Patents by Inventor Masatoshi Ohkura
Masatoshi Ohkura 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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Publication number: 20230108407Abstract: There is provided a polypropylene film that has excellent reliability and withstand voltage characteristics in high temperature environments when used in high voltage capacitors, that has a structure with excellent stability against heat and is suitable for applications in capacitors or the like to be used at high temperatures and high voltages, and that has excellent processability and does not wrinkle during a conveyance process including a vapor deposition process. The polypropylene film has an absolute value of a difference between a crystallite size obtained by scanning an a crystal (110) plane by wide angle X-ray diffraction in a main alignment direction and a crystallite size obtained by scanning an a crystal plane in a direction orthogonal to the main alignment direction is 3.0 nm or less, and a shrinkage stress in a machine direction (SF 135 MD) is 2.0 MPa or less at 135° C. in a heating process at a temperature elevation rate of 10° C./min in thermomechanical analysis (TMA).Type: ApplicationFiled: February 18, 2021Publication date: April 6, 2023Applicant: Toray Industries, Inc.Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Kohei Yamanaka
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Publication number: 20230080437Abstract: A polypropylene film in which: during a heating process in thermomechanical analysis (TMA), the relationship (Ts?Tf)?40° C. is satisfied by the temperature (Ts) (° C.) at which the film contracts by 0.1% in the longitudinal direction and the temperature (Tf) (° C.) at which the longitudinal shrink stress reaches 0.01 MPa; and the skewness (Ssk), which is the degree of bias of the protrusion shape, of at least one surface of the film is greater than ?30 and less than 5. Thus provided is a polypropylene film that has excellent reliability and withstand voltage characteristics in high temperature environments when used in high voltage capacitors, that has a structure with excellent stability against heat and is suitable for applications in capacitors or the like to be used at high temperatures and high voltages, and that has excellent processability and does not wrinkle during a conveyance process including a vapor deposition process.Type: ApplicationFiled: February 18, 2021Publication date: March 16, 2023Applicant: Toray Industries, Inc.Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
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Publication number: 20230079561Abstract: The present invention addresses the problem of providing a film for a film capacitor that has high heat resistance, self-healing properties, and excellent productivity, wherein the film has a resin layer A having a melting point of 180° C. or higher and/or a glass transition temperature of 130° C. or higher and a layer B thinner than the resin layer A in at least the outermost layer of the film, the oxygen content of the layer B is 1.0% by mass or more, when a dynamic friction coefficient is measured on the same surface of two outermost layer surfaces, the surface having a higher dynamic friction coefficient is defined as an a-plane and the surface having a smaller dynamic friction coefficient is defined as a b-plane, and when a dynamic friction coefficient between the a-planes is defined as ?daa, and a dynamic friction coefficient between the a-plane and the b-plane is defined as ?dab, ?daa>?dab and ?dab?1.2 are satisfied.Type: ApplicationFiled: March 25, 2021Publication date: March 16, 2023Applicant: Toray Industries, Inc.Inventors: Toshiumi Tatsuki, Masatoshi Ohkura
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Patent number: 11440292Abstract: A polypropylene film exhibits a high breakdown voltage even in a high temperature environment and can exhibit a voltage resistance and reliability even in a high temperature environment when used as a capacitor, and a metal layer laminated film and a film capacitor using the polypropylene film. For the polypropylene film, at least one surface of the film has an elastic modulus of 2.6 GPa or more, measured by nanoindentation measurement, and the sum of heat shrinkage rates is in the film longitudinal and width directions 5% or less in a heat treatment at 130° C. for ten minutes.Type: GrantFiled: August 27, 2018Date of Patent: September 13, 2022Assignee: Toray Industries, Inc.Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
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Patent number: 11383543Abstract: Provided are a method for producing a printed matter and a printing machine which suppress the decrease of transferability and improve adhesiveness between ink and a film substrate when ink is printed on the film substrate. The method for producing a printed matter of the present invention is a method for producing a printed matter by printing ink on a film, which uses a film having a nitrogen element concentration of 0.5 to 10.0 atom % in the film surface, and includes irradiating with an active energy ray after printing.Type: GrantFiled: February 28, 2018Date of Patent: July 12, 2022Assignee: TORAY INDUSTRIES, INC.Inventors: Hironobu Sadakuni, Masatoshi Ohkura, Takejiro Inoue
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Patent number: 11358374Abstract: A laminated film exhibits a certain adhesive property to various adherends having shapes or different irregularity shapes. The laminated film includes a resin layer A on one surface of a substrate and a resin layer B on the other surface. The resin layer A has a ten-point average surface roughness Rz(a) of 1.5 ?m or more and 5.0 ?m or less and a storage elastic modulus G? at 25° C. and 1 Hz of 3.0×105 Pa or more.Type: GrantFiled: October 29, 2018Date of Patent: June 14, 2022Assignee: Toray Advanced Film Co., Ltd.Inventors: Yusuke Baba, Tetsuya Machida, Norihide Inoue, Naoya Nishimura, Masatoshi Ohkura, Toshiumi Tatsuki
