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).

  • Patent number: 11307508
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer on the conductive substrate. The electrophotographic photoreceptor has an outermost surface layer that contains fluorine-containing resin particles and an antioxidant. The fluorine-containing resin particles contain 0 or more and 30 or less carboxy groups per 106 carbon atoms. A decrease in weight of the antioxidant when heated at 150° C. for 10 minutes in an air atmosphere is 40 mass % or less.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: April 19, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Keisuke Kusano, Wataru Yamada, Masahiro Iwasaki, Yuto Okazaki
  • Patent number: 11273628
    Abstract: An endless belt includes a polyimide resin layer containing a polyimide resin containing two or more components derived from tetracarboxylic dianhydrides and/or two or more components derived from diamine compounds; and at least one solvent selected from a solvent group A consisting of urea-based solvents, alkoxy-group-containing amide-based solvents, and ester-group-containing amide-based solvents in an amount of from about 50 ppm to about 2,000 ppm.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: March 15, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventor: Wataru Yamada
  • Publication number: 20220073183
    Abstract: Provided is an aerial vehicle having a structure in which a rotating body has been excluded from a portion that can be touched by a user during flight. An aerial vehicle includes: a balloon unit; a control unit provided at the bottom of the balloon unit; and a plurality of micro-mechanisms (micro blowers), each of which blows out air. The micro blowers have a structure in which a vibrating member is vibrated in a space in communication with a plurality of openings, thereby blowing out, through a second opening, the air that has flowed into the space through a first opening. The control unit controls the micro blowers to change the position or the attitude of the aerial vehicle.
    Type: Application
    Filed: December 25, 2019
    Publication date: March 10, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Wataru YAMADA, Hiroyuki MANABE
  • Publication number: 20220066335
    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: November 10, 2021
    Publication date: March 3, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Wataru YAMADA, Masahiro IWASAKI, Ryosuke FUJII, Keisuke KUSANO, Yuto OKAZAKI, Taisuke FUKUI
  • Publication number: 20220038147
    Abstract: A communication control method of controlling switching between propagation paths on a receiver side of a wireless communication system having a plurality of propagation paths, the communication control method including: detecting a position of a moving object on the periphery of the propagation paths and a size of the moving object every predetermined time determined in advance; predicting a movement destination of the moving object based on a movement speed and a movement direction of the moving object calculated from the position of the moving object every predetermined time detected in the detecting, and in a case where the propagation path in communication is blocked by the moving object, predicting a blocking ratio of the propagation path; determining whether or not the propagation path in communication needs to be switched to another propagation path based on a result of the prediction acquired in the predicting; and, in accordance with a determination that the propagation path in communication needs t
    Type: Application
    Filed: November 28, 2019
    Publication date: February 3, 2022
    Inventors: Mitsuki NAKAMURA, Wataru YAMADA, Yasushi TAKATORI
  • Publication number: 20220014285
    Abstract: The following are executed: received power acquisition processing; propagation loss calculation processing of calculating propagation losses between the transmitter and the receiver, based on received power; median processing of calculating a median of a plurality of the propagation losses calculated in the propagation loss calculation processing in a predetermined time period, and outputting the median as propagation losses to be used for subsequent processing; loss peak acquisition processing of acquiring a maximum value of the propagation losses output in the median processing; distance calculation processing of calculating a distance between the transmitter or the receiver and blocking entities, at least based on the maximum value, heights of antennas, and a wavelength of the radio communication; and congestion degree calculation processing of estimating a congestion degree by calculating the number of the blocking entities in chronological order, based on the distance, integrating the number for a predet
    Type: Application
    Filed: October 21, 2019
    Publication date: January 13, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Mitsuki NAKAMURA, Wataru YAMADA, Yasushi TAKATORI
  • Patent number: 11215935
    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: Grant
    Filed: July 12, 2020
    Date of Patent: January 4, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Masahiro Iwasaki, Wataru Yamada, Kenji Kajiwara, Kota Maki
  • Patent number: 11209740
    Abstract: An electrophotographic photoreceptor includes: a conductive base body and a photosensitive layer, in which an outermost surface layer of the electrophotographic photoreceptor contains fluorine-containing resin particles, and in which a fluorine atom concentration at a surface of the outermost surface layer is 1.5 to 5.0 times a fluorine atom concentration at a depth of 1 ?m from the surface of the outermost surface layer, or in which a number density ratio of aggregates of the fluorine-containing resin particles in a second region defined in this specification, to aggregates of he fluorine-containing resin particles in a first region defined in this specification is less than 0.95, and a ratio of an area ratio of the fluorine-containing resin particles in the second region, to an area ratio of the flourine-containing resin particles in the first region is within a range of 1±0.1.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: December 28, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Taketoshi Hoshizaki, Yusuke Watanabe, Keiko Matsuki, Yukiko Kamijo, Kenta Shingu, Tomoko Suzuki, Wataru Yamada
  • Publication number: 20210362608
    Abstract: A power storage device is appropriately heated in a low temperature environment, while preventing device configuration from becoming complicated, and minimizing a reduction in electric power utilization efficiency. A vehicle drive device includes a rotary electric machine that includes plurality of mutually independent coil sets each including coils of plurality of phases connected to each other, plurality of inverters that independently control respective plurality of coil sets, a power storage device, heat transfer system that transfers heat to power storage device, and control device that controls plurality of inverters.
