Patents by Inventor Yoshikazu Yabuki

Yoshikazu Yabuki 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: 7824739
    Abstract: The object of the present invention is to provide A method for producing a golf ball that is excellent In the durability of the mark, the adhesion of the paint Film and the productivity. In the present invention, since the curing agent contained in the paint covering the mark is used to cure the resin component forming the mark, there is no increase in the viscosity or the gellation of the ink for printing the mark, and thus the mark is printed well during the production of the golf ball.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: November 2, 2010
    Assignee: SRI Sports Limited
    Inventors: Koichi Fujisawa, Kazuhiko Isogawa, Yoshikazu Yabuki
  • Patent number: 7371193
    Abstract: The object of the present invention is to provide a golf ball having a paint film which is obtained from an environment-friendly aqueous paint and is excellent in the impact-resistance and the wear-resistance. The present invention provides a golf ball having a paint film on a surface of a golf ball body, wherein the paint film is obtained from an aqueous paint, and the paint film has an elongation at break of 80% or more and maximum stress of 170 kgf/cm2 (16.7 MPa) or more.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: May 13, 2008
    Assignee: SRI Sports Limited
    Inventors: Kazuhiko Isogawa, Koichi Fujisawa, Yoshikazu Yabuki
  • Patent number: 7326749
    Abstract: The present invention provides a golf ball which exhibits excellent durability and provides a long ball distance. The golf ball includes a core and an outer layer wrapping the core, wherein the outer layer is made of a resin composition containing cation-treated phillosilicate having a Shore D hardness of 56 or higher and 75 or lower. In particular, by use of a resin composition containing the cation-treated phillosilicate for a cover layer, the resultant golf ball has high hardness and high stiffness, exhibits excellent flight performance, and also has high durability.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: February 5, 2008
    Assignee: SRI Sports Limited
    Inventors: Koichi Fujisawa, Kazuhiko Isogawa, Yoshikazu Yabuki
  • Patent number: 7311616
    Abstract: A one-piece golf ball has a golf ball body made of a rubber composition, and the rubber composition contains 0.5 to 10 parts by mass of a titanium oxide relative to 100 parts by mass of a rubber component. The titanium oxide is surface-treated with a treating agent containing a zirconium component. The one-piece golf ball is superior in weatherability, with less or no discoloration or degradation with time.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: December 25, 2007
    Assignee: SRI Sports Limited
    Inventors: Koichi Fujisawa, Kazuhiko Isogawa, Yoshikazu Yabuki
  • Patent number: 7294069
    Abstract: The present invention provides a golf ball which provides a longer ball distance and excellent abrasion resistance while maintaining a soft shot feeling. The golf ball includes a core, and an outer layer wrapping the core, wherein the outer layer is made of a resin composition containing cation-treated phillosilicate. In particular, by use of a resin composition containing the cation-treated phillosilicate for a cover layer, the resultant golf ball exhibits excellent flight performance and abrasion resistance.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: November 13, 2007
    Assignee: SRI Sports Limited
    Inventors: Kazuhiko Isogawa, Koichi Fujisawa, Yoshikazu Yabuki
  • Patent number: 7207901
    Abstract: A golf club head comprises a main body and a coating film covering a metallic surface of the main body, wherein the coating film comprises a clear foundation layer formed on the metallic surface and containing acid-modified polyolefin based resin as its base resin, and a colored clear second layer formed outside the foundation layer so that said metallic surface is visible through the coating film.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: April 24, 2007
    Assignee: SRI Sports Limited
    Inventors: Yoshinori Sano, Yoshikazu Yabuki
  • Patent number: 7207904
    Abstract: A golf ball has a core, and a cover for covering the core. The cover contains 0.5 to 10 parts by mass of a titanium oxide relative to 100 parts by mass of a base resin composing the cover, and the titanium oxide is surface-treated with an oxide including at least one element selected from the group consisting of aluminum, silicon, zinc, zirconium, tin, and cerium, and/or a hydrate thereof The golf ball has less or no discoloration or degradation with time, and has superior weatherability.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: April 24, 2007
    Assignee: SRI Sports Limited
    Inventors: Kazuhiko Isogawa, Koichi Fujisawa, Yoshikazu Yabuki
  • Patent number: 7148290
    Abstract: A rubber composition for a golf ball having excellent rebound characteristics and excellent durability, and showing good workability, which contains a base rubber, a co-crosslinking agent, an organic peroxide and an inorganic filler, wherein the base rubber includes a polybutadiene containing a cis-1,4 bond of not less than 80%, having a Mooney viscosity of not less than 30 to less than 50 ML1+4(100° C.) and a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of 3.0 to 6.0, synthesized using a lanthanide-containing catalyst.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: December 12, 2006
    Assignee: SRI Sports Limited
    Inventors: Koichi Fujisawa, Yoshikazu Yabuki
  • Publication number: 20060009585
    Abstract: The present invention provides a golf ball which exhibits excellent durability and provides a long ball distance. The golf ball includes a core and an outer layer wrapping the core, wherein the outer layer is made of a resin composition containing cation-treated phillosilicate having a Shore D hardness of 56 or higher and 75 or lower. In particular, by use of a resin composition containing the cation-treated phillosilicate for a cover layer, the resultant golf ball has high hardness and high stiffness, exhibits excellent flight performance, and also has high durability.
