Patents by Inventor Tomohisa Sumida

Tomohisa Sumida 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).

  • Patent number: 10273366
    Abstract: An anticorrosive coating composition is provided which is excellent in adhesion to a substrate and in anticorrosiveness, and which provides a coating film whose surfaces hardly have bubbles remaining thereon even when the coating composition is applied by using a brush or a roller. The anticorrosive coating composition includes an epoxy resin (a), a curing agent (b) and a poly-?-olefin (c) that includes a structural unit derived from an ?-olefin having 6 or more carbon atoms.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: April 30, 2019
    Assignee: CHUGOKU MARINE PAINTS, LTD.
    Inventors: Takahiro Nishiguchi, Tomohisa Sumida, Shingo Wakisaka
  • Patent number: 9790397
    Abstract: The present invention relates to an anticorrosive coating composition comprising an epoxy resin (a), a curing agent (b), an amide wax (c), and a liquid acrylic polymer (d) including a structural unit derived from an acrylate having an alkyl group of 4 to 18 carbon atoms. The anticorrosive coating composition of the present invention can form an anticorrosive coating film that is excellent adhesion to a metal substrate, anticorrosive properties and so on.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: October 17, 2017
    Assignee: CHUGOKU MARINE PAINTS, LTD.
    Inventors: Shingo Wakisaka, Tomohisa Sumida, Naoya Nakamura
  • Publication number: 20160200916
    Abstract: An anticorrosive coating composition is provided which is excellent in adhesion to a substrate and in anticorrosiveness, and which provides a coating film whose surfaces hardly have bubbles remaining thereon even when the coating composition is applied by using a brush or a roller. The anticorrosive coating composition includes an epoxy resin (a), a curing agent (b) and a poly-?-olefin (c) that includes a structural unit derived from an ?-olefin having 6 or more carbon atoms.
    Type: Application
    Filed: August 21, 2014
    Publication date: July 14, 2016
    Applicant: CHUGOKU MARINE PAINTS,. LTD.
    Inventors: Takahiro NISHIGUCHI, Tomohisa SUMIDA, Shingo WAKISAKA
  • Publication number: 20150368505
    Abstract: The present invention relates to an anticorrosive coating composition comprising an epoxy resin (a), a curing agent (b), an amide wax (c), and a liquid acrylic polymer (d) including a structural unit derived from an acrylate having an alkyl group of 4 to 18 carbon atoms. The anticorrosive coating composition of the present invention can form an anticorrosive coating film that is excellent adhesion to a metal substrate, anticorrosive properties and so on.
    Type: Application
    Filed: March 4, 2014
    Publication date: December 24, 2015
    Applicant: CHUGOKU MARINE PAINTS, LTD.
    Inventors: Shingo WAKISAKA, Tomohisa SUMIDA, Naoya NAKAMURA
  • Publication number: 20150361271
    Abstract: The present invention relates to an anticorrosive coating composition for use in the formation of a coating film having a dry film thickness of 100 ?m or more comprising an epoxy resin (A), a curing agent (B), a silane coupling agent (C), an oxidized polyethylene wax (D), and an extender pigment (E), but substantially includes no fatty acid amide wax. The anticorrosive coating composition of the present invention can form an anticorrosive coating film that is excellent adhesion to a metal substrate, anticorrosive properties and so on.
    Type: Application
    Filed: March 4, 2014
    Publication date: December 17, 2015
    Applicant: CHUGOKU MARINE PAINTS, LTD.
    Inventors: Osamu KATO, Tomohisa SUMIDA, Naoya NAKAMURA
  • Publication number: 20100004355
    Abstract: The anticorrosive coating composition of the present invention is characterized by comprising (A) an epoxy resin, (B) an amine curing agent and (C) a hydroxyl group-containing coumarone resin wherein the hydroxyl group-containing coumarone resin (C) is contained in an amount of 1 to 500 parts by weight based on 100 parts by weight of the epoxy resin (A). The hydroxyl group-containing coumarone resin (C) preferably has a hydroxyl group content in one molecule of 1 to 5% and a softening point of not higher than 200° C. The anticorrosive coating composition can form a coating film in which the plural resin components are homogeneously mixed and which are excellent in anticorrosion properties, water resistance and adhesion. Further, since the coating composition is free from tar unlike conventional anticorrosive coating compositions, it can form a clear coating film free from bleeding out of any component, and safety and hygiene problems at the time of coating operation thereof do not occur.
    Type: Application
    Filed: April 23, 2007
    Publication date: January 7, 2010
    Applicant: CHUGOKU MARINE PAINTS, LTD.
    Inventor: Tomohisa Sumida
  • Publication number: 20090226729
    Abstract: A high-solids anticorrosive coating composition which comprises a main ingredient (A) comprising an epoxy resin (a1) and a hardener ingredient (B) comprising an alicyclic amine hardener (b1) and/or a Mannich type hardener (b2), the ingredient (A) and/or the ingredient (B) containing at least either of an additive (a2) selected among epoxidized reactive diluents and modified epoxy resins and a coating film modifier (ab) selected among petroleum resins, xylene resins, coumarone resins, terpene phenol resins and vinyl chloride copolymers. The high-solids anticorrosive coating composition especially of the rapidly curable type is characterized by containing a high-boiling organic solvent having a boiling point exceeding 150° C. and containing substantially no organic solvent having a boiling point of 150° C. or lower.
    Type: Application
    Filed: August 10, 2005
    Publication date: September 10, 2009
    Applicant: CHUGOKU MARINE PAINTS, LTD.
    Inventors: Jyunji Niimoto, Soushi Kanameda, Tomohisa Sumida, Yukio Miyachi, Hideyuki Tanaka