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Publication number: 20220135780Abstract: Provided are a polypropylene film that has excellent structural stability relative to heat, is suitable for use in high-voltage capacitors or the like, and, when used in a high-voltage capacitor, has excellent long-term reliability in high-temperature environments; a metal layer laminated film that uses the polypropylene film; and a film capacitor. The polypropylene film has the sum of F5 values for the longitudinal direction and the width direction at 130° C. of at least 15 MPa and, for dielectric breakdown testing at 130° C., a dielectric breakdown voltage (B150) (V/?m) after heat treating for 1 minute at 150° C. and a dielectric breakdown voltage (B0) (V/?m) without heat treating satisfy the following relationship. (B150)/(B0)?0.Type: ApplicationFiled: February 20, 2020Publication date: May 5, 2022Applicant: Toray Industries, Inc.Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
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Publication number: 20210380769Abstract: A polypropylene film has an excellent long-term operating reliability in a high temperature environment when used in a high-voltage capacitor, which is suitable for use in such capacitor applications and the like, and which has an excellent structural stability to heat; and a metal film-laminated film and a film capacitor including the same. The polypropylene film, wherein the relationship between the sum (E?135 (MD+TD)) of the storage moduli in the machine direction and the transverse direction of the film, as determined by solid viscoelasticity measurement at 135° C., and the sum (E?125(MD+TD)) of the storage moduli, as determined by solid viscoelasticity measurement at 125° C., satisfies formula (1): E?135(MD+TD)/E?125(MD+TD)>0.7??(1).Type: ApplicationFiled: August 20, 2019Publication date: December 9, 2021Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
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Publication number: 20210197535Abstract: A laminated film exhibits a certain adhesive property to various adherends having shapes or different irregularity shapes. The laminated film includes a resin layer A on one surface of a substrate and a resin layer B on the other surface. The resin layer A has a ten-point average surface roughness Rz(a) of 1.5 ?m or more and 5.0 ?m or less and a storage elastic modulus G? at 25° C. and 1 Hz of 3.0×105 Pa or more.Type: ApplicationFiled: October 29, 2018Publication date: July 1, 2021Inventors: Yusuke Baba, Tetsuya Machida, Norihide Inoue, Naoya Nishimura, Masatoshi Ohkura, Toshiumi Tatsuki
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Publication number: 20200198298Abstract: A polypropylene film exhibits a high breakdown voltage even in a high temperature environment and can exhibit a voltage resistance and reliability even in a high temperature environment when used as a capacitor, and a metal layer laminated film and a film capacitor using the polypropylene film. For the polypropylene film, at least one surface of the film has an elastic modulus of 2.6 GPa or more, measured by nanoindentation measurement, and the sum of heat shrinkage rates is in the film longitudinal and width directions 5% or less in a heat treatment at 130° C. for ten minutes.Type: ApplicationFiled: August 27, 2018Publication date: June 25, 2020Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
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Publication number: 20200009858Abstract: Provided are a method for producing a printed matter and a printing machine which suppress the decrease of transferability and improve adhesiveness between ink and a film substrate when ink is printed on the film substrate. The method for producing a printed matter of the present invention is a method for producing a printed matter by printing ink on a film, which uses a film having a nitrogen element concentration of 0.5 to 10.0 atom % in the film surface, and includes irradiating with an active energy ray after printing.Type: ApplicationFiled: February 28, 2018Publication date: January 9, 2020Applicant: TORAY INDUSTRIES, INC.Inventors: Hironobu SADAKUNI, Masatoshi OHKURA, Takejiro INOUE
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Patent number: 10513098Abstract: A protective film is capable of protecting and preserving an optical sheet surface, particularly the back surface of a prism sheet, independent of the shape and composition thereof in a range of adhesive forces appropriate for various adherends. A layered film having an adhesive layer having a styrene-based elastomer as the main component thereof on at least one surface of a base material layer, the layered film characterized in that the loss tangent tan ? and the shear storage modulus G? of the elastomer at 1 Hz in a temperature range of 30-60° C. are within specific ranges.Type: GrantFiled: February 27, 2017Date of Patent: December 24, 2019Assignee: Toray Advanced Film Co., Ltd.Inventors: Tetsuya Machida, Natsuki Nakamichi, Norihide Inoue, Naoko Tamura, Ryosuke Matsui, Masatoshi Ohkura
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Publication number: 20190070833Abstract: A protective film is capable of protecting and preserving an optical sheet surface, particularly the back surface of a prism sheet, independent of the shape and composition thereof in a range of adhesive forces appropriate for various adherends. A layered film having an adhesive layer having a styrene-based elastomer as the main component thereof on at least one surface of a base material layer, the layered film characterized in that the loss tangent tan ? and the shear storage modulus G? of the elastomer at 1 Hz in a temperature range of 30-60° C. are within specific ranges.Type: ApplicationFiled: February 27, 2017Publication date: March 7, 2019Inventors: Tetsuya Machida, Natsuki Nakamichi, Norihide Inoue, Naoko Tamura, Ryosuke Matsui, Masatoshi Ohkura
