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: 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
  • Patent number: 10375953
    Abstract: A synthetic polymer film (34A) 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. The synthetic polymer film (34A), (34B) includes a urethane resin and a silicone oil, and the silicone oil has a HLB value of not less than 14 and not more than 18.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: August 13, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takahiro Nakahara, Miho Yamada, Kiyoshi Minoura, Ken Atsumo
  • 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: 20190174752
    Abstract: A synthetic polymer film (34A) 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 nitrogen element included in the surface is not less than 0.7 at %.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 13, 2019
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Miho YAMADA, Kiyoshi MINOURA, Takahiro NAKAHARA, Ken ATSUMO
  • Patent number: 10251393
    Abstract: A synthetic polymer film includes a surface which has a plurality of raised portions. A two-dimensional size of the plurality of raised portions 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. The surface has a microbicidal effect. Further, a concentration of a nitrogen element included in the surface is not less than 0.7 at %.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: April 9, 2019
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Miho Yamada, Kiyoshi Minoura, Takahiro Nakahara, Ken Atsumo
  • 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
  • Publication number: 20180201001
    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: Application
    Filed: August 1, 2016
    Publication date: July 19, 2018
    Inventors: YASUHIRO SHIBAI, KEN ATSUMO, HIDEKAZU HAYASHI, NOBUAKI YAMADA
  • Publication number: 20180192645
    Abstract: A synthetic polymer film (34A) 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. The synthetic polymer film (34A), (34B) includes a urethane resin and a silicone oil, and the silicone oil has a HLB value of not less than 14 and not more than 18.
    Type: Application
    Filed: July 11, 2016
    Publication date: July 12, 2018
    Inventors: TAKAHIRO NAKAHARA, MIHO YAMADA, KIYOSHI MINOURA, KEN ATSUMO
  • Publication number: 20180194910
    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: Application
    Filed: June 20, 2016
    Publication date: July 12, 2018
    Inventors: TAKAHIRO NAKAHARA, MIHO YAMADA, KEN ATSUMO, KIYOSHI MINOURA
  • Publication number: 20180134859
    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 zeta potential at the surface is not more than -46.3 mV.
    Type: Application
    Filed: April 25, 2016
    Publication date: May 17, 2018
    Inventors: MIHO YAMADA, KIYOSHI MINOURA, TAKAHIRO NAKAHARA, KEN ATSUMO
  • Publication number: 20170258081
    Abstract: A synthetic polymer film includes a surface which has a plurality of raised portions. A two-dimensional size of the plurality of raised portions 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. The surface has a microbicidal effect. Further, a concentration of a nitrogen element included in the surface is not less than 0.7 at %.
    Type: Application
    Filed: November 10, 2015
    Publication date: September 14, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Miho YAMADA, Kiyoshi MINOURA, Takahiro NAKAHARA, Ken ATSUMO