Patents by Inventor Ryo Sekiguchi

Ryo Sekiguchi 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: 20220282019
    Abstract: The present invention has an object to provide a modified polyolefin resin capable of forming a coating film that is excellent in water-resistant adhesiveness under a high temperature condition. The present invention provides a modified polyolefin resin including a graft-modified product in which a component (A) that is a polyolefin resin is graft-modified with a component (B) that is an ?, ?-unsaturated carboxylic acid or a derivative thereof, and having a tensile modulus of 250 MPa or higher, and a weight-average molecular weight of 70,000 or more and less than 200,000.
    Type: Application
    Filed: August 24, 2020
    Publication date: September 8, 2022
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Ryo KOIKE, Fumiyasu SAKAKIBARA, Shunji SEKIGUCHI, Ryuji DOI
  • Patent number: 11419512
    Abstract: It is possible to improve a measurement accuracy of a liquid flow volume, thereby improving reproducibility of a measured value. Provided is a flow volume measuring device including a light source which emits light to a measuring-target region; a light receiving element which receives light scattered at the measuring-target region from the light emitted from the light source; a contact member having translucency with respect to a wavelength of the emitted light and a wavelength of the scattered light, the contact member including a surface which faces the measuring-target region and with which the measuring-target region is contactable over the entire surface; and a flow volume measuring unit which measures a flow volume of liquid flowing through the measuring-target region based upon the scattered light.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: August 23, 2022
    Inventors: Renshi Sawada, Hirofumi Nogami, Tomohito Sekiguchi, Yuma Hayashida, Ryo Inoue, Ryuta Shiraishi
  • Patent number: 11327425
    Abstract: A fixing belt includes an annular polyimide resin base layer having a lower imidization ratio in the outer peripheral surface than in a central portion in the thickness direction, a metal layer provided on the outer peripheral surface of the polyimide resin base layer, and an elastic layer provided on the outer peripheral surface of the metal layer.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: May 10, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Ryohei Yoshikawa, Tomotake Inagaki, Ryo Sekiguchi
  • Publication number: 20210132532
    Abstract: A fixing belt includes an annular resin base layer having a water absorption rate of 3% or less, a metal layer provided on the outer peripheral surface of the resin base layer, and an elastic layer provided on the outer peripheral surface of the metal layer.
    Type: Application
    Filed: April 14, 2020
    Publication date: May 6, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomotake INAGAKI, Ryohei YOSHIKAWA, Ryo SEKIGUCHI
  • Publication number: 20210132533
    Abstract: A fixing belt includes an annular polyimide resin base layer having a lower imidization ratio in the outer peripheral surface than in a central portion in the thickness direction, a metal layer provided on the outer peripheral surface of the polyimide resin base layer, and an elastic layer provided on the outer peripheral surface of the metal layer.
    Type: Application
    Filed: April 20, 2020
    Publication date: May 6, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Ryohei YOSHIKAWA, Tomotake INAGAKI, Ryo SEKIGUCHI
  • Patent number: 10990048
    Abstract: A fixing belt includes an annular resin base layer having a water absorption rate of 3% or less, a metal layer provided on the outer peripheral surface of the resin base layer, and an elastic layer provided on the outer peripheral surface of the metal layer.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: April 27, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tomotake Inagaki, Ryohei Yoshikawa, Ryo Sekiguchi
  • Patent number: 10878898
    Abstract: A memory system includes a first memory, a second memory, and a first circuit. The first memory includes a memory cell array including memory cell transistors, and a peripheral circuit configured to read data of a plurality of bits stored in a memory cell transistor of the memory cell array based on a comparison between threshold voltages of the memory cell transistor and at least a part of n determination voltages (n?3). The first circuit is configured to calculate an estimated value of each of n?m determination voltages based on values of m determination voltages (2?m?n?1) among the n determination voltages, and calculate a difference between a value of each of the n?m determination voltages and a corresponding estimated value. The second memory is configured to store values of the m determination voltages and the difference for each of the n?m determination voltages.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: December 29, 2020
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Ryo Sekiguchi, Shingo Yanagawa, Yasuhiko Kurosawa, Eriko Akaihata
  • Publication number: 20200090742
    Abstract: A memory system includes a first memory, a second memory, and a first circuit. The first memory includes a memory cell array including memory cell transistors, and a peripheral circuit configured to read data of a plurality of bits stored in a memory cell transistor of the memory cell array based on a comparison between threshold voltages of the memory cell transistor and at least a part of n determination voltages (n?3). The first circuit is configured to calculate an estimated value of each of n?m determination voltages based on values of m determination voltages (2?m?n?1) among the n determination voltages, and calculate a difference between a value of each of the n?m determination voltages and a corresponding estimated value. The second memory is configured to store values of the m determination voltages and the difference for each of the n?m determination voltages.
