Patents by Inventor Mizuki Hasumi

Mizuki Hasumi 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: 20210139743
    Abstract: An adhesive tape has superior mechanical properties, and can suppress occurrence of cracks after being exposed to high temperature conditions for a long period of time. The adhesive tape includes a substrate and an adhesive layer formed on one side of the substrate; wherein the substrate is made of a resin composition including 40 to 65 parts by mass of high boiling point plasticizer and 5 to 15 parts by mass of antimony trioxide with respect to 100 parts by mass of polyvinyl chloride resin.
    Type: Application
    Filed: May 25, 2018
    Publication date: May 13, 2021
    Applicant: Denka Company Limited
    Inventors: Syota Sawamura, Mizuki Hasumi
  • Publication number: 20200299549
    Abstract: An adhesive sheet capable of bonding adhesive layers together at normal temperatures, with little stickiness of the adhesive layers due to a plasticizer seeping out from a substrate providing a protective material using the adhesive sheet and a wire harness. An adhesive sheet including: a substrate containing 20-100 parts by mass of a polyester-based plasticizer to 100 parts by mass of a vinyl halide-based resin; a primer layer; adhesive layers included amount of a tackifier is 0-250 parts by mass and the inorganic microparticles is 0-250 parts by mass to 100 parts by mass of an elastomer, and a total value of the included amounts of the tackifier and the inorganic microparticles is 0-350 parts by mass; wherein the adhesive layers probe tack of 7 N/cm2 or less with ASTM D 2979, and the adhesive force between the adhesive layers width of 15 mm is 1.5 N or more.
    Type: Application
    Filed: August 23, 2018
    Publication date: September 24, 2020
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yuto HONDA, Manabu YOKOZUKA, Mizuki HASUMI
  • Publication number: 20200157383
    Abstract: The substrate for adhesive tape is thin in thickness and can also suppress repelling of a water-borne primer when the primer is being coated. The substrate for adhesive tape includes 25 to 75 parts by mass of a plasticizer and 5 to 40 parts by mass of an inorganic filler with respect to 100 parts by mass of polyvinyl chloride resin having a mean degree of polymerization of 1200 to 1800; wherein the inorganic filler has a mean particle size of 0.05 to 0.8 ?m; and the substrate has a thickness of 40 to 80 ?m.
    Type: Application
    Filed: August 1, 2018
    Publication date: May 21, 2020
    Applicant: Denka Company Limited
    Inventors: Akiyoshi Kimura, Mizuki Hasumi, Syota Sawamura
  • Publication number: 20200071573
    Abstract: An adhesive sheet including a substrate and adhesive layers that are arranged on one surface of the substrate with a primer layer being interposed therebetween, wherein the adhesive layers include a natural rubber and a tackifier, the adhesive sheet has a volume resistivity of 1×1010? cm or more and a tensile modulus at 100% elongation of 50 MPa or less as determined in accordance with JIS K 6251, the adhesive layers have a probe tack of 10N/cm2 or less as determined in accordance with ASTM D 2979, the adhesive force between the adhesive layers having a width of 15 mm is 1.5 N or more, and the adhesive force between the substrate and the adhesive layers having a width of 15 mm is 1.5 N or less.
    Type: Application
    Filed: March 15, 2018
    Publication date: March 5, 2020
    Applicants: DENKA COMPANY LIMITED, SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Manabu YOKOZUKA, Mizuki HASUMI, Manabu KUME, Takashi IDE
  • Patent number: 10435592
    Abstract: An object of the present invention is to provide a primer composition for application between the base film and the adhesive layer of an adhesive tape that can improve the adhesion between the base film and the adhesive layer of the adhesive tape and an adhesive tape prepared by using the primer composition. A primer composition, comprising 100 parts by mass (as solid matter) of a graft polymer of a natural rubber graft-polymerized with 15 to 65 mass % of methyl methacrylate and 25 to 300 parts by mass of a carboxyl group-modified acrylonitrile butadiene rubber.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: October 8, 2019
    Assignee: DENKA COMPANY LIMITED
    Inventors: Kohji Kubo, Mizuki Hasumi
  • Publication number: 20180105723
    Abstract: An object of the present invention is to provide a primer composition for application between the base film and the adhesive layer of an adhesive tape that can improve the adhesion between the base film and the adhesive layer of the adhesive tape and an adhesive tape prepared by using the primer composition. A primer composition, comprising 100 parts by mass (as solid matter) of a graft polymer of a natural rubber graft-polymerized with 15 to 65 mass % of methyl methacrylate and 25 to 300 parts by mass of a carboxyl group-modified acrylonitrile butadiene rubber.
