Patents by Inventor Yasuhiro Mitamura
Yasuhiro Mitamura 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).
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Patent number: 10125294Abstract: In an adhesive sheet, temperature dependence of a relative dielectric constant that is determined by a test for evaluating temperature dependence is equal to or less than 30%, and a 180° peel strength determined by a test for evaluating adhesiveness is equal to or greater than 0.20 N/mm. The adhesive sheet can inhibit the occurrence of malfunctioning of a capacitance-type touch panel in an environment of a wide temperature range from a low temperature to a high temperature, and can be included in a laminate for a touch panel and a capacitance-type touch panel.Type: GrantFiled: September 11, 2015Date of Patent: November 13, 2018Assignee: FUJIFILM CorporationInventors: Yasuhiro Mitamura, Michihiro Shibata, Shinya Ogikubo
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Patent number: 9886135Abstract: The invention provides a capacitive touch panel that hardly cause malfunction in a wide range of temperature environment from a low temperature to a high temperature. The capacitive touch panel according to the invention is a capacitive touch panel including a display device, a lower adhesive layer, a capacitive touch panel sensor, an upper adhesive layer, and a protective substrate in this order, in which a maximum value of tan ? of the upper adhesive layer and a maximum value of tan ? of the lower adhesive layer obtained from a temperature dependency evaluation test is 0.08 or less, and tan ? of the lower adhesive layer at each temperature of every 20° C. from ?40° C. to 80° C. is equal to or less than tan ? of the upper adhesive layer.Type: GrantFiled: May 17, 2016Date of Patent: February 6, 2018Assignee: FUJIFILM CorporationInventors: Shinya Ogikubo, Michihiro Shibata, Yasuhiro Mitamura
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Patent number: 9740350Abstract: A capacitance touch panel includes a display, a lower adhesive layer, a capacitance touch panel sensor, an upper adhesive layer, and a protective substrate, which are formed in this order. A temperature dependency of relative permittivity in the upper adhesive layer and a temperature dependency of relative permittivity in the lower adhesive layer as determined by a temperature dependency evaluation test are both up to 30%.Type: GrantFiled: September 11, 2015Date of Patent: August 22, 2017Assignee: FUJIFILM CorporationInventors: Shinya Ogikubo, Michihiro Shibata, Yasuhiro Mitamura
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Patent number: 9645691Abstract: A capacitance touch panel of the invention includes a display, a lower adhesive layer, a capacitance touch panel sensor, an upper adhesive layer and a protective substrate, which are formed in this order. Relative permittivity A in the upper adhesive layer and relative permittivity B in the lower adhesive layer satisfy expression (1): [relative permittivity A?relative permittivity B . . . (1)] at respective temperatures set in increments of 20° C. from ?40° C. to 80° C., and a temperature dependency of the relative permittivity B in the lower adhesive layer as determined by a temperature dependency evaluation test is up to 30%.Type: GrantFiled: August 17, 2015Date of Patent: May 9, 2017Assignee: FUJIFILM CorporationInventors: Shinya Ogikubo, Michihiro Shibata, Yasuhiro Mitamura
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Patent number: 9578732Abstract: A composition for forming a silver ion diffusion-suppressing layer includes an insulating resin and a compound including: a structure selected from the group consisting of a triazole structure, a thiadiazole structure and a benzimidazole structure; a mercapto group; and at least one hydrocarbon group optionally containing a heteroatom, with the total number of carbon atoms in the hydrocarbon group or groups being 5 or more. The composition for forming a silver ion diffusion-suppressing layer allows formation of a silver ion diffusion-suppressing layer capable of suppressing silver ion migration between metal interconnects containing silver or a silver alloy to improve the reliability on the insulation between the metal interconnects.Type: GrantFiled: August 25, 2014Date of Patent: February 21, 2017Assignee: FUJIFILM CORPORATIONInventors: Yasuhiro Mitamura, Masaya Nakayama, Yuki Matsunami
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Publication number: 20160362586Abstract: There is provided a conductive film laminate used in a touch panel, including: a first pressure sensitive adhesive layer; a first conductive layer; a substrate; a second conductive layer; and a second pressure sensitive adhesive layer, in this order, in which a total moisture content of the substrate, the first pressure sensitive adhesive layer, and the second pressure sensitive adhesive layer is 1.0 g/m2 or less. There are provided a conductive film laminate, in which, even in a severe environment of high temperature and high humidity, a change of electrostatic capacitance between two layers of conductive films is small, high sensitivity can be maintained, and thus operation failure or malfunction can be prevented, and a touch panel using this conductive film laminate.Type: ApplicationFiled: August 23, 2016Publication date: December 15, 2016Applicant: FUJIFILM CorporationInventors: Naoharu KIYOTO, Yasuhiro MITAMURA, Reiji HIGUCHI, Yuuichi SHIRASAKI
