Patents by Inventor Yasuhiro Shibai

Yasuhiro Shibai 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: 20200298539
    Abstract: A plastic product includes: a plastic base having a surface, the surface being made of a cycloolefin polymer; and a synthetic polymer film formed on the surface of the plastic base. The synthetic polymer film is formed from a photocurable resin containing an oxime ester-based photopolymerization initiator in an amount of not less than 0.1 mass % and not more than 5 mass % on the basis of the entire photocurable resin.
    Type: Application
    Filed: March 17, 2020
    Publication date: September 24, 2020
    Inventors: Yasuhiro SHIBAI, Yu YAMANE, Tokio TAGUCHI
  • Patent number: 10751707
    Abstract: The present disclosure provides a photocatalyst filter that can efficiently decompose and eliminate ozone gas or VOC and has a low ventilation resistance. The photocatalyst filter includes a sheet-like filter substrate and a photocatalyst layer supported by the filter substrate. The photocatalyst layer exhibits a photocatalytic action by receiving light having a wavelength of 400 nm or more. The photocatalyst filter has an aperture ratio of 35% or more and 80% or less.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Hiroshi Onda, Tomoya Tsutsumino
  • Patent number: 10752742
    Abstract: A decorative film includes: a substrate; and a polymer layer including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light. The substrate contains a polycarbonate at least in its surface close to the polymer layer. The polymer layer is a cured product of a polymerizable composition. The polymerizable composition contains a release agent, a polyfunctional acrylate containing one or both of an ethylene oxide group and a propylene oxide group, and 2-(2-vinyloxyethoxy)ethyl acrylate. The polymerizable composition contains, in terms of active components, given proportions of the release agent and the 2-(2-vinyloxyethoxy)ethyl acrylate. The polymerizable composition contains, in terms of active components, a given total amount of the ethylene oxide group and the propylene oxide group in the polyfunctional acrylate and the 2-(2-vinyloxyethoxy)ethyl acrylate.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Ken Atsumo, Tokio Taguchi
  • Publication number: 20200263055
    Abstract: The optical member of the present invention includes a substrate and a polymer layer that is in direct contact with the substrate and includes on a surface thereof an uneven structure provided with multiple projections at a pitch not longer than a wavelength of visible light, the polymer layer containing an amide group, the polymer layer having an amide group concentration of 2 mmol/g or higher and lower than 5 mmol/g, the polymer layer having a minimum storage modulus E? of 1×108 Pa or higher and 1×109 Pa or lower at a bottom temperature of 110° C. or higher and 210° C. or lower in a dynamic viscoelasticity measurement with a measurement temperature range of ?50° C. to 250° C., a temperature rise rate of 5° C./min, and a frequency of 10 Hz.
    Type: Application
    Filed: December 8, 2016
    Publication date: August 20, 2020
    Inventors: YASUHIRO SHIBAI, KEN ATSUMO, HIDEKAZU HAYASHI, NOBUAKI YAMADA
  • Publication number: 20200189249
    Abstract: A plastic product includes a plastic base which has a surface and a synthetic polymer film provided on the surface of the plastic base, the surface of the plastic base being made of polycarbonate. The synthetic polymer film has raised portions whose two-dimensional size is in a range of more than 20 nm and less than 500 nm when viewed in its normal direction. A crosslink structure of the synthetic polymer film contains an ethylene oxide unit and a 2-(2-vinyloxy ethoxy)ethyl (meth)acrylate monomer unit. The proportion of the contained ethylene oxide unit to the entirety of the synthetic polymer film is not less than 35 mass % and less than 70 mass %. The proportion of the contained 2-(2-vinyloxy ethoxy)ethyl (meth)acrylate monomer unit to the entirety of the synthetic polymer film is not less than 15 mass % and less than 45 mass %.
    Type: Application
    Filed: February 7, 2020
    Publication date: June 18, 2020
    Inventors: YASUHIRO SHIBAI, MIHO YAMADA, KEN ATSUMO, KIYOSHI MINOURA
  • Publication number: 20200165369
    Abstract: An antifouling film includes: a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light. The polymer layer is a cured product of a polymerizable composition. The polymerizable composition contains, in terms of active components, 75 to 95 wt % of a polymerizable monomer, 2.5 to 12.5 wt % of a urethane acrylate containing fluorine and an ester, and 2.5 to 9 wt % of a perfluoroalkyl-based monomer containing one (meth)acryloyl group for each molecule. The polymerizable monomer contains a bifunctional acrylate that contains an ethylene oxide group and a multifunctional acrylate that contains no ethylene oxide group. The perfluoroalkyl-based monomer has a fluorine atom concentration of 50 to 60 wt %. The polymerizable composition has an ethylene oxide group concentration of 20 to 50 wt %.
