Patents by Inventor Wataru Yamada

Wataru Yamada 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).

  • Publication number: 20210161417
    Abstract: An electrode includes a living body contact portion that is to be in contact with a living body and that contains a rubber material and at least one carbon material selected from carbon nanotubes and graphene. The ratio of the volume resistivity of the living body contact portion to the surface resistivity of the living body contact portion is 1.2 or more. The amount of the carbon material in the living body contact portion is 3 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the rubber material, or the living body contact portion has a 25% compression hardness of 20 kPa or more and 110 kPa or less.
    Type: Application
    Filed: May 7, 2020
    Publication date: June 3, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Wataru YAMADA
  • Patent number: 11016404
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-based graft polymer and a fluorine-containing resin particle. The fluorine-based graft polymer includes at least a first structural unit that does not have an acidic group with a pKa of 3 or less but has a fluorine atom, a second structural unit derived from a macromonomer, and a third structural unit having the acidic group with a pKa of 3 or less.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: May 25, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tomoya Sasaki, Masahiro Iwasaki, Ryosuke Fujii, Wataru Yamada, Takahiro Ishizuka
  • Patent number: 11015250
    Abstract: An impeller for a rotary machine includes a base material of the impeller made of Al or an Al alloy. A surface layer for the impeller is formed by an electroless plating layer with a Ni—P based alloy and an under layer disposed between the base material and the surface layer, the under layer having a smaller Vickers hardness than the surface layer.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: May 25, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Daigo Watanabe, Takashi Arai, Hideki Yamaguchi, Wataru Murono, Taiji Torigoe, Masahiro Yamada
  • Publication number: 20210146096
    Abstract: A movable catheter is provided with a tube having a main lumen. The tube has a plurality of wire lumens and is provided with a wire. A substantial half on one end portion side thereof is inserted through the wire lumen, an intermediate part thereof is folded back in the distal end portion of the tube, and a substantial half on the other end portion side thereof is inserted through the wire lumen. The one end portion and the other end portion thereof are disposed on the proximal end side of the tube. Various embodiments enable the number of components to be reduced, and to reduce the number of manufacturing steps.
    Type: Application
    Filed: April 9, 2019
    Publication date: May 20, 2021
    Inventors: Atsushi YAMADA, Tohru TANI, Wataru YONEMICHI
  • Patent number: 10998652
    Abstract: A shield terminal (10) includes an inner conductor terminal (11), an outer conductor terminal (13), a dielectric (12) and a capacitor serving as an electronic element (16). The outer conductor terminal (13) surrounds the inner conductor terminal (11) and is connected to a shield portion (93) of a shielded cable (90). The dielectric (12) is arranged between the inner conductor terminal (11) and the outer conductor terminal (13). The electronic element (16) includes a core connecting portion (43) to be connected to a core (91) of the shielded cable (90) and an inner conductor connecting portion (42) to be connected to the inner conductor terminal (11). In the shield terminal (10), an insulating short circuit preventing member (14) is arranged between the core connecting portion (43) and the outer conductor terminal (13).
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: May 4, 2021
    Inventors: Shohei Mitsui, Liping Kang, Norihito Hashimoto, Motoki Kubota, Ai Hirano, Masanobu Kasuga, Keisuke Kanemura, Wataru Yamanaka, Ryo Yamada
  • Publication number: 20210088918
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-containing resin particle and a fluorine-based graft polymer having a fluorinated alkyl group. A ratio of an amount of a fluorine-based graft polymer separated from the fluorine-containing resin particle to a total amount of the fluorine-based graft polymer in the outermost surface layer is 15% or less.
    Type: Application
    Filed: January 16, 2020
    Publication date: March 25, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Keisuke KUSANO, Wataru YAMADA, Masahiro IWASAKI, Ryosuke FUJII, Yuto OKAZAKI, Taisuke FUKUI
  • Publication number: 20210080843
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-based graft polymer and a fluorine-containing resin particle. The fluorine-based graft polymer includes at least a first structural unit that does not have an acidic group with a pKa of 3 or less but has a fluorine atom, a second structural unit derived from a macromonomer, and a third structural unit having the acidic group with a pKa of 3 or less.
    Type: Application
    Filed: January 20, 2020
    Publication date: March 18, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoya SASAKI, Masahiro IWASAKI, Ryosuke FUJII, Wataru YAMADA, Takahiro ISHIZUKA
  • Publication number: 20210070943
    Abstract: A conductive member contains silicone rubber and a conductive agent. The total content of cyclic dimethylpolysiloxane having 3 to 24 silicon atoms in the conductive member is 5000 ppm or less.
    Type: Application
    Filed: January 12, 2020
    Publication date: March 11, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shogo TOMARI, Wataru YAMADA, Monta IDO, Tadashi SUTO
  • Patent number: 10890854
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2): (in Formulas (1) and (2), R10, R11, R20 or R21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X1 and X2 each independ
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: January 12, 2021
    Assignee: FUJI XEROX CO.. LTD.
    Inventors: Masahiro Iwasaki, Ryosuke Fujii, Kenji Kajiwara, Wataru Yamada
  • Patent number: 10870715
    Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: December 22, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kou Tsurugi, Shiori Hanada, Atsushi Shibahara, Kazumori Kawamura, Fumiaki Nishino, Yasuyuki Harada, Wataru Yamada, Akiko Matsumoto, Isao Hara, Tatsuya Nakamura, Toshihiro Muroto
  • Publication number: 20200341392
    Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoating layer, and a photosensitive layer. The undercoating layer that is provided on the conductive substrate and includes a binder resin and a charge transporting material. The binder resin includes a resin obtained by polymerizing a diallyl phthalate compound. The photosensitive layer that is provided on the undercoating layer.
