Patents by Inventor Sho GOJI
Sho GOJI 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).
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Patent number: 9919191Abstract: An object of the present invention is to provide a golf club grip showing a good feeling both at hitting and at waggling. The present invention provides a golf club grip comprising a cylindrical portion for inserting a shaft, wherein the cylindrical portion has a compression strain in a range from 46% to 55% at a compression stress of 20 kg/cm2, and a compression strain in a range from 63% to 69% at a compression stress of 120 kg/cm2.Type: GrantFiled: November 13, 2015Date of Patent: March 20, 2018Assignee: DUNLOP SPORTS CO. LTD.Inventors: Hidetaka Inoue, Kuniyasu Horiuchi, Toshiyuki Tarao, Kazuyoshi Shiga, Sho Goji, Chiemi Mikura, Hitoshi Oyama, Hiroshi Hasegawa
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Publication number: 20180043224Abstract: An object of the present invention is to provide a golf club grip having excellent grip performance under a wet condition. The present invention provides a golf club grip having an outermost surface layer, wherein the outermost surface layer contains (A) a crosslinked rubber and (B) a silica, and has, at at least a part thereof, a region where a spherical silica secondary particle with a particle size of 3 ?m or more exists in an amount of at least two particles/mm2. If a spherical silica secondary particle with a particle size of 3 ?m or more exists in a given amount at at least a part of the outermost surface layer, the golf club grip has an improved grip performance under a wet condition.Type: ApplicationFiled