    Type: Application
    Filed: November 21, 2019
    Publication date: May 28, 2020
    Inventors: Yasuhiro SHIBAI, Tokio TAGUCHI, Kenichiro NAKAMATSU
  • Publication number: 20200071560
    Abstract: The An antifouling film includes: a substrate; and a polymer layer including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light. The polymer layer is a cured product of a polymerizable composition. The polymerizable composition contains, in terms of active components, 75 to 98 wt % of a polyfunctional acrylate, 0.5 to 10 wt % of a fluorine-based release agent, and 1 to 14 wt % of a monofunctional amide monomer. The polymer layer has a bottom temperature at which a storage modulus E? of the polymer layer is minimum of 90° C. to 150° C. and a minimum storage modulus E? of 0.9×108 to 4.5×108 Pa in a dynamic viscoelasticity measurement within a measurement temperature range of ?50° C. to 250° C. and at a temperature increasing rate of 5° C./min and a frequency of 10 Hz.
    Type: Application
    Filed: March 14, 2018
    Publication date: March 5, 2020
    Inventors: Yasuhiro SHIBAI, Ken ATSUMO, Kenichiro NAKAMATSU
  • Publication number: 20200002488
    Abstract: A decorative film includes: a substrate; and a polymer layer including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light. The substrate contains a polycarbonate at least in its surface close to the polymer layer. The polymer layer is a cured product of a polymerizable composition. The polymerizable composition contains a release agent, a polyfunctional acrylate containing one or both of an ethylene oxide group and a propylene oxide group, and 2-(2-vinyloxyethoxy)ethyl acrylate. The polymerizable composition contains, in terms of active components, given proportions of the release agent and the 2-(2-vinyloxyethoxy)ethyl acrylate. The polymerizable composition contains, in terms of active components, a given total amount of the ethylene oxide group and the propylene oxide group in the polyfunctional acrylate and the 2-(2-vinyloxyethoxy)ethyl acrylate.
    Type: Application
    Filed: October 13, 2017
    Publication date: January 2, 2020
    Inventors: Yasuhiro SHIBAI, Ken ATSUMO, Tokio TAGUCHI
  • Patent number: 10471692
    Abstract: The present invention provides an optical member with which degradation of adhesion between a substrate containing triacetylcellulose and a polymer layer caused by moisture absorption is suppressed. An optical member according to the present invention includes a substrate and a polymer layer in direct contact with the substrate and having an indented structure on a surface thereof, the indented structure including multiple protrusions formed at a pitch not greater than a wavelength of visible light. Triacetylcellulose is present in at least a surface of the substrate on the polymer layer side, the polymer layer is formed from a polymerizable composition polymerizable by active energy ray irradiation, and the polymerizable composition contains 30 parts by weight or more and 75 parts by weight or less of a polyfunctional acrylate, 25 parts by weight or more and 60 parts by weight or less of a monofunctional monomer having a tertiary amide group, and 0.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: November 12, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Ken Atsumo, Hidekazu Hayashi, Nobuaki Yamada
  • Publication number: 20190338149
    Abstract: The present invention provides an antifouling film that is excellent in antifouling properties, rubbing resistance, and adhesion. The antifouling film includes: a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light, the polymer layer being a cured product of a polymerizable composition, the polymerizable composition containing, in terms of active components, 30 to 80 wt % of a polyfunctional acrylate, 10 to 30 wt % of a monofunctional amide monomer, 0.5 to 10 wt % of a fluorine-based release agent, and 5 to 30 wt % of a vinyl-based polymer containing a repeat unit represented by a predetermined formula.
    Type: Application
    Filed: January 23, 2018
    Publication date: November 7, 2019
    Inventors: Yasuhiro SHIBAI, Ken ATSUMO, Kenichiro NAKAMATSU
  • Publication number: 20190329521
    Abstract: The present invention provides an antifouling film that is excellent in antifouling properties, adhesion, rubbing resistance, and reliability, and reduces fingerprint emergence at high humidity. The antifouling film includes a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light, the polymer layer being a cured product of a polymerizable composition, the polymerizable composition containing, in terms of active components, 20 to 90 wt % of a polyfunctional acrylate containing an ethylene oxide group, 5 to 25 wt % of a monofunctional amide monomer, and 0.5 to 10 wt % of a fluorine-based release agent, the polymerizable composition containing, in terms of active components, a total of 40 to 65 wt % of the ethylene oxide group in the polyfunctional acrylate and the monofunctional amide monomer.