    Type: Application
    Filed: June 22, 2005
    Publication date: January 12, 2006
    Inventors: Koichi Fujisawa, Kazuhiko Isogawa, Yoshikazu Yabuki
  • Publication number: 20060009308
    Abstract: The present invention provides a golf ball which provides a longer ball distance and excellent abrasion resistance while maintaining a soft shot feeling. The golf ball includes a core, and an outer layer wrapping the core, wherein the outer layer is made of a resin composition containing cation-treated phillosilicate. In particular, by use of a resin composition containing the cation-treated phillosilicate for a cover layer, the resultant golf ball exhibits excellent flight performance and abrasion resistance.
    Type: Application
    Filed: June 22, 2005
    Publication date: January 12, 2006
    Inventors: Kazuhiko Isogawa, Koichi Fujisawa, Yoshikazu Yabuki
  • Publication number: 20050282661
    Abstract: The object of the present invention is to provide a method for producing a golf ball that is excellent in the durability of the mark, the adhesion of the paint film, and the productivity. In the present invention, since the curing agent contained in the paint covering the mark is used to cure the resin component forming the mark, there is no increase in the viscosity or the gellation of the ink for printing the mark, and thus the mark is printed well during the production of the golf ball.
    Type: Application
    Filed: June 14, 2005
    Publication date: December 22, 2005
    Inventors: Koichi Fujisawa, Kazuhiko Isogawa, Yoshikazu Yabuki
  • Publication number: 20050282660
    Abstract: The object of the present invention is to provide a golf ball having a paint film which is obtained from an environment-friendly aqueous paint and is excellent in the impact-resistance and the wear-resistance. The present invention provides a golf ball having a paint film on a surface of a golf ball body, wherein the paint film is obtained from an aqueous paint, and the paint film has an elongation at break of 80% or more and maximum stress of 170 kgf/cm2 (16.7 MPa) or more.
    Type: Application
    Filed: June 14, 2005
    Publication date: December 22, 2005
    Inventors: Kazuhiko Isogawa, Koichi Fujisawa, Yoshikazu Yabuki
  • Publication number: 20050192122
    Abstract: A golf ball has a core, and a cover for covering the core. The cover contains 0.5 to 10 parts by mass of a titanium oxide relative to 100 parts by mass of a base resin composing the cover, and the titanium oxide is surface-treated with an oxide including at least one element selected from the group consisting of aluminum, silicon, zinc, zirconium, tin, and cerium, and/or a hydrate thereof The golf ball has less or no discoloration or degradation with time, and has superior weatherability.
    Type: Application
    Filed: February 16, 2005
    Publication date: September 1, 2005
    Inventors: Kazuhiko Isogawa, Koichi Fujisawa, Yoshikazu Yabuki
  • Publication number: 20050192399
    Abstract: The present invention provides a rubber composition for obtaining golf ball having excellent rebound characteristics and excellent durability, and showing good workability when producing. The present invention relates to a rubber composition for golf ball comprising a base rubber, a co-crosslinking agent, an organic peroxide and an inorganic filler, wherein the base rubber comprises a polybutadiene (a) containing a cis-1,4 bond of not less than 80%, having a Mooney viscosity of not less than 30 to less than 50 ML1+4(100° C.) and a ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn) of 3.0 to 6.0, synthesized using lanthanide-containing catalyst.