    Type: Application
    Filed: December 15, 2017
    Publication date: April 19, 2018
    Applicant: Denka Company Limited
    Inventors: Kohji KUBO, Mizuki HASUMI
  • Patent number: 9879158
    Abstract: An object of the invention is to provide a primer composition for application between the base film and the adhesive layer of an adhesive tape that can improve the adhesion between the base film and the adhesive layer of the adhesive tape and an adhesive tape prepared by using the primer composition. A primer composition, comprising 100 parts by mass (as solid matter) of a graft polymer of a natural rubber graft-polymerized with 15 to 65 mass % of methyl methacrylate and 25 to 300 parts by mass of a carboxyl group-modified acrylonitrile butadiene rubber.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: January 30, 2018
    Assignee: DENKA COMPANY LIMITED
    Inventors: Kohji Kubo, Mizuki Hasumi
  • Publication number: 20170204297
    Abstract: Provided is a polyvinylidene fluoride resin adhesive film that restores the transparency of a damaged transparent base material by smoothing the surface irregularity generated by damaging and has surface-protecting properties superior in weather fastness and stain resistance. A polyvinylidene fluoride resin adhesive film, comprising a resin composition layer containing a polyvinylidene fluoride resin in an amount of 0 to 50 mass % and a polymethacrylic ester resin in an amount of 100 to 50 mass % (100% in total) and additionally an ultraviolet absorbent in an amount of 0.1 to 15 mass % with respect to the resin components therein, a resin composition layer laminated on one face thereof, containing a polyvinylidene fluoride resin in an amount of 100 to 50 mass % and a polymethacrylic ester resin in an amount of 0 to 50 mass % (100% in total) and an acrylic adhesive layer formed on the other face thereof.
    Type: Application
    Filed: July 13, 2015
    Publication date: July 20, 2017
    Applicant: DENKA COMPANY LIMITED
    Inventors: Mizuki HASUMI, Fukumu KOMODA
  • Publication number: 20140099503
    Abstract: An object of the present invention is to provide a primer composition for application between the base film and the adhesive layer of an adhesive tape that can improve the adhesion between the base film and the adhesive layer of the adhesive tape and an adhesive tape prepared by using the primer composition. A primer composition, comprising 100 parts by mass (as solid matter) of a graft polymer of a natural rubber graft-polymerized with 15 to 65 mass % of methyl methacrylate and 25 to 300 parts by mass of a carboxyl group-modified acrylonitrile butadiene rubber.
    Type: Application
    Filed: May 30, 2012
    Publication date: April 10, 2014
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Kohji Kubo, Mizuki Hasumi
  • Publication number: 20090202824
    Abstract: Provided are a tape substrate having excellent oil resistance as well as balanced properties of flexibility, a hand cutting property and heat resistance, and an adhesive tape using the tape substrate. The tape substrate contains an ethylene-aromatic vinyl compound copolymer with an isotactic stereoregularity. Furthermore, the ethylene-aromatic vinyl compound copolymer is one having an alternating structure of ethylene and the aromatic vinyl compound represented by the formula (1) below, and an isotactic diad index m of Ph (an aromatic group) in the structure of the copolymer being more than 0.75: where Ph is an aromatic group and xa is the number of repeating units and an integer of at least 2.
    Type: Application
    Filed: May 22, 2007
    Publication date: August 13, 2009
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Mizuki Hasumi, Seiji Saita, Masaru Hasegawa, Shigeru Suzuki, Akira Miyama, Ayumu Tsukamoto, Toru Arai