Patents by Inventor Kazutoshi Koshimizu

Kazutoshi Koshimizu 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: 20230397328
    Abstract: A wiring board includes a first substrate, a second substrate composed of a material different from a material of the first substrate, a wiring supported by the first substrate, and a terminal supported by the second substrate and connected to the wiring. The first and second substrates are disposed on a same side with respect to the wiring. In a plan view, the first substrate overlaps the wiring but not the terminal. In the plan view, the second substrate overlaps the terminal.
    Type: Application
    Filed: November 15, 2021
    Publication date: December 7, 2023
    Applicant: Fujikura Ltd.
    Inventor: Kazutoshi Koshimizu
  • Publication number: 20230007781
    Abstract: A method for manufacturing a wiring board includes: disposing a first resist material on a substrate; forming a first resist layer by curing the first resist material; forming a resin layer on a release film; forming a conductor portion on the resin layer; covering the conductor portion by disposing a second resist material on the resin layer; forming a second resist layer by curing the second resist material; bringing the first resist layer into contact with the second resist layer, and thereafter bonding the first resist layer and the second resist layer by thermocompression bonding; and releasing the release film from the resin layer.
    Type: Application
    Filed: November 18, 2020
    Publication date: January 5, 2023
    Applicant: Fujikura Ltd.
    Inventor: Kazutoshi Koshimizu
  • Patent number: 11421116
    Abstract: An electroconductive paste according to the present invention contains a binder (A), a silver powder (B), crosslinked resin particles (C) having a glass transition temperature of 35° C. or lower, and an organic solvent (D).
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: August 23, 2022
    Assignees: Fujikura Kasei Co., Ltd., Fujikura Ltd.
    Inventors: Katsutomo Wakabayashi, Yuka Azakami, Yuji Abe, Akinori Naruse, Kazutoshi Koshimizu
  • Patent number: 11337304
    Abstract: A stretchable wiring board includes: a first stretchable substrate; an overcoat layer; and a conductor layer interposed at least partly between the first stretchable substrate and the overcoat layer. The conductor layer includes a wiring portion covered with the overcoat layer and a connection portion that has a surface exposed from the overcoat layer. The exposed surface of the connection portion is flush with a top surface of the overcoat layer.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: May 17, 2022
    Assignee: FUJIKURA LTD.
    Inventor: Kazutoshi Koshimizu
  • Publication number: 20210348002
    Abstract: An electroconductive paste according to the present invention contains a binder (A), a silver powder (B), crosslinked resin particles (C) having a glass transition temperature of 35° C. or lower, and an organic solvent (D).
    Type: Application
    Filed: September 25, 2019
    Publication date: November 11, 2021
    Inventors: Katsutomo Wakabayashi, Yuka Azakami, Yuji Abe, Akinori Naruse, Kazutoshi Koshimizu
  • Publication number: 20210136912
    Abstract: A stretchable wiring body includes: a conductor that includes a binder and conductive particles dispersed in the binder; and soft resins that are embedded in the binder and are softer than the binder. The conductive particles are not covered with the soft resins.
    Type: Application
    Filed: March 6, 2018
    Publication date: May 6, 2021
    Applicant: Fujikura Ltd.
    Inventor: Kazutoshi Koshimizu
  • Publication number: 20210059046
    Abstract: A stretchable wiring board includes: a first stretchable substrate; an overcoat layer; and a conductor layer interposed at least partly between the first stretchable substrate and the overcoat layer. The conductor layer includes a wiring portion covered with the overcoat layer and a connection portion that has a surface exposed from the overcoat layer. The exposed surface of the connection portion is flush with a top surface of the overcoat layer.
    Type: Application
    Filed: March 19, 2019
    Publication date: February 25, 2021
    Applicant: Fujikura Ltd.
    Inventor: Kazutoshi Koshimizu
  • Patent number: 10691270
    Abstract: A method is provided for manufacturing a wiring board that includes a conductor part including a first line and a second line wider than the first line. The method includes: a first process of forming the first line and a boundary line corresponding to at least a portion of an outline of the second line near the first line; and a second process of forming a remaining portion of the second line.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: June 23, 2020
    Assignee: Fujikura Ltd.
    Inventors: Shinsuke Aoshima, Kazutoshi Koshimizu
  • Publication number: 20190018521
    Abstract: A method is provided for manufacturing a wiring board that includes a conductor part including a first line and a second line wider than the first line. The method includes: a first process of forming the first line and a boundary line corresponding to at least a portion of an outline of the second line near the first line; and a second process of forming a remaining portion of the second line.
    Type: Application
    Filed: December 22, 2016
    Publication date: January 17, 2019
    Applicant: FUJIKURA LTD.
