Patents by Inventor Akira Ichiki

Akira Ichiki 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: 11053401
    Abstract: Provided are a metal dispersion liquid which includes tabular metal particles A having an average aspect ratio of greater than 20, which is a ratio of an average equivalent circle diameter to an average thickness, and an average equivalent circle diameter of 50 nm to 1000 nm, metal particles B having an average aspect ratio of 1 to 15 and an average equivalent circle diameter of 1 nm to 150 nm, and water, in which an average equivalent circle diameter A1 of the tabular metal particles A and an average equivalent circle diameter B1 of the metal particles B satisfy Expression (1), and a content a of the tabular metal particles A and a content b of the metal particles B with respect to a total mass of the metal dispersion liquid satisfy Expression (2); and an application thereof. A1>B1??Expression (1) 0.0001?b/(a+b)?0.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: July 6, 2021
    Assignee: FUJIFILM CORPORATION
    Inventors: Motoi Harada, Naoharu Kiyoto, Akira Ichiki
  • Publication number: 20200181435
    Abstract: Provided are a metal dispersion liquid including tabular metal particles, a water-soluble resin which contains at least one functional group selected from the group consisting of a carboxy group, an amino group, and a thiol group, a polycarboxylic acid having a partial structure which connects carbon atoms in two carboxy groups to each other and has four or more linearly bonded atoms, or a salt thereof, and water; and applications thereof.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Inventors: Motoi HARADA, Naoharu KIYOTO, Akira ICHIKI
  • Publication number: 20200181434
    Abstract: Provided are a metal dispersion liquid which includes tabular metal particles A having an average aspect ratio of greater than 20, which is a ratio of an average equivalent circle diameter to an average thickness, and an average equivalent circle diameter of 50 nm to 1000 nm, metal particles B having an average aspect ratio of 1 to 15 and an average equivalent circle diameter of 1 nm to 150 nm, and water, in which an average equivalent circle diameter A1 of the tabular metal particles A and an average equivalent circle diameter B1 of the metal particles B satisfy Expression (1), and a content a of the tabular metal particles A and a content b of the metal particles B with respect to a total mass of the metal dispersion liquid satisfy Expression (2); and an application thereof. A1>B1 ??Expression (1) 0.0001?b/(a+b)?0.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Inventors: Motoi HARADA, Naoharu KIYOTO, Akira ICHIKI
  • Publication number: 20190235672
    Abstract: A conductive sheet for a touch sensor including a base material, a pattern-like conductive portion that is disposed on the base material and is made of a fine metal wire, and a transparent insulation layer disposed on the conductive portion, in which the transparent insulation layer is a layer formed using a composition for forming the transparent insulation layer including a predetermined compound.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Akira ICHIKI, Masaki HACHIYA, Takuya INOUE
  • Publication number: 20190056824
    Abstract: A conductive sheet for a touch sensor includes a base material, a conductive portion that is disposed on the base material and is made of a fine metal wire, and a transparent insulation layer that is disposed on the conductive portion, in which the transparent insulation layer includes a crosslinking structure, and an indentation hardness of the transparent insulation layer is 200 MPa or less.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Akira ICHIKI, Keisho FUNATSU
  • Patent number: 10198132
    Abstract: An electroconductive film and a method for manufacturing the electroconductive film, having an insulating substrate and an electrode including a thin metal wire disposed on the surface of the insulating substrate, wherein the width of the thin metal wire varies, the difference between the maximum wire width and the minimum wire width of the thin metal wire is 20% to less than 75% of the average wire width of the thin metal wire, and the average wire width is 1-7 ?m.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: February 5, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Akira Ichiki, Nozomu Tonoike
  • Patent number: 9891777
    Abstract: An object of the invention is to provide a method for more easily manufacturing a touch-panel conductive sheet in which end portions of lead-out wires are collected on one surface side of a substrate with high productivity, and a touch-panel conductive sheet.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: February 13, 2018