    Type: Application
    Filed: July 12, 2020
    Publication date: October 29, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro IWASAKI, Wataru YAMADA, Kenji KAJIWARA, Kota MAKI
  • Publication number: 20200341393
    Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoating layer that is disposed on the conductive substrate, and a photosensitive layer that is disposed on the undercoating layer, in which the undercoating layer contains at least one perinone compound selected from the group consisting of the compounds represented by Formulas (1) and (2), and at least one acceptor compound selected from the group consisting of compounds represented by Formula (3) to (15) which are shown in the specification.
    Type: Application
    Filed: July 12, 2020
    Publication date: October 29, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro IWASAKI, Wataru YAMADA, Kenji KAJIWARA, Kota MAKI
  • Publication number: 20200310302
    Abstract: An image forming apparatus includes a photoreceptor photoreceptor having an outermost surface layer that contains polytetrafluoroethylene particles and a dispersant containing fluorine atoms and has a perfluorooctanoic acid content of 25 ppb or less relative to the polytetrafluoroethylene particles; and a transfer device that includes an intermediate transfer body having a surface onto which a toner image is transferred, a first transfer device that performs first transfer that involves transferring the toner image on the surface of the photoreceptor onto the surface of the intermediate transfer body, and a second transfer device that performs second transfer that involves transferring the toner image on the surface of the intermediate transfer body onto a surface of a recording medium, the second transfer device having a second transfer member having a surface with a hexadecane contact angle of 30 degrees or more.
    Type: Application
    Filed: August 5, 2019
    Publication date: October 1, 2020
    Applicant: FUJI XEROX Co., Ltd.
    Inventors: Tomoko SUZUKI, Wataru YAMADA
  • Patent number: 10789705
    Abstract: A quality monitoring system according to an embodiment includes an imager, an inspector, and a processor. The imager repeatedly acquires a first image of an equipment. The equipment repeats a first operation processing a workpiece. The first image is of the equipment imaged at a first timing of the first operation. The inspector inspects a quality of the workpiece after processing. The processor decides, based on a plurality of the first images, an evaluation of the equipment imaged in each of the first images. The processor analyzes a correlation between a plurality of the evaluations and a plurality of the qualities.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: September 29, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Risa Sakai, Wataru Yamada
  • Patent number: 10754266
    Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoating layer that is disposed on the conductive substrate, and a photosensitive layer that is disposed on the undercoating layer, in which the undercoating layer contains at least one perinone compound selected from the group consisting of a compound represented by Formula (1) and a compound represented by Formula (2) which are shown below, and polyurethane, contains at least one perinone compound selected from the group consisting of the compounds represented by Formulas (1) and (2), and at least one acceptor compound selected from the group consisting of compounds represented by Formula (3) to (15) which are shown in the specification, or contains a resin obtained by polymerizing a diallyl phthalate compound and a charge transporting material.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: August 25, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Iwasaki, Wataru Yamada, Kenji Kajiwara, Kota Maki
  • Publication number: 20200257212
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains fluorine-containing resin particles and a fluorine-containing graft polymer having a fluorinated alkyl group. In an infrared absorption spectrum of the fluorine-containing graft polymer, a ratio of a peak area in a wavenumber range of from 1,020 cm?1 to 1,308 cm?1 to a peak area in a wavenumber range of from 1,673 cm?1 to 1,779 cm?1 is 2.7 or more and 4.8 or less.
    Type: Application
    Filed: July 17, 2019
    Publication date: August 13, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro IWASAKI, Wataru Yamada, Ryosuke Fujii, Keisuke Kusano, Taisuke Fukui, Yuto Okazaki
  • Publication number: 20200257210
    Abstract: A fluorine-containing resin particle contains 0 or more and 30 or less carboxyl groups per 106 carbon atoms and 0 ppm or more and 3 ppm or less of a basic compound.
    Type: Application
    Filed: December 2, 2019
    Publication date: August 13, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Wataru YAMADA, Masahiro Iwasaki, Ryosuke Fujii, Keisuke Kusano, Yuto Okazaki, Taisuke Fukui
  • Patent number: 10712679
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; an undercoat layer on the conductive substrate, the undercoat layer containing at least one perinone compound selected from the group consisting of a compound represented by general formula (1) and a compound represented by general formula (2) below, metal oxide particles of at least one type selected from the group consisting of aluminum oxide particles, iron oxide particles, copper oxide particles, magnesium oxide particles, calcium oxide particles, and silicon dioxide particles, and a binder resin, the undercoat layer having a thickness of 1 ?m or more and 10 ?m or less; and a photosensitive layer on the undercoat layer.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: July 14, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kenji Kajiwara, Wataru Yamada, Masahiro Iwasaki, Kota Maki
  • Patent number: 10705441
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: July 7, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Ryosuke Fujii, Wataru Yamada, Masahiro Iwasaki, Keisuke Kusano, Taisuke Fukui, Yuto Okazaki
  • Patent number: 10642173
    Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer on the conductive substrate, and a photosensitive layer on the undercoat layer. The undercoat layer contains at least one perinone compound selected from the group consisting of a compound represented by general formula (1) below and a compound represented by general formula (2) below, an amine compound (A) having an ionization potential of 5.4 eV or more and 5.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: May 5, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Iwasaki, Kota Maki, Kenji Kajiwara, Wataru Yamada