    Inventors: Shinsuke Aoshima, Kazutoshi Koshimizu
  • Patent number: 9740317
    Abstract: A touch sensor (2) includes: a substrate (21); a net-shaped electrode (22) which is provided on the substrate (21) and includes conductive wires (221) arranged in a net form; and an outer edge wire (23) which is provided in at least a part of an outer edge of the net-shaped electrode (22) and is integrally formed with the net-shaped electrode. The conductive wire (221) includes a large-width portion which is provided in at least one of lateral parts of a connection portion and gradually widens according to approaching the outer edge wire (23), and the connection portion is a portion of the conductive wire (221) which is connected to the outer edge wire (23). Expressions (1) and (2) are satisfied: A?100 [?m]??(1) B/A?½??(2). In Expressions (1) and (2), “A” is a width of the outer edge wire (23), and “B” is a largest width of the conductive wires (221) in a portion where the large-width portion (222) is provided.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: August 22, 2017
    Assignee: FUJIKURA LTD.
    Inventors: Kazutoshi Koshimizu, Shinsuke Aoshima, Yusuke Iguchi
  • Publication number: 20160011683
    Abstract: A touch sensor (2) includes: a substrate (21); a net-shaped electrode (22) which is provided on the substrate (21) and includes conductive wires (221) arranged in a net form; and an outer edge wire (23) which is provided in at least a part of an outer edge of the net-shaped electrode (22) and is integrally formed with the net-shaped electrode. The conductive wire (221) includes a large-width portion which is provided in at least one of lateral parts of a connection portion and gradually widens according to approaching the outer edge wire (23), and the connection portion is a portion of the conductive wire (221) which is connected to the outer edge wire (23). Expressions (1) and (2) are satisfied: A?100 [?m]??(1) B/A?½??(2). In Expressions (1) and (2), “A” is a width of the outer edge wire (23), and “B” is a largest width of the conductive wires (221) in a portion where the large-width portion (222) is provided.
    Type: Application
    Filed: March 28, 2014
    Publication date: January 14, 2016
    Applicant: FUJIKURA LTD.
    Inventors: Kazutoshi KOSHIMIZU, Shinsuke AOSHIMA, Yusuke IGUCHI
  • Patent number: 8993895
    Abstract: The present invention is a membrane wiring board provided with an insulating substrate, and at least one circuit portion provided on the insulating substrate and obtained by coating a circuit layer, formed by an electrically conductive paste containing electrically conductive particles, with an insulating coating layer, wherein the circuit layer contains a resin component having a gel fraction of 90% or more.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: March 31, 2015
    Assignee: Fujikura Ltd.
    Inventor: Kazutoshi Koshimizu
  • Patent number: 8734910
    Abstract: The present invention provides an electroconductive paste for electron beam curing that allows the formation of a circuit board having an electroconductive layer that has superior hardness and bendability as well as superior adhesion to a plastic base even if used in a high-temperature environment. The present invention is an electroconductive paste for electron beam curing comprising an electroconductive powder, a radical polymerizable composition and a plasticizer, wherein the plasticizer is incorporated at a ratio of 5 parts by mass to 20 parts by mass based on 100 parts by mass of the radical polymerizable composition.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: May 27, 2014
    Assignees: Fujikura Ltd., Goo Chemical Co., Ltd
    Inventors: Kazutoshi Koshimizu, Shigeo Ota
  • Publication number: 20130020114
    Abstract: The present invention is a membrane wiring board provided with an insulating substrate, and at least one circuit portion provided on the insulating substrate and obtained by coating a circuit layer, formed by an electrically conductive paste containing electrically conductive particles, with an insulating coating layer, wherein the circuit layer contains a resin component having a gel fraction of 90% or more.
    Type: Application
    Filed: September 28, 2012
    Publication date: January 24, 2013
    Inventor: Kazutoshi KOSHIMIZU
  • Publication number: 20120269984
    Abstract: The present invention provides an electroconductive paste for electron beam curing that allows the formation of a circuit board having an electroconductive layer that has superior hardness and bendability as well as superior adhesion to a plastic base even if used in a high-temperature environment. The present invention is an electroconductive paste for electron beam curing comprising an electroconductive powder, a radical polymerizable composition and a plasticizer, wherein the plasticizer is incorporated at a ratio of 5 parts by mass to 20 parts by mass based on 100 parts by mass of the radical polymerizable composition.
    Type: Application
    Filed: June 26, 2012
    Publication date: October 25, 2012
    Applicants: Goo Chemical Co., Ltd., FUJIKURA LTD.
    Inventors: Kazutoshi Koshimizu, Shigeo Ota