    Type: Application
    Filed: May 4, 2005
    Publication date: September 1, 2005
    Inventors: Koichi Fujisawa, Yoshikazu Yabuki
  • Publication number: 20050187035
    Abstract: A one-piece golf ball has a golf ball body made of a rubber composition, and the rubber composition contains 0.5 to 10 parts by mass of a titanium oxide relative to 100 parts by mass of a rubber component. The titanium oxide is surface-treated with a treating agent containing a zirconium component. The one-piece golf ball is superior in weatherability, with less or no discoloration or degradation with time.
    Type: Application
    Filed: January 28, 2005
    Publication date: August 25, 2005
    Inventors: Koichi Fujisawa, Kazuhiko Isogawa, Yoshikazu Yabuki
  • Patent number: 6729973
    Abstract: The present invention provides a solid golf ball having excellent rebound characteristics and excellent durability, and showing good workability when producing. The present invention relates to a solid golf ball composed of at least one layer of a rubber material as a component, wherein the rubber material is formed from the rubber composition comprising a base rubber, a co-crosslinking agent, an organic peroxide and an inorganic filler, and the rubber composition comprises 10 to 100 parts by weight of a polybutadiene containing a cis-1,4 bond of not less than 80%, having a Mooney viscosity of not less than 50 to less than 65 ML1+4 (100° C.), a ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn) of 2.5 to 3.5 and Mw of 50×104 to 70×104, synthesized using lanthanide-containing catalyst, based on 100 parts by weight of the base rubber.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: May 4, 2004
    Assignee: Sumitomo Rubber Industries, LTD
    Inventors: Koichi Fujisawa, Yoshikazu Yabuki, Kazuhisa Fushihara
  • Publication number: 20030203766
    Abstract: A golf club head comprises a main body and a coating film covering a metallic surface of the main body, wherein the coating film comprises a clear foundation layer formed on the metallic surface and containing acid-modified polyolefin based resin as its base resin, and a colored clear second layer formed outside the foundation layer so that said metallic surface is visible through the coating film.
    Type: Application
    Filed: April 17, 2003
    Publication date: October 30, 2003
    Inventors: Yoshinori Sano, Yoshikazu Yabuki
  • Publication number: 20030130067
    Abstract: The present invention provides a solid golf ball having excellent rebound characteristics and excellent durability, and showing good workability when producing. The present invention relates to a solid golf ball composed of at least one layer of a rubber material as a component, wherein the rubber material is formed from the rubber composition comprising a base rubber, a co-crosslinking agent, an organic peroxide and an inorganic filler, and the rubber composition comprises 10 to 100 parts by weight of a polybutadiene containing a cis-1,4 bond of not less than 80%, having a Mooney viscosity of not less than 50 to less than 65 ML1+4 (100° C.), a ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn) of 2.5 to 3.5 and Mw of 50×104 to 70×104, synthesized using lanthanide-containing catalyst, based on 100 parts by weight of the base rubber.
    Type: Application
    Filed: November 21, 2002
    Publication date: July 10, 2003
    Inventors: Koichi Fujisawa, Yoshikazu Yabuki, Kazuhisa Fushihara
  • Publication number: 20030125135
    Abstract: The present invention provides a golf ball, which is superior in rebound characteristics, scuff resistance, yellowing resistance and productivity, and has good moldability. The present invention relates to a golf ball comprising a core and a cover formed on the core, wherein the cover comprises a mixture of polyurethane-based thermoplastic elastomer formed by using cycloaliphatic diisocyanate and polyurethane-based thermoplastic elastomer formed by using aliphatic diisocyanate as a base resin.
    Type: Application
    Filed: November 12, 2002
    Publication date: July 3, 2003
    Inventors: Satoshi Iwami, Yoshikazu Yabuki
  • Publication number: 20030125450
    Abstract: The present invention provides a rubber composition for obtaining golf ball having excellent rebound characteristics and excellent durability, and showing good workability when producing. The present invention relates to a rubber composition for golf ball comprising a base rubber, a co-crosslinking agent, an organic peroxide and an inorganic filler, wherein the base rubber comprises a polybutadiene (a) containing a cis-1,4 bond of not less than 80%, having a Mooney viscosity of not less than 30 to less than 50 ML1+4 (100° C.) and a ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn) of 3.0 to 6.0, synthesized using lanthanide-containing catalyst.
    Type: Application
    Filed: November 4, 2002
    Publication date: July 3, 2003
    Inventors: Koichi Fujisawa, Yoshikazu Yabuki