    Assignee: FUJIFILM Corporation
    Inventor: Akira Ichiki
  • Patent number: 9485856
    Abstract: A transparent electrode sheet includes a transparent support having thereon a patterned electrode, wherein the electrode is made from a metal thin wire, a thickness of the metal thin wire is 0.1 ?m or more, and an absolute value of a difference between a reflection chromaticity b1* of a surface of the electrode at far side from the transparent support and a reflection chromaticity b2* of a surface of the electrode at near side to the transparent support is not more than 2.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: November 1, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Akira Ichiki
  • Publication number: 20160253002
    Abstract: An electroconductive film and a method for manufacturing the electroconductive film, having an insulating substrate and an electrode including a thin metal wire disposed on the surface of the insulating substrate, wherein the width of the thin metal wire varies, the difference between the maximum wire width and the minimum wire width of the thin metal wire is 20% to less than 75% of the average wire width of the thin metal wire, and the average wire width is 1-7 ?m.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 1, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Akira ICHIKI, Nozomu TONOIKE
  • Publication number: 20160202805
    Abstract: An electroconductive sheet and a touch panel having a first electroconductive section and a second electroconductive section, the second electroconductive section being disposed on the display-panel side. The first electroconductive section has a plurality of first electroconductive patterns arranged in the x-direction, a plurality of first large grids being respectively connected to the first electroconductive patterns. The second electroconductive section has a plurality of second electroconductive patterns arranged in the y-direction, a plurality of second large grids being respectively connected to the second electroconductive patterns. The area occupied by thin metal wires in the second electroconductive patterns is larger than the area occupied by thin metal wires in the first electroconductive patterns. The area occupied by thin metal wires in the second large grids is larger than the area occupied by thin metal wires in the first large grids.
    Type: Application
    Filed: March 18, 2016
    Publication date: July 14, 2016
    Applicant: FUJIFILM Corporation
    Inventor: Akira ICHIKI
  • Patent number: 9312048
    Abstract: An electroconductive sheet and a touch panel having a first electroconductive section and a second electroconductive section, the second electroconductive section being disposed on the display-panel side. The first electroconductive section has a plurality of first electroconductive patterns arranged in the x-direction, a plurality of first large grids being respectively connected to the first electroconductive patterns. The second electroconductive section has a plurality of second electroconductive patterns arranged in the y-direction, a plurality of second large grids being respectively connected to the second electroconductive patterns. The area occupied by thin metal wires in the second electroconductive patterns is larger than the area occupied by thin metal wires in the first electroconductive patterns. The area occupied by thin metal wires in the second large grids is larger than the area occupied by thin metal wires in the first large grids.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: April 12, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Akira Ichiki
  • Patent number: 9271394
    Abstract: A transparent electrode sheet includes a transparent support having thereon patterned electrodes, and an absolute value of a difference between a reflection chromaticity of a surface of the electrode of far side from the transparent support and a reflection chromaticity of a surface of the electrode of near side to the transparent support is not more than 2.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: February 23, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Akira Ichiki
  • Publication number: 20160034081
    Abstract: An object of the invention is to provide a method for more easily manufacturing a touch-panel conductive sheet in which end portions of lead-out wires are collected on one surface side of a substrate with high productivity, and a touch-panel conductive sheet.
