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: 20230397328Abstract: 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: ApplicationFiled: November 15, 2021Publication date: December 7, 2023Applicant: Fujikura Ltd.Inventor: Kazutoshi Koshimizu
-
Publication number: 20230007781Abstract: 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: ApplicationFiled: November 18, 2020Publication date: January 5, 2023Applicant: Fujikura Ltd.Inventor: Kazutoshi Koshimizu
-
Patent number: 11421116Abstract: 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: GrantFiled: September 25, 2019Date of Patent: August 23, 2022Assignees: Fujikura Kasei Co., Ltd., Fujikura Ltd.Inventors: Katsutomo Wakabayashi, Yuka Azakami, Yuji Abe, Akinori Naruse, Kazutoshi Koshimizu
-
Patent number: 11337304Abstract: 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: GrantFiled: March 19, 2019Date of Patent: May 17, 2022Assignee: FUJIKURA LTD.Inventor: Kazutoshi Koshimizu
-
Publication number: 20210348002Abstract: 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: ApplicationFiled: September 25, 2019Publication date: November 11, 2021Inventors: Katsutomo Wakabayashi, Yuka Azakami, Yuji Abe, Akinori Naruse, Kazutoshi Koshimizu
-
Publication number: 20210136912Abstract: 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: ApplicationFiled: March 6, 2018Publication date: May 6, 2021Applicant: Fujikura Ltd.Inventor: Kazutoshi Koshimizu
-
Publication number: 20210059046Abstract: 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: ApplicationFiled: March 19, 2019Publication date: February 25, 2021Applicant: Fujikura Ltd.Inventor: Kazutoshi Koshimizu
-
Patent number: 10691270Abstract: 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: GrantFiled: December 22, 2016Date of Patent: June 23, 2020Assignee: Fujikura Ltd.Inventors: Shinsuke Aoshima, Kazutoshi Koshimizu
-
Publication number: 20190018521Abstract: 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: ApplicationFiled: December 22, 2016Publication date: January 17, 2019Applicant: FUJIKURA LTD.Inventors: Shinsuke Aoshima, Kazutoshi Koshimizu
-
Patent number: 9740317Abstract: 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: GrantFiled: March 28, 2014Date of Patent: August 22, 2017Assignee: FUJIKURA LTD.Inventors: Kazutoshi Koshimizu, Shinsuke Aoshima, Yusuke Iguchi
-
Publication number: 20160011683Abstract: 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: ApplicationFiled: March 28, 2014Publication date: January 14, 2016Applicant: FUJIKURA LTD.Inventors: Kazutoshi KOSHIMIZU, Shinsuke AOSHIMA, Yusuke IGUCHI
-
Patent number: 8993895Abstract: 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: GrantFiled: September 28, 2012Date of Patent: March 31, 2015Assignee: Fujikura Ltd.Inventor: Kazutoshi Koshimizu
-
Patent number: 8734910Abstract: 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: GrantFiled: June 26, 2012Date of Patent: May 27, 2014Assignees: Fujikura Ltd., Goo Chemical Co., LtdInventors: Kazutoshi Koshimizu, Shigeo Ota
-
Publication number: 20130020114Abstract: 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: ApplicationFiled: September 28, 2012Publication date: January 24, 2013Inventor: Kazutoshi KOSHIMIZU
-
Publication number: 20120269984Abstract: 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: ApplicationFiled: June 26, 2012Publication date: October 25, 2012Applicants: Goo Chemical Co., Ltd., FUJIKURA LTD.Inventors: Kazutoshi Koshimizu, Shigeo Ota