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Publication number: 20170157803Abstract: A polypropylene film includes a surface layer (I) with polypropylene as a main component at least on one face of a base layer. Surface free energy of the surface layer (I) is 15 mN/m or more and less than 28 mN/m. A mold release film includes a polypropylene film including a surface layer (I) with polypropylene as a main component at least on one face of a base layer, wherein surface free energy of the surface layer (I) is 15 mN/m or more and less than 28 mN/M.Type: ApplicationFiled: July 6, 2015Publication date: June 8, 2017Inventors: Takuya Kuma, Kazuma Okada, Yasuyuki Imanishi, Masatoshi Ohkura
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Publication number: 20160318281Abstract: A porous film is excellent in barrier properties such as blood barrier property and viral barrier property, puncture strength, and moisture permeability. A waterproof and moisture-permeable material that uses the porous film, and reduces the stuffy feeling that a person feels when wearing it and is excellent in the wearing comfortableness. The porous film has a degree of moisture permeability greater than or equal to 150 g/m2·h, a puncture strength is greater than or equal to 100 N/mm, and a blood barrier property is class 4 or higher.Type: ApplicationFiled: December 1, 2014Publication date: November 3, 2016Inventors: Kei Ikoma, Takuya Kuma, Masatoshi Ohkura, Shusaku Narita, Masanobu Takeda, Kazuya Matsumura
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Patent number: 9287543Abstract: A porous film that excels when used as a separator for a lithium-ion battery not only in separator followability to expansion and contraction of an electrode during charging and discharging, but also in charging and discharging cycle characteristics. The porous film, when the thickness of a circular region having a diameter of 10 mm as an initial thickness t0 after a load of 50 g is applied onto the circular region for 10 seconds, as a thickness t after a load of 500 g is subsequently applied onto the same region for 10 seconds, and as a thickness t1 after 10 seconds has passed after the load applied onto the same region is subsequently changed to 50 g, the thickness change rate is 10% to 50%, and the thickness (t1) recovery rate is 80% to 99.9%.Type: GrantFiled: February 2, 2012Date of Patent: March 15, 2016Assignee: Toray Industries, Inc.Inventors: Soichi Fujimoto, Takuya Kuma, Masatoshi Ohkura
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Patent number: 8742061Abstract: It is aimed to provide a polyarylene sulfide film for an acoustic instrument vibrating plate excellent in heat resistance, molding processability, acoustic properties, and also heat moldability. Provided is a polyarylene sulfide film wherein the elongation at break in either a longitudinal direction or a width direction of the film is 100% or more and 250% or less, and the Young's modulus in either a longitudinal direction or a width direction of the film is 1.5 GPa or more and less than 4 GPa.Type: GrantFiled: December 19, 2012Date of Patent: June 3, 2014Assignee: Toray Industries, Inc.Inventors: Tetsuya Machida, Yasuyuki Imanishi, Masatoshi Ohkura, Takuji Higashioji
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Publication number: 20130316246Abstract: A porous film that excels when used as a separator for a lithium-ion battery not only in separator followability to expansion and contraction of an electrode during charging and discharging, but also in charging and discharging cycle characteristics. The porous film, when the thickness of a circular region having a diameter of 10 mm as an initial thickness t0 after a load of 50 g is applied onto the circular region for 10 seconds, as a thickness t after a load of 500 g is subsequently applied onto the same region for 10 seconds, and as a thickness t1 after 10 seconds has passed after the load applied onto the same region is subsequently changed to 50 g, the thickness change rate is 10% to 50%, and the thickness (t1) recovery rate is 80% to 99.9%.Type: ApplicationFiled: February 2, 2012Publication date: November 28, 2013Applicant: Toray Industries, Inc.Inventors: Soichi Fujimoto, Takuya Kuma, Masatoshi Ohkura
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Publication number: 20130316247Abstract: A porous polypropylene film includes a polypropylene resin and a ?-crystal nucleating agent, in which a temperature at which a heat shrinkage rate of a dimension in the width direction of the film is 5% is 130 to 200° C., air permeation resistance is 50 to 500 sec/100 ml, porosity is 35 to 70%, and when porosity is ? and air permeation resistance is G, both satisfy expression (1): G+15×??1,200 ??(1).Type: ApplicationFiled: February 2, 2012Publication date: November 28, 2013Applicant: Toray Industries, Inc.Inventors: Takuya Kuma, Soichi Fujimoto, Masatoshi Ohkura
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Publication number: 20130310503Abstract: It is aimed to provide a polyarylene sulfide film for an acoustic instrument vibrating plate excellent in heat resistance, molding processability, acoustic properties, and also heat moldability. Provided is a polyarylene sulfide film wherein the elongation at break in either a longitudinal direction or a width direction of the film is 100% or more and 250% or less, and the Young's modulus in either a longitudinal direction or a width direction of the film is 1.5 GPa or more and less than 4 GPa.Type: ApplicationFiled: December 19, 2012Publication date: November 21, 2013Applicant: TORAY INDUSTRIES, INC.Inventors: Tetsuya MACHIDA, Yasuyuki IMANISHI, Masatoshi OHKURA, Takuji HIGASHIOJI