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Publication number: 20160259482Abstract: The invention provides a capacitive touch panel that hardly cause malfunction in a wide range of temperature environment from a low temperature to a high temperature. The capacitive touch panel according to the invention is a capacitive touch panel including a display device, a lower adhesive layer, a capacitive touch panel sensor, an upper adhesive layer, and a protective substrate in this order, in which a maximum value of tan ? of the upper adhesive layer and a maximum value of tan ? of the lower adhesive layer obtained from a temperature dependency evaluation test is 0.08 or less, and tan ? of the lower adhesive layer at each temperature of every 20° C. from ?40° C. to 80° C. is equal to or less than tan ? of the upper adhesive layer.Type: ApplicationFiled: May 17, 2016Publication date: September 8, 2016Applicant: FUJIFILM CorporationInventors: Shinya OGIKUBO, Michihiro SHIBATA, Yasuhiro MITAMURA
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Publication number: 20160253035Abstract: A laminate for a touch panel suppresses false operation through a wide range of temperatures. A flat panel display includes the laminate. The laminate includes an adhesive layer, and a capacitance touch panel sensor, in which the adhesive layer includes a poly(meth)acrylate which is formed by polymerizing (meth)acrylate and which has a polycyclic aliphatic hydrocarbon group and a saturated chain hydrocarbon group, the (meth)acrylate compound includes at least one type or 2 or more types of (meth)acrylate X which is represented by Formula (X) and which has a polycyclic aliphatic hydrocarbon group with 7 to 30 carbon atoms and one type or 2 or more types of (meth)acrylate Y which is represented by Formula (Y) and which has a saturated chain hydrocarbon group with 8 to 30 carbon atoms, and a temperature dependency of relative permittivity of the adhesive layer and a maximum value of relative permittivity are predetermined values.Type: ApplicationFiled: May 11, 2016Publication date: September 1, 2016Applicant: FUJIFILM CorporationInventors: Yasuhiro MITAMURA, Michihiro SHIBATA, Reiji HIGUCHI
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Publication number: 20160216809Abstract: Provided is a laminate for a touch panel that is a laminate that is used in a touch panel, and that can prevent migration of wiring caused by incursion of moisture. The laminate for a touch panel includes a substrate; wiring that is formed on a surface of the substrate; and an adhesive layer that is in contact with the wiring and is provided on the substrate, in which moisture permeability of the adhesive layer is 40 g/(m2·day) or less, and a shortest distance from an end surface to the wiring is 500 ?m or greater.Type: ApplicationFiled: April 5, 2016Publication date: July 28, 2016Applicant: FUJIFILM CorporationInventors: Michihiro SHIBATA, Yasuhiro MITAMURA, Shinya OGIKUBO, Reiji HIGUCHI
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Publication number: 20160002506Abstract: In an adhesive sheet, temperature dependence of a relative dielectric constant that is determined by a test for evaluating temperature dependence is equal to or less than 30%, and a 180° peel strength determined by a test for evaluating adhesiveness is equal to or greater than 0.20 N/mm. The adhesive sheet can inhibit the occurrence of malfunctioning of a capacitance-type touch panel in an environment of a wide temperature range from a low temperature to a high temperature, and can be included in a laminate for a touch panel and a capacitance-type touch panel.Type: ApplicationFiled: September 11, 2015Publication date: January 7, 2016Applicant: FUJIFILM CorporationInventors: Yasuhiro MITAMURA, Michihiro SHIBATA, Shinya OGIKUBO
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Publication number: 20160004356Abstract: A capacitance touch panel includes a display, a lower adhesive layer, a capacitance touch panel sensor, an upper adhesive layer, and a protective substrate, which are formed in this order. A temperature dependency of relative permittivity in the upper adhesive layer and a temperature dependency of relative permittivity in the lower adhesive layer as determined by a temperature dependency evaluation test are both up to 30%.Type: ApplicationFiled: September 11, 2015Publication date: January 7, 2016Applicant: FUJIFILM CORPORATIONInventors: Shinya OGIKUBO, Michihiro SHIBATA, Yasuhiro MITAMURA
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Publication number: 20150376466Abstract: An adhesive film includes an adhesive layer containing an adhesive; and a release film disposed on at least one surface of the adhesive layer, temperature dependence of a relative dielectric constant of the adhesive layer that is determined by a test for evaluating temperature dependence is equal to or less than 30%, and the adhesive contains an acryl-based adhesive. The adhesive film including the adhesive layer can inhibit the occurrence of malfunctioning of a capacitance-type touch panel in an environment of a wide temperature range from a low temperature to a high temperature.Type: ApplicationFiled: September 3, 2015Publication date: December 31, 2015Applicant: FUJIFILM CORPORATIONInventors: Yasuhiro MITAMURA, Michihiro SHIBATA, Shinya OGIKUBO