    Type: Application
    Filed: March 4, 2019
    Publication date: March 19, 2020
    Inventors: Ryo SEKIGUCHI, Shingo YANAGAWA, Yasuhiko KUROSAWA, Eriko AKAIHATA
  • Patent number: 9034543
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a charge generating layer provided on the conductive substrate; a charge transporting layer provided on the charge generating layer, which is configured to include a charge transporting material and a polycarbonate; and an outermost surface layer provided on the charge transporting layer, which is constituted with a cured film formed of a composition including a chain polymerizable compound having at least a charge transporting skeleton and a chain polymerizable functional group in the same molecule, and has an A value represented by the following equation (1) being from 0.1 to 0.3, and a B value represented by the following equation (2) being 0.02 or less, each of which is determined by an Attenuated total reflection Fourier transform infrared spectroscopy: A=(S1/S13)?(S0/S03)??Equation (1) B=S2/S23??Equation (2).
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: May 19, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yuko Iwadate, Wataru Yamada, Hidekazu Hirose, Kenji Kajiwara, Katsumi Nukada, Ryo Sekiguchi, Takayuki Ito
  • Publication number: 20140295337
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a charge generating layer provided on the conductive substrate; a charge transporting layer provided on the charge generating layer, which is configured to include a charge transporting material and a polycarbonate; and an outermost surface layer provided on the charge transporting layer, which is constituted with a cured film formed of a composition including a chain polymerizable compound having at least a charge transporting skeleton and a chain polymerizable functional group in the same molecule, and has an A value represented by the following equation (1) being from 0.1 to 0.3, and a B value represented by the following equation (2) being 0.02 or less, each of which is determined by an Attenuated total reflection Fourier transform infrared spectroscopy: A=(S1/S13)?(S0/S03)??Equation (1) B=S2/S23??Equation (2).
    Type: Application
    Filed: September 3, 2013
    Publication date: October 2, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuko IWADATE, Wataru YAMADA, Hidekazu HIROSE, Kenji KAJIWARA, Katsumi NUKADA, Ryo SEKIGUCHI, Takayuki ITO
  • Patent number: 7715777
    Abstract: An image forming apparatus includes an image carrier; a charger that electrically charges the image carrier; an image forming section that forms an electrostatic latent image on the image carrier and develops the electrostatic latent image; a transferring-fixing section that transfers the image from the image carrier and fix the image onto a recording medium; a cleaning member; and a cleaning member moving section. The cleaning member cleans an unnecessary substance adhering onto a surface of the image carrier by abutting against the surface of the image carrier, and is capable of moving between an abutment position and a separation position where the cleaning member is separated from the image carrier. The cleaning member moving section moves the cleaning member from the separation position to the abutment position in accordance with a surface resistance of the surface of the image carrier.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: May 11, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masaharu Shirai, Nobuhide Inaba, Ryo Sekiguchi, Toshie Furuya
  • Publication number: 20090035036
    Abstract: An image forming apparatus includes an image carrier; a charger that electrically charges the image carrier; an image forming section that forms an electrostatic latent image on the image carrier and develops the electrostatic latent image; a transferring-fixing section that transfers the image from the image carrier and fix the image onto a recording medium; a cleaning member; and a cleaning member moving section. The cleaning member cleans an unnecessary substance adhering onto a surface of the image carrier by abutting against the surface of the image carrier, and is capable of moving between an abutment position and a separation position where the cleaning member is separated from the image carrier. The cleaning member moving section moves the cleaning member from the separation position to the abutment position in accordance with a surface resistance of the surface of the image carrier.
    Type: Application
    Filed: March 27, 2008
    Publication date: February 5, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masaharu Shirai, Nobuhide Inaba, Ryo Sekiguchi, Toshie Furuya
  • Publication number: 20060029870
    Abstract: An electrophotographic photoreceptor of the present invention comprises a conductive support and a photosensitive layer. The photosensitive layer on the farthest side from the conductive support, includes a phenol derivative-containing layer which contains a phenol derivative having a methylol group and a charge transport material having at least one selected from the group consisting of a hydroxyl group, a carboxyl group, an alkoxysilyl group, an epoxy group, a thiol group and an amino group. An infrared absorption spectrum of the phenol derivative-containing layer satisfies the conditions represented by the following formula (1): (P2/P1)?0.2??(1) P1 is an absorbance of a maximum absorption peak in a range of 1560 cm?1 to 1640 cm?1, and P2 is an absorbance of a maximum absorption peak in a range of 1645 cm?1 to 1700 cm?1.
    Type: Application
    Filed: February 25, 2005
    Publication date: February 9, 2006
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Katsumi Nukada, Masahiro Iwasaki, Kenji Yao, Ryo Sekiguchi, Wataru Yamada