    Type: Application
    Filed: October 14, 2015
    Publication date: February 4, 2016
    Applicant: FUJIFILM CORPORATION
    Inventor: Akira ICHIKI
  • Publication number: 20140267954
    Abstract: A transparent electrode sheet includes a transparent support having thereon a patterned electrode, wherein the electrode is made from a metal thin wire, a thickness of the metal thin wire is 0.1 ?m or more, and an absolute value of a difference between a reflection chromaticity b1* of a surface of the electrode at far side from the transparent support and a reflection chromaticity b2* of a surface of the electrode at near side to the transparent support is not more than 2.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: FUJIFILM CORPORATION
    Inventor: Akira ICHIKI
  • Publication number: 20140054070
    Abstract: An electroconductive sheet and a touch panel, wherein the electroconductive sheet has a first electroconductive section and a second electroconductive section; the first electroconductive section has a plurality of first electroconductive patterns arrayed in one direction and to which a plurality of first electrodes, respectively, are connected; the second electroconductive section has a plurality of second electroconductive patterns arrayed in a direction orthogonal to the arrayed direction of the first electroconductive patterns and to which a plurality of second electrodes, respectively, are connected; and the electroconductive sheet has dummy electrodes disposed between the first electrodes and the second electrodes, and other dummy electrodes disposed in portions corresponding to the second electrodes.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 27, 2014
    Applicant: FUJIFILM CORPORATION
    Inventor: Akira ICHIKI
  • Patent number: 8658907
    Abstract: A conductive film has a transparent support, a first conductive silver image disposed on one main surface of the transparent support, and a second conductive silver image disposed on the other main surface of the transparent support. The first and second conductive silver images are obtained by forming at least one silver halide emulsion layer on each of the surfaces of the transparent support and then exposing and developing the silver halide emulsion layer. The first silver image and the second silver image each contain a net-like structure in a region required to be transparent. The net-like structure comprises thin metal wires having a line width of 10 ?m or less, and forms a conductive layer having a sheet resistance of 50 ohm/sq or less.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: February 25, 2014
    Assignee: Fujifilm Corporation
    Inventor: Akira Ichiki
  • Publication number: 20130327560
    Abstract: An electroconductive sheet and a touch panel having a first electroconductive section and a second electroconductive section, the second electroconductive section being disposed on the display-panel side. The first electroconductive section has a plurality of first electroconductive patterns arranged in the x-direction, a plurality of first large grids being respectively connected to the first electroconductive patterns. The second electroconductive section has a plurality of second electroconductive patterns arranged in the y-direction, a plurality of second large grids being respectively connected to the second electroconductive patterns. The area occupied by thin metal wires in the second electroconductive patterns is larger than the area occupied by thin metal wires in the first electroconductive patterns. The area occupied by thin metal wires in the second large grids is larger than the area occupied by thin metal wires in the first large grids.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: FUJIFILM Corporation
    Inventor: Akira ICHIKI
  • Publication number: 20130299216
    Abstract: A transparent electrode sheet includes a transparent support having thereon patterned electrodes, and an absolute value of a difference between a reflection chromaticity of a surface of the electrode of far side from the transparent support and a reflection chromaticity of a surface of the electrode of near side to the transparent support is not more than 2.
    Type: Application
    Filed: July 17, 2013
    Publication date: November 14, 2013
    Inventor: Akira ICHIKI
  • Patent number: 8513878
    Abstract: A spontaneous emission display includes a support, a first electrode section provided on the support and having a fine wire structure portion made of a conductive metal and a translucent conductive film, and a display section formed on the first electrode section and having a light-emitting layer. The volume resistance of the fine wire structure portion of the first electrode is 10?4 ?·cm or less and/or the surface resistance thereof is 100 ?/sq or less. The volume resistance of the conductive film is 0.05 ?·cm or more and/or the surface resistance thereof is 100 ?/sq or more. When the surface resistance of the first electrode section before a bending test is denoted by R1 and that after the bending test is denoted by R2, R2/R1<18 is satisfied.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: August 20, 2013
    Assignee: Fujifilm Corporation
    Inventors: Tsukasa Tokunaga, Makoto Kusuoka, Tadashi Kuriki, Akira Ichiki
  • Patent number: 8314986
    Abstract: A transparent electromagnetic wave-shielding filter, containing a support, a conductive layer provided on the support, and a hard coat layer provided on the conductive layer, wherein the conductive layer is formed by subjecting an emulsion layer which contains a silver halide and a binder and is coated on the support, to exposure and developing process, wherein the hard coat layer is formed by coating a coating liquid for forming the hard coat layer with a solvent on the conductive layer, and wherein the emulsion layer contains a compound soluble in the solvent of the coating liquid for forming the hard coat layer.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: November 20, 2012
    Assignee: Fujifilm Corporation
    Inventors: Hiroshi Sakuyama, Akira Ichiki, Hideaki Nomura