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).

  • Publication number: 20240123717
    Abstract: This polypropylene film has a polypropylene-based resin as a main component, and is configured such that the value (strength X) obtained by multiplying the film thickness by the F5 value in a direction perpendicular to the principal orientation axis is 400 N/m or more and 2000 N/m or less. As measured by thermomechanical analysis (TMA), when: the thermal shrinkage (%) at 100° C. in a direction perpendicular to the principal orientation axis is SMD, 100° C.; the thermal shrinkage at 130° C. in a direction perpendicular to the principal orientation axis is SMD, 130° C.; the thermal shrinkage at 100° C. in the principal orientation axis direction is STD, 100° C.; and the thermal shrinkage at 130° C. in the principal orientation axis direction is STD, 130° C., the propropylene film satisfies |SMD, 100° C.?SMD, 130° C.|?2.00 and |STD, 100° C.?STD, 130° C.|?2.50.
    Type: Application
    Filed: March 28, 2022
    Publication date: April 18, 2024
    Applicant: Toray Industries, Inc.
    Inventors: Haruki Aono, Yasuyuki Imanishi, Masatoshi Ohkura
  • Publication number: 20230415463
    Abstract: The present invention addresses the problem of providing a polypropylene film which is structurally stable to heat in deposition when used for packaging, and has appropriate slipperiness without using an anti-blocking agent or particles, and thus has excellent water vapor barrier properties and oxygen barrier properties, in particular, when a transparent deposited layer is laminated. Moreover, the present invention provides a polypropylene film characterized by having at least two types of layers (A layer and B layer) containing a polypropylene-based resin as a main component, wherein the B layer contains a thermoplastic resin incompatible with a polypropylene-based resin, and when the skewnesses Ssk of the A layer and the B layer, as measured through three-dimensional noncontact surface shape measurement, are Ssk (A) and Ssk (B), respectively, the Ssk (B) is at least 5 and the Ssk (A) is less than 5.
    Type: Application
    Filed: December 20, 2021
    Publication date: December 28, 2023
    Applicant: Toray Industries, Inc.
    Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Haruki Aono
  • Patent number: 11795282
    Abstract: 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: Grant
    Filed: August 20, 2019
    Date of Patent: October 24, 2023
    Assignee: Toray Industries, Inc.
    Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
  • Publication number: 20230108407
    Abstract: 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: Application
    Filed: February 18, 2021
    Publication date: April 6, 2023
    Applicant: Toray Industries, Inc.
    Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Kohei Yamanaka
  • Publication number: 20230080437
    Abstract: 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: Application
    Filed: February 18, 2021
    Publication date: March 16, 2023
    Applicant: Toray Industries, Inc.
    Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
  • Publication number: 20230079561
    Abstract: 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: Application
    Filed: March 25, 2021
    Publication date: March 16, 2023
    Applicant: Toray Industries, Inc.
    Inventors: Toshiumi Tatsuki, Masatoshi Ohkura
  • Patent number: 11440292
    Abstract: 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: Grant
    Filed: August 27, 2018
    Date of Patent: September 13, 2022
    Assignee: Toray Industries, Inc.
    Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
  • Patent number: 11383543
    Abstract: 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: Grant
    Filed: February 28, 2018
    Date of Patent: July 12, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Hironobu Sadakuni, Masatoshi Ohkura, Takejiro Inoue
  • Patent number: 11358374
    Abstract: 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: Grant
    Filed: October 29, 2018
    Date of Patent: June 14, 2022
    Assignee: Toray Advanced Film Co., Ltd.
    Inventors: Yusuke Baba, Tetsuya Machida, Norihide Inoue, Naoya Nishimura, Masatoshi Ohkura, Toshiumi Tatsuki
  • Publication number: 20220135780
    Abstract: 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: Application
    Filed: February 20, 2020
    Publication date: May 5, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
  • Publication number: 20210380769
    Abstract: 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: Application
    Filed: August 20, 2019
    Publication date: December 9, 2021
    Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
  • Publication number: 20210197535
    Abstract: 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: Application
    Filed: October 29, 2018
    Publication date: July 1, 2021
    Inventors: Yusuke Baba, Tetsuya Machida, Norihide Inoue, Naoya Nishimura, Masatoshi Ohkura, Toshiumi Tatsuki
  • Publication number: 20200198298
    Abstract: 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: Application
    Filed: August 27, 2018
    Publication date: June 25, 2020
    Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
  • Publication number: 20200009858
    Abstract: 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: Application
    Filed: February 28, 2018
    Publication date: January 9, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hironobu SADAKUNI, Masatoshi OHKURA, Takejiro INOUE
  • Patent number: 10513098
    Abstract: 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: Grant
    Filed: February 27, 2017
    Date of Patent: December 24, 2019
    Assignee: Toray Advanced Film Co., Ltd.
    Inventors: Tetsuya Machida, Natsuki Nakamichi, Norihide Inoue, Naoko Tamura, Ryosuke Matsui, Masatoshi Ohkura
  • Publication number: 20190070833
    Abstract: 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: Application
    Filed: February 27, 2017
    Publication date: March 7, 2019
    Inventors: Tetsuya Machida, Natsuki Nakamichi, Norihide Inoue, Naoko Tamura, Ryosuke Matsui, Masatoshi Ohkura
  • Publication number: 20170157803
    Abstract: 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: Application
    Filed: July 6, 2015
    Publication date: June 8, 2017
    Inventors: Takuya Kuma, Kazuma Okada, Yasuyuki Imanishi, Masatoshi Ohkura
  • Publication number: 20160318281
    Abstract: 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: Application
    Filed: December 1, 2014
    Publication date: November 3, 2016
    Inventors: Kei Ikoma, Takuya Kuma, Masatoshi Ohkura, Shusaku Narita, Masanobu Takeda, Kazuya Matsumura
  • Patent number: 9287543
    Abstract: 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: Grant
    Filed: February 2, 2012
    Date of Patent: March 15, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Soichi Fujimoto, Takuya Kuma, Masatoshi Ohkura
  • Patent number: 8742061
    Abstract: 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: Grant
    Filed: December 19, 2012
    Date of Patent: June 3, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Tetsuya Machida, Yasuyuki Imanishi, Masatoshi Ohkura, Takuji Higashioji