    Type: Application
    Filed: September 5, 2019
    Publication date: November 25, 2021
    Applicant: AISIN CORPORATION
    Inventors: Akiya KUME, Yasuyuki SATO, Wataru YAMADA
  • Patent number: 11169455
    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: Grant
    Filed: July 12, 2020
    Date of Patent: November 9, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Masahiro Iwasaki, Wataru Yamada, Kenji Kajiwara, Kota Maki
  • Publication number: 20210336696
    Abstract: A light source separation method of separating light sources in a communication system performing visible-light communication in which information is transmitted by changing luminance of the light sources includes: acquiring luminance information of a communication area; dividing the communication area into a plurality of segments based on the luminance information; separating each light source performing the visible-light communication based on a luminance variation pattern of each segment; and converting light from the light source separated in the separating into a reception signal and outputting the reception signal.
    Type: Application
    Filed: October 21, 2019
    Publication date: October 28, 2021
    Inventors: Mitsuki NAKAMURA, Wataru YAMADA, Yasushi TAKATORI
  • Publication number: 20210311404
    Abstract: An electrophotographic photoreceptor includes: a conductive base body and a photosensitive layer, in which an outermost surface layer of the electrophotographic photoreceptor contains fluorine-containing non particles, and in which a fluorine atom concentration at a surface of the outermost surface layer is 1.5 to 5.0 times a fluorine atom concentration at a depth of 1 ?m from the surface of the outermost surface layer, or in which a number density ratio of aggregates of the fluorine-containing resin particles is a second region defined in this specification, to aggregates of the fluorine-containing resin particles in a first region defined in this specification is less than 0.95, and a ratio of an area ratio of the fluorine-containing resin particles in the second region, to an area ratio of the fluorine-containing resin particles in the first region is within a range of 1±0.1.
    Type: Application
    Filed: August 4, 2020
    Publication date: October 7, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Taketoshi HOSHIZAKI, Yusuke WATANABE, Keiko MATSUKI, Yukiko KAMIJO, Kenta SHINGU, Tomoko SUZUKI, Wataru YAMADA
  • Publication number: 20210302850
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer on the conductive substrate. The electrophotographic photoreceptor has an outermost surface layer that contains fluorine-containing resin particles and a fluorine-containing graft polymer. The fluorine-containing resin particles contain 0 or more and 30 or less carboxy groups per 106 carbon atoms. The outermost surface layer has a dielectric constant of 3.75 or more and 3.90 or less. The contact angle of pure water on the outermost surface layer is 90° or more.
    Type: Application
    Filed: July 20, 2020
    Publication date: September 30, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuto OKAZAKI, Wataru Yamada, Masahiro Iwasaki, Keisuke Kusano, Taisuke Fukui
  • Publication number: 20210302848
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer on the conductive substrate. The electrophotographic photoreceptor has an outermost surface layer that contains fluorine-containing resin particles and an antioxidant. The fluorine-containing resin particles contain 0 or more and 30 or less carboxy groups per 106 carbon atoms. A decrease in weight of the antioxidant when heated at 150° C. for 10 minutes in an air atmosphere is 40 mass % or less.
    Type: Application
    Filed: June 26, 2020
    Publication date: September 30, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Keisuke KUSANO, Wataru YAMADA, Masahiro IWASAKI, Yuto OKAZAKI
  • Patent number: 11126100
    Abstract: A dispersant-attached polytetrafluoroethylene particle includes a polytetrafluoroethylene particle and a dispersant that attaches to a surface of the polytetrafluoroethylene particle and contains a fluorine atom. The particle size distribution index [D50-D10] is less than 50 nm and the electrical conductivity is 7 ?S/cm or less.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: September 21, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventor: Wataru Yamada
  • Patent number: 11099492
    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: Grant
    Filed: January 16, 2020
    Date of Patent: August 24, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Keisuke Kusano, Wataru Yamada, Masahiro Iwasaki, Ryosuke Fujii, Yuto Okazaki, Taisuke Fukui
  • Publication number: 20210226111
    Abstract: A thermoelectric conversion element includes: a thermoelectric conversion layer containing a thiophene polymer, in which a peak intensity of a diffraction angle (2?) of 7.9° is 5 times or more a peak intensity of a diffraction angle (2?) of 25.8° in an X-ray diffraction spectrum of the thermoelectric conversion layer.
    Type: Application
    Filed: January 11, 2021
    Publication date: July 22, 2021
    Applicants: FUJI XEROX CO., LTD., NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY
    Inventors: Satoya SUGIURA, Wataru YAMADA, Katsuyoshi HOSHINO
  • Patent number: 11067911
    Abstract: A dispersant-attached polytetrafluoroethylene particle includes a polytetrafluoroethylene particle; and a dispersant that contains a fluorine atom and is attached to a surface of the polytetrafluoroethylene particle. The dispersant-attached polytetrafluoroethylene particle has a particle size distribution index [D50-D10] of 50 nm or more.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: July 20, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventor: Wataru Yamada
  • Patent number: 11066543
    Abstract: A dispersant attached polytetrafluoroethylene particle on whose surface a dispersant having a fluorine atom is attached has a content of perfluorooctanoic acid of from 0 ppb to 25 ppb with respect to the polytetrafluoroethylene particle, and a composition contains a polytetrafluoroethylene particle and a dispersant having a fluorine atom in which a content of perfluorooctanoic acid is from 0 ppb to 25 ppb with respect to the polytetrafluoroethylene particle.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: July 20, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Wataru Yamada, Takahiro Nakamura, Shingo Suda, Masahiro Iwasaki, Ryosuke Fujii, Keisuke Kusano, Yuto Okazaki, Taisuke Fukui
  • Patent number: 11062438
    Abstract: According to one embodiment, an equipment monitoring system includes an imager and a processor. For an equipment repeating a first operation, the imager repeatedly acquires a first image of the equipment imaged at a first timing of the first operation. When a new first image is acquired, the processor determines an abnormality of the equipment included in the new first image based on multiple previous first images.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: July 13, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Risa Sakai, Wataru Yamada