torque derived from a pedal torque is not detected.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: August 30, 2016
    Assignees: MICROSPACE CORPORATION, TAIYO YUDEN CO., LTD.
    Inventors: Masato Tanaka, Kazuo Asanuma, Yasuo Hosaka, Kuniaki Kawagoe
  • Multi-core cable
    Patent number: 9431726
    Abstract: A multi-core cable 1 includes plural shielded electric wires 10 for signal transmission. The plural shielded electric wires 10 are bundled so as to make contact with the adjacent shielded electric wires 10, and sheaths 14 of the plural shielded electric wires 10 are respectively removed at the same position in the length direction, and outer conductors 13 of the plural shielded electric wires 10 at the position at which the sheaths 14 are removed are bundled by a metal wire 30 and the bundled portion is soldered and fastened.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: August 30, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masato Tanaka, Takuya Ishikawa, Yoshimasa Watanabe
  • Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    Patent number: 9423706
    Abstract: An electrophotographic photosensitive member includes a support and a photosensitive layer formed on the support. A surface layer of the electrophotographic photosensitive member contains a polymerized product of a composition that contains a charge transporting compound having a particular group (polymerizable functional group).
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: August 23, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaki Nonaka, Hideaki Nagasaka, Masato Tanaka
  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS, AND GALLIUM PHTHALOCYANINE CRYSTAL
    Publication number: 20160238956
    Abstract: Provided are an electrophotographic photosensitive member capable of outputting an image having less image defects due to the ghost phenomenon not only under a normal-temperature and normal-humidity environment but also under a low-temperature and low-humidity environment as a particularly severe condition, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. The electrophotographic photosensitive member is an electrophotographic photosensitive member including a photosensitive layer, in which the photosensitive layer includes a gallium phthalocyanine crystal in which a compound represented by the following formula (1) or the following formula (2) is contained.
    Type: Application
    Filed: December 3, 2013
    Publication date: August 18, 2016
    Inventor: Masato Tanaka