    Type: Application
    Filed: January 11, 2018
    Publication date: October 31, 2019
    Inventors: Yasuhiro SHIBAI, Ken ATSUMO, Kenichiro NAKAMATSU
  • Publication number: 20190300666
    Abstract: The present invention provides a method for producing an antifouling film capable of long-term continuous production of an antifouling film having excellent antifouling properties. The method for producing an antifouling film of the present invention includes Process (1) of applying a resin to a surface of a substrate; Process (2) of applying a second release agent to a surface of a die coated with a first release agent; Process (3) of pushing the substrate to the surface of the die coated with the second release agent with the resin in between to form an uneven structure on a surface of the resin; and Process (4) of curing the resin including the uneven structure on the surface thereof to form a polymer layer. The resin contains an antifouling agent that contains a predetermined compound. The first release agent contains a predetermined compound. The second release agent contains a predetermined compound.
    Type: Application
    Filed: July 3, 2017
    Publication date: October 3, 2019
    Inventors: Hidekazu HAYASHI, Tokio TAGUCHI, Kenichiro NAKAMATSU, Yasuhiro SHIBAI, Ken ATSUMO, Tsuneo YAMASHITA, Eiji SAKAMOTO, Saya NII, Takayuki ARAKI
  • Publication number: 20190284355
    Abstract: A synthetic polymer film has a surface which has a plurality of raised or recessed portions, wherein the synthetic polymer film has a cross-linked structure, and the synthetic polymer film contains an antimicrobial additive which is permitted by law for addition to food and which has an antimicrobial effect.
    Type: Application
    Filed: March 14, 2019
    Publication date: September 19, 2019
    Inventors: Yasuhiro SHIBAI, Miho YAMADA
  • Patent number: 10414108
    Abstract: A method for producing an optical film includes: (1) applying a lower layer resin and an upper layer resin; (2) forming a resin layer having the uneven structure on a surface thereof by pressing a mold against the lower layer resin and the upper layer resin from the upper layer resin side in the state where the applied lower layer resin and upper layer resin are stacked; and (3) curing the resin layer, the lower layer resin containing at least one kind of first monomer that contains no fluorine atoms, the upper layer resin containing a fluorine-containing monomer and at least one kind of second monomer that contains no fluorine atoms, at least one of the first monomer and the second monomer containing a compatible monomer that is compatible with the fluorine-containing monomer and being dissolved in the lower layer resin and the upper layer resin.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: September 17, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hidekazu Hayashi, Tokio Taguchi, Nobuaki Yamada, Yasuhiro Shibai, Atsushi Niinoh, Kenichiro Nakamatsu
  • Publication number: 20190276577
    Abstract: A synthetic polymer film has a surface which has a plurality of raised portions, wherein when viewed in a normal direction of the synthetic polymer film, a two-dimensional size of the plurality of raised portions is in the range of more than 20 nm and less than 500 nm, the synthetic polymer film is made of a curable resin which contains a first polymerizable fluoric compound, the first polymerizable fluoric compound containing a fluorine element, the first polymerizable fluoric compound has a plurality of polymerizable functional groups and has a molecular weight of not less than 1000 and not more than 5000, and at the lapse of 5 minutes since placing a 200 ?L drop of water on the surface of the synthetic polymer film, a pH of an aqueous solution is not less than 6.5 and not more than 7.5.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Inventors: Yasuhiro SHIBAI, Ken ATSUMO, Tokio TAGUCHI, Miho YAMADA
  • Publication number: 20190255759
    Abstract: A synthetic polymer film whose surface has a plurality of raised or recessed portions, wherein a two-dimensional size of the plurality of raised or recessed portions is in a range of not less than 0.5 ?m and not more than 3 ?m when viewed in a normal direction of the synthetic polymer film, the synthetic polymer film has a crosslink structure and contains an organic carboxylic acid, at the lapse of 5 minutes since placing a 200 ?L drop of water on the surface of the synthetic polymer film, a pH of an aqueous solution is less than 4, and an area equivalent circle diameter of the aqueous solution is not less than 20 mm, and at the lapse of 60 seconds since placing a drop of water on the surface of the synthetic polymer film, a static contact angle of the water drop with respect to the surface is less than 3°.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 22, 2019
    Inventors: MIHO YAMADA, YASUHIRO SHIBAI, KIYOSHI MINOURA, TOKIO TAGUCHI
  • Publication number: 20190233656
    Abstract: The present invention provides a method for producing an antifouling film having excellent antifouling properties and rubbing resistance. The method for producing an antifouling film of the present invention includes Process (1) of applying a resin to a surface of a substrate; Process (2) of pushing the substrate to a die with the resin in between to form an uneven structure on a surface of the resin; and Process (3) of curing the resin including the uneven structure on the surface thereof to form a polymer layer. The resin contains an antifouling agent that contains a compound containing a perfluoro(poly)ether group. The die includes a surface having undergone release treatment using a release agent containing a compound that contains a perfluoro(poly)ether group, a hydrolyzable group, and a Si atom.
    Type: Application
    Filed: July 3, 2017
    Publication date: August 1, 2019
    Inventors: Hidekazu HAYASHI, Tokio TAGUCHI, Kenichiro NAKAMATSU, Yasuhiro SHIBAI, Ken ATSUMO, Tsuneo YAMASHITA, Saya NII, Eiji SAKAMOTO, Kakeru HANABUSA, Hisashi MITSUHASHI, Takayuki ARAKI
  • Publication number: 20190092883
    Abstract: A synthetic polymer film is a synthetic polymer film whose surface has a plurality of raised or recessed portions. The synthetic polymer film has a crosslink structure, and the crosslink structure does not contain any nitrogen element that is a constituent of a urethane bond. The synthetic polymer film contains an organic carboxylic acid, and an amount of water required for dissolving 1 g of the organic carboxylic acid is equal to or greater than 10 mL and less than 10000 mL. At the lapse of 5 minutes since placing a 200 ?L drop of water on the surface of the synthetic polymer film, a pH of an aqueous solution is not more than 5, and an area equivalent circle diameter of the aqueous solution is not less than 20 mm. A synthetic polymer film whose surface has a microbicidal activity can be produced using a photocurable resin composition which contains an organic carboxylic acid or a photoacid generator which generates the organic carboxylic acid.
    Type: Application
    Filed: September 25, 2018
    Publication date: March 28, 2019
    Inventors: YASUHIRO SHIBAI, MIHO YAMADA, KEN ATSUMO, KIYOSHI MINOURA
  • Publication number: 20190077130
    Abstract: A plastic product includes a plastic base which has a surface and a synthetic polymer film provided on the surface of the plastic base, the surface of the plastic base being made of polycarbonate. The synthetic polymer film has raised portions whose two-dimensional size is in a range of more than 20 nm and less than 500 nm when viewed in its normal direction. A crosslink structure of the synthetic polymer film contains an ethylene oxide unit and a 2-(2-vinyloxy ethoxy)ethyl (meth)acrylate monomer unit. The proportion of the contained ethylene oxide unit to the entirety of the synthetic polymer film is not less than 35 mass % and less than 70 mass %. The proportion of the contained 2-(2-vinyloxy ethoxy)ethyl (meth)acrylate monomer unit to the entirety of the synthetic polymer film is not less than 15 mass % and less than 45 mass %.
    Type: Application
    Filed: September 14, 2018
    Publication date: March 14, 2019
    Inventors: YASUHIRO SHIBAI, MIHO YAMADA, KEN ATSUMO, KIYOSHI MINOURA
  • Publication number: 20190041549
    Abstract: The method for producing an optical member of the present invention includes: a step (1) of applying a lower layer resin and an upper layer resin; a step (2) of pressing a die against the lower layer resin and the upper layer resin from the upper layer resin side, so as to form a resin layer including an uneven structure on a surface thereof; and a step (3) of curing the resin layer to form the polymer layer, wherein the lower layer resin contains an amide group, the lower layer resin has an amide group concentration of 1.5 mmol/g or more and less than 5 mmol/g, and the polymer layer has a minimum storage modulus E? of 1×108 Pa or higher and 1×109 Pa or lower at a bottom temperature of 110° C. or higher and 210° C. or lower.
    Type: Application
    Filed: February 15, 2017
    Publication date: February 7, 2019
    Inventors: YASUHIRO SHIBAI, KEN ATSUMO, HIDEKAZU HAYASHI