Patents by Inventor Yukiyasu Kang

Yukiyasu Kang 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).

  • Chromium-free rust-inhibitive surface treatment agent for metal parts with zinc surfaces and metal parts with zinc surfaces coated with rust-inhibitive surface coated film
    Patent number: 8623503
    Abstract: Disclosed is a chromium-free rust-inhibitive surface treatment agent to form a siliceous film that rarely cracks or peels off and yields an excellent rust-inhibitive performance on zinc surfaces of a metal part. The chromium-free rust-inhibitive surface treatment agent is an alcoholic solution of alkoxysilane oligomer having weight-averaged molecular weight of 1,000 to 10,000, and 2.5 to 15% of silicon in molecules of the alkoxysilane oligomer has been replaced with titanium. To prepare partly titanium-replaced alkoxysilane oligomer, titanium compound, in which about a half of alkoxy groups in titanium tetraalkoxide has been chelated, is reacted with tetraalkoxysilane monomer or alkoxysilane oligomer in the alcoholic solution.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: January 7, 2014
    Assignee: Hoden Seimitsu Kako Kenkyusho Co., Ltd.
    Inventors: Yasuhiko Endo, Hideaki Nogami, Shunjiro Watanabe, Shoichiro Adachi, Yukiyasu Kang
  • CHROMIUM-FREE RUST-INHIBITIVE SURFACE TREATMENT AGENT FOR METAL PARTS WITH ZINC SURFACES AND METAL PARTS WITH ZINC SURFACES COATED WITH RUST-INHIBITIVE SURFACE COATED FILM
    Publication number: 20130122238
    Abstract: Disclosed is a chromium-free rust-inhibitive surface treatment agent to form a siliceous film that rarely cracks or peels off and yields an excellent rust-inhibitive performance on zinc surfaces of a metal part. The chromium-free rust-inhibitive surface treatment agent is an alcoholic solution of alkoxysilane oligomer having weight-averaged molecular weight of 1,000 to 10,000, and 2.5 to 15% of silicon in molecules of the alkoxysilane oligomer has been replaced with titanium. To prepare partly titanium-replaced alkoxysilane oligomer, titanium compound, in which about a half of alkoxy groups in titanium tetraalkoxide has been chelated, is reacted with tetraalkoxysilane monomer or alkoxysilane oligomer in the alcoholic solution.
    Type: Application
    Filed: January 4, 2013
    Publication date: May 16, 2013
    Inventors: Yasuhiko ENDO, Hideaki NOGAMI, Shunjiro WATANABE, Shoichiro ADACHI, Yukiyasu KANG
  • Chromium-free rust-inhibitive surface treatment agent for metal parts with zinc surfaces and metal parts with zinc surfaces coated with rust-inhibitive surface coated film
    Patent number: 8367201
    Abstract: Disclosed is a chromium-free rust-inhibitive surface treatment agent to form a siliceous film that rarely cracks or peels off and yields an excellent rust-inhibitive performance on zinc surfaces of a metal part. The chromium-free rust-inhibitive surface treatment agent is an alcoholic solution of alkoxysilane oligomer having weight-averaged molecular weight of 1,000 to 10,000, and 2.5 to 15% of silicon in molecules of the alkoxysilane oligomer has been replaced with titanium. To prepare partly titanium-replaced alkoxysilane oligomer, titanium compound, in which about a half of alkoxy groups in titanium tetraalkoxide has been chelated, is reacted with tetraalkoxysilane monomer or alkoxysilane oligomer in the alcoholic solution.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: February 5, 2013
    Assignee: Hoden Seimitsu Kako Kenkyusho Co., Ltd.
    Inventors: Yasuhiko Endo, Hideaki Nogami, Shunjiro Watanabe, Shoichiro Adachi, Yukiyasu Kang
  • CHROMIUM-FREE RUST-INHIBITIVE SURFACE TREATMENT AGENT FOR METAL PARTS WITH ZINC SURFACES AND METAL PARTS WITH ZINC SURFACES COATED WITH RUST-INHIBITIVE SURFACE COATED FILM
    Publication number: 20090169875
    Abstract: Disclosed is a chromium-free rust-inhibitive surface treatment agent to form a siliceous film that rarely cracks or peels off and yields an excellent rust-inhibitive performance on zinc surfaces of a metal part. The chromium-free rust-inhibitive surface treatment agent is an alcoholic solution of alkoxysilane oligomer having weight-averaged molecular weight of 1,000 to 10,000, and 2.5 to 15% of silicon in molecules of the alkoxysilane oligomer has been replaced with titanium. To prepare partly titanium-replaced alkoxysilane oligomer, titanium compound, in which about a half of alkoxy groups in titanium tetraalkoxide has been chelated, is reacted with tetraalkoxysilane monomer or alkoxysilane oligomer in the alcoholic solution.
    Type: Application
    Filed: April 13, 2007
    Publication date: July 2, 2009
    Applicant: Hoden Seimitsu Kako Kenkyusho Co., Ltd.
    Inventors: Yasuhiko Endo, Hideaki Nogami, Shunjiro Watanabe, Shoichiro Adachi, Yukiyasu Kang