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Patent number: 9221980Abstract: A conductive paste which can form a silver layer and a printed wiring board having a silver layer formed of the conductive paste.Type: GrantFiled: March 19, 2015Date of Patent: December 29, 2015Assignee: FUJIFILM CorporationInventors: Yasuaki Matsushita, Yasuhiro Mitamura
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Publication number: 20150370379Abstract: A touch panel having an input region and an outside region positioned outside the input region includes at least: a substrate; detection electrodes disposed on the substrate corresponding to the input region; lead-out wirings which are disposed on the substrate corresponding to the outside region and are electrically connected to the detection electrodes; and a protective layer disposed on the substrate corresponding to the outside region so as to cover the lead-out wirings. The protective layer is formed by using an epoxy resin, and the lead-out wirings contain metal silver and gelatin. In the touch panel, the occurrence of ion migration between lead-out wirings is further inhibited.Type: ApplicationFiled: August 31, 2015Publication date: December 24, 2015Applicant: FUJIFILM CORPORATIONInventors: Toshiaki HAYASHI, Yuki MATSUNAMI, Yasuhiro MITAMURA
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Publication number: 20150355754Abstract: A capacitance touch panel of the invention includes a display, a lower adhesive layer, a capacitance touch panel sensor, an upper adhesive layer and a protective substrate, which are formed in this order. Relative permittivity A in the upper adhesive layer and relative permittivity B in the lower adhesive layer satisfy expression (1): [relative permittivity A?relative permittivity B . . . (1)] at respective temperatures set in increments of 20° C. from ?40° C. to 80° C., and a temperature dependency of the relative permittivity B in the lower adhesive layer as determined by a temperature dependency evaluation test is up to 30%.Type: ApplicationFiled: August 17, 2015Publication date: December 10, 2015Applicant: FUJIFILM CORPORATIONInventors: Shinya OGIKUBO, Michihiro SHIBATA, Yasuhiro MITAMURA
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Publication number: 20150191610Abstract: There are provided a conductive paste which can form a silver layer of excellent migration resistance and conductivity in a simple manner, and a printed wiring board having a silver layer formed of the conductive paste.Type: ApplicationFiled: March 19, 2015Publication date: July 9, 2015Applicant: FUJIFILM CORPORATIONInventors: Yasuaki MATSUSHITA, Yasuhiro MITAMURA
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Publication number: 20150014030Abstract: A composition for forming a silver ion diffusion-suppressing layer includes an insulating resin and a compound including: a structure selected from the group consisting of a triazole structure, a thiadiazole structure and a benzimidazole structure; a mercapto group; and at least one hydrocarbon group optionally containing a heteroatom, with the total number of carbon atoms in the hydrocarbon group or groups being 5 or more. The composition for forming a silver ion diffusion-suppressing layer allows formation of a silver ion diffusion-suppressing layer capable of suppressing silver ion migration between metal interconnects containing silver or a silver alloy to improve the reliability on the insulation between the metal interconnects.Type: ApplicationFiled: August 25, 2014Publication date: January 15, 2015Applicant: FUJIFILM CORPORATIONInventors: Yasuhiro MITAMURA, Masaya NAKAYAMA, Yuki MATSUNAMI
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Patent number: 7399569Abstract: A microcapsule produced by a method involving a primary dispersed particle and a secondary dispersed particle, the capsule formation occurring at the interface of the secondary dispersed particle. A microcapsule containing a diazonium salt represented by a specific formula. A recording material utilizing the microcapsule.Type: GrantFiled: February 18, 2005Date of Patent: July 15, 2008Assignee: FUJIFILM CorporationInventors: Mitsuyuki Tsurumi, Yasuhiro Mitamura
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Patent number: 7118844Abstract: A diazonium salt represented by the following general formula (1) and a thermal recording material using the diazonium salt: General Formula (1) wherein R1 and R2 each independently represents an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group or a carbamoyl group, and R1 and R2 may be linked each other to form a ring; and R3 to R6 each independently represents a hydrogen atom, a hydroxyl group, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group or a diazonio group, and at least one of R3, R4, R5 and R6 represents the diazonio group.Type: GrantFiled: September 3, 2003Date of Patent: October 10, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Akinori Fujita, Kimiatsu Nomura, Yoshihiro Jimbo, Hisato Nagase, Toshihide Aoshima, Yasuhiro Mitamura, Tatsuo Kawabuchi
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Publication number: 20060205594Abstract: A leuco color-developing layer contains a microcapsule containing an electron-donating colorless dye-precursor and a mixture of triglycerides, and the particle diameter of the microcapsule is 0.7 to 2.0 ?m.Type: ApplicationFiled: February 3, 2006Publication date: September 14, 2006Inventors: Yasuhiro Mitamura, Kimi Ikeda