Patents by Inventor Ken ATSUMO

Ken ATSUMO 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: 20230109529
    Abstract: A polymerizable composition containing: (A) a compound having an alkylene oxide group and a (meth)acrylic group, with an alkylene oxide equivalent of less than 100 and a (meth)acrylic equivalent of less than 200, and having 2 or more identical polymerizable groups; (B) a compound having a molecular weight of 140 to 350, having no alkylene oxide group but having a (meth)acrylic group, with a (meth)acrylic equivalent of 137 or less, and having 2 or more carbon-carbon double bonds; (C) a compound having a fluoro(poly)ether group and having 1 or more carbon-carbon double bonds; and (D) a polymerization initiator, wherein a content of (A) is 1.8% to 98% by mass, a content of (B) is 1.8% to 98% by mass, a content of (C) is 0.1% to 10% by mass, and a content of (D) is 0.1% to 10% by mass, based on a total mass of the polymerizable composition.
    Type: Application
    Filed: November 21, 2022
    Publication date: April 6, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Ken ATSUMO, Kouji Kubota
  • Patent number: 11142653
    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: Grant
    Filed: July 3, 2017
    Date of Patent: October 12, 2021
    Assignees: SHARP KABUSHIKI KAISHA, DAIKIN INDUSTRIES, LTD.
    Inventors: Hidekazu Hayashi, Tokio Taguchi, Kenichiro Nakamatsu, Yasuhiro Shibai, Ken Atsumo, Tsuneo Yamashita, Saya Nii, Eiji Sakamoto, Kakeru Hanabusa, Hisashi Mitsuhashi, Takayuki Araki
  • Patent number: 11142617
    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: Grant
    Filed: July 3, 2017
    Date of Patent: October 12, 2021
    Assignees: SHARP KABUSHIKI KAISHA, DAIKIN INDUSTRIES, LTD.
    Inventors: Hidekazu Hayashi, Tokio Taguchi, Kenichiro Nakamatsu, Yasuhiro Shibai, Ken Atsumo, Tsuneo Yamashita, Eiji Sakamoto, Saya Nii, Takayuki Araki
  • Patent number: 10996377
    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: Grant
    Filed: February 15, 2017
    Date of Patent: May 4, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Ken Atsumo, Hidekazu Hayashi
  • Patent number: 10976475
    Abstract: 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 multiple 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 containing, in terms of active constituents, 15 to 40 wt % of an urethane acrylate containing six or more functional groups, 35 to 60 wt % of a multifunctional acrylate containing four or more functional groups and 3 to 15 ethylene oxide groups for each functional group, 15 to 30 wt % of a monofunctional acrylate with no ethylene oxide group, 0.5 to 10 wt % of a fluorine release agent containing a perfluoropolyether group and having a fluorine atom concentration of 50 wt % or lower, and 0.5 to 5 wt % of a polymerization initiator.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 13, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Ken Atsumo, Kenichiro Nakamatsu
  • Patent number: 10968292
    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: Grant
    Filed: September 25, 2018
    Date of Patent: April 6, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Miho Yamada, Ken Atsumo, Kiyoshi Minoura
  • Publication number: 20210096282
    Abstract: 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 multiple 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 containing, in terms of active constituents, 15 to 40 wt % of an urethane acrylate containing six or more functional groups, 35 to 60 wt % of a multifunctional acrylate containing four or more functional groups and 3 to 15 ethylene oxide groups for each functional group, 15 to 30 wt % of a monofunctional acrylate with no ethylene oxide group, 0.5 to 10 wt % of a fluorine release agent containing a perfluoropolyether group and having a fluorine atom concentration of 50 wt % or lower, and 0.5 to 5 wt % of a polymerization initiator.
    Type: Application
    Filed: June 28, 2017
    Publication date: April 1, 2021
    Inventors: YASUHIRO SHIBAI, KEN ATSUMO, KENICHIRO NAKAMATSU
  • Patent number: 10947411
    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: Grant
    Filed: December 8, 2016
    Date of Patent: March 16, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Ken Atsumo, Hidekazu Hayashi, Nobuaki Yamada
  • Patent number: 10926510
    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: Grant
    Filed: January 11, 2018
    Date of Patent: February 23, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Ken Atsumo, Kenichiro Nakamatsu
  • Patent number: 10913862
    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: Grant
    Filed: January 23, 2018
    Date of Patent: February 9, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Shibai, Ken Atsumo, Kenichiro Nakamatsu
  • Patent number: 10907019
    Abstract: A synthetic polymer film (34A), (34B) having a surface which has a plurality of raised portions (34Ap), (34Bp), wherein a two-dimensional size of the plurality of raised portions (34Ap), (34Bp) is in a range of more than 20 nm and less than 500 nm when viewed in a normal direction of the synthetic polymer film (34A), (34B), the surface having a microbicidal effect, and a concentration of a total of a nitrogen element which is a constituent of a primary amine and a nitrogen element which is a constituent of a secondary amine is not less than 0.29 at %, and a number of moles of an ethylene oxide unit included in one gram is more than 0.0020 and not more than 0.0080.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: February 2, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takahiro Nakahara, Miho Yamada, Ken Atsumo, Kiyoshi Minoura
  • 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: 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