Patents by Inventor Takaharu Doumae

Takaharu Doumae 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).

  • Metal-crosslinked organopolysiloxane-thio block vinyl copolymer and antifouling coating composition containing the metal-crosslinked copolymer
    Patent number: 8846821
    Abstract: The object of the present invention is to provide a silicone-based copolymer which has excellent long-term antifouling property even in a dry-wet alternate portion of a ship and the like or a portion thereof near the surface of water, is excellent also in mechanical strength and recoatability and exhibits high antifouling performance even if an antifouling agent is not added, and an antifouling coating composition containing the copolymer.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: September 30, 2014
    Assignee: Chugoku Marine Paints, Ltd.
    Inventors: Takaharu Doumae, Yoshio Yamada, Masaaki Oya, Fumio Hamazu, Makoto Tsuboi
  • METAL-CROSSLINKED ORGANOPOLYSILOXANE-THIO BLOCK VINYL COPOLYMER AND ANTIFOULING COATING COMPOSITION CONTAINING THE METAL-CROSSLINKED COPOLYMER
    Publication number: 20120258321
    Abstract: The object of the present invention is to provide a silicone-based copolymer which has excellent long-term antifouling property even in a dry-wet alternate portion of a ship and the like or a portion thereof near the surface of water, is excellent also in mechanical strength and recoatability and exhibits high antifouling performance even if an antifouling agent is not added, and an antifouling coating composition containing the copolymer.
    Type: Application
    Filed: December 16, 2010
    Publication date: October 11, 2012
    Applicant: CHUGOKU MARINE PAINTS, LTD.
    Inventors: Takaharu Doumae, Yoshio Yamada, Masaaki Oya, Fumio Hamazu, Makoto Tsuboi
  • HIGH-SOLID ANTIFOULING PAINT COMPOSITION, ANTIFOULING COATING FILM, BASE MATERIAL WITH COATING FILM, ANTIFOULING BASE MATERIAL, METHOD FOR FORMING COATING FILM ON SURFACE OF BASE MATERIAL, ANTIFOULING METHOD FOR BASE MATERIAL, AND HIGH-SOLID MULTI-PACKAGE ANTIFOULING PAINT COMPOSITION SET
    Publication number: 20100278876
    Abstract: Disclosed is a high-solid antifouling paint composition characterized by including: (A) a carboxyl group-containing copolymer that has a structural unit derived from an unsaturated carboxylic acid monomer (a1) and a structural unit derived from an other unsaturated compound monomer (a2) copolymerizable with the unsaturated carboxylic acid monomer (a1), and has a weight average molecular weight of 1,000 to 6,000 as measured with GPC, (B) a polyvalent metal compound capable of reacting with the carboxyl group of the carboxyl group-containing copolymer (A), and (C) an antifouling agent. The high-solid antifouling paint composition of the present invention provides an antifouling coating film that imposes less environmental burden, affects human bodies less, and has excellent antifouling performance, excellent persistence thereof and excellent mechanical strength.
    Type: Application
    Filed: December 15, 2006
    Publication date: November 4, 2010
    Applicant: CHUGOKU MARINE PAINTS, LTD.
    Inventors: Takaharu Doumae, Masaaki Oya, Junji Niimoto, Makoto Tsuboi