Patents by Inventor Tomoka Kitago

Tomoka Kitago 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).

  • Golf ball resin composition and golf ball
    Patent number: 9155939
    Abstract: The present invention aims to provide a golf ball resin composition excellent in resilience and flexibility, and a golf ball having excellent properties in terms of resilience and shot feeling. The present invention relates to a golf ball resin composition, including: (A) at least one selected from the group consisting of: (a-1) a binary copolymer of an olefin and a C3-C8 ?,?-unsaturated carboxylic acid; (a-2) a metal ion-neutralized product of a binary copolymer of an olefin and a C3-C8 ?,?-unsaturated carboxylic acid; (a-3) a ternary copolymer of an olefin, a C3-C8 ?,?-unsaturated carboxylic acid, and an ?,?-unsaturated carboxylic acid ester; and (a-4) a metal ion-neutralized product of a ternary copolymer of an olefin, a C3-C8 ?,?-unsaturated carboxylic acid, and an ?,?-unsaturated carboxylic acid ester, and (B) a compound containing a hydrocarbon chain, a cationic moiety, and an anionic moiety in its molecule.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: October 13, 2015
    Assignee: DUNLOP SPORTS CO. LTD.
    Inventors: Kazuki Shiga, Ryo Murakami, Takahiro Shigemitsu, Hideaki Kimura, Tomoka Kitago
  • Golf ball resin composition and golf ball
    Patent number: 9062178
    Abstract: An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball resin composition having the spin-lattice relaxation time (T1) of 13C nucleus measured by a High resolution solid state carbon nuclear magnetic resonance (NMR) method of 7.3 seconds or shorter.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: June 23, 2015
    Assignee: DUNLOP SPORTS CO., LTD.
    Inventors: Kazuyoshi Shiga, Ryo Murakami, Hideaki Kimura, Tomoka Kitago, Takahiro Shigemitsu
  • GOLF BALL RESIN COMPOSITION AND GOLF BALL
    Publication number: 20130079178
    Abstract: The present invention aims to provide a golf ball resin composition excellent in resilience and flexibility, and a golf ball having excellent properties in terms of resilience and shot feeling. The present invention relates to a golf ball resin composition, including: (A) at least one selected from the group consisting of: (a-1) a binary copolymer of an olefin and a C3-C8 ?,?-unsaturated carboxylic acid; (a-2) a metal ion-neutralized product of a binary copolymer of an olefin and a C3-C8 ?,?-unsaturated carboxylic acid; (a-3) a ternary copolymer of an olefin, a C3-C8 ?,?-unsaturated carboxylic acid, and an ?,?-unsaturated carboxylic acid ester; and (a-4) a metal ion-neutralized product of a ternary copolymer of an olefin, a C3-C8 ?,?-unsaturated carboxylic acid, and an ?,?-unsaturated carboxylic acid ester, and (B) a compound containing a hydrocarbon chain, a cationic moiety, and an anionic moiety in its molecule.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 28, 2013
    Inventors: Kazuki SHIGA, Ryo Murakami, Takahiro Shigemitsu, Hideaki Kimura, Tomoka Kitago
  • GOLF BALL RESIN COMPOSITION AND GOLF BALL
    Publication number: 20120165120
    Abstract: An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball resin composition having the spin-lattice relaxation time (T1) of 13C nucleus measured by a High resolution solid state carbon nuclear magnetic resonance (NMR) method of 7.3 seconds or shorter.
    Type: Application
    Filed: November 23, 2011
    Publication date: June 28, 2012
    Inventors: Kazuyoshi SHIGA, Ryo Murakami, Hideaki Kimura, Tomoka Kitago, Takahiro Shigemitsu