Patents by Inventor Naoyuki Seike

Naoyuki Seike 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).

  • Powder coating composition
    Patent number: 7960475
    Abstract: A powder coating composition of the present invention includes, as essential components, an epoxy group-containing vinyl copolymer (A) with a glass transition temperature of 40° C. or higher, an epoxy group-containing vinyl copolymer (B) that contains organosiloxane side chains and has a glass transition temperature of 0° C. or lower, and a polyvalent carboxylic acid (C), and is able to form a coating film with excellent external appearance and scratch resistance.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: June 14, 2011
    Assignee: DIC Corporation
    Inventors: Naoyuki Seike, Koichi Yamaguchi, Yutaka Furuya, Tetsuro Agawa
  • Powder Coating Composition
    Publication number: 20070240613
    Abstract: A powder coating composition of the present invention includes, as essential components, an epoxy group-containing vinyl copolymer (A) with a glass transition temperature of 40° C. or higher, an epoxy group-containing vinyl copolymer (B) that contains organosiloxane side chains and has a glass transition temperature of 0° C. or lower, and a polyvalent carboxylic acid (C), and is able to form a coating film with excellent external appearance and scratch resistance.
    Type: Application
    Filed: March 9, 2005
    Publication date: October 18, 2007
    Applicant: DAINIPPON INK AND CHEMICALS, INC.
    Inventors: Naoyuki Seike, Koichi Yamaguchi, Yutaka Furuya, Tetsuro Agawa
  • Powder coating of epoxy group-containing vinyl copolymers with different Tg's and polycarboxylic acid
    Patent number: 6844397
    Abstract: The present invention provides a powder coating composition, which can ensure excellent smoothness, scratch resistance, water resistance and humidity resistance, when formed into a thin film, and a coating film forming method. The powder coating composition contains an epoxy group-containing vinyl copolymer (A) having a glass transition temperature of 40° C. or higher and a number-average molecular weight of 1,000 to 2,500, an epoxy group-containing vinyl copolymer (B) having a glass transition temperature of 0° C. or lower, and a polycarboxylic acid (C). 30 to 90% by weight of a polymerization unit of the epoxy group-containing vinyl copolymer (B) originates in a methacrylic acid alkyl ester (b-1) which has an alkyl group having 8 or more carbon atoms.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: January 18, 2005
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Naoyuki Seike, Koichi Yamaguchi, Katsuhiko Okada, Tetsuro Agawa
  • Powder coating composition and coating film forming method
    Publication number: 20030211326
    Abstract: The present invention provides a powder coating composition, which can ensure excellent smoothness, scratch resistance, water resistance and humidity resistance, when formed into a thin film, and a coating film forming method. The powder coating composition contains an epoxy group-containing vinyl copolymer (A) having a glass transition temperature of 40° C. or higher and a number-average molecular weight of 1,000 to 2,500, an epoxy group-containing vinyl copolymer (B) having a glass transition temperature of 0° C. or lower, and a polycarboxylic acid (C). 30 to 90% by weight of a polymerization unit of the epoxy group-containing vinyl copolymer (B) originates in a methacrylic acid alkyl ester (b-1) which has an alkyl group having 8 or more carbon atoms.
    Type: Application
    Filed: May 13, 2002
    Publication date: November 13, 2003
    Applicant: Dainippon Ink and Chemicals, Inc.
    Inventors: Naoyuki Seike, Koichi Yamaguchi, Katsuhiko Okada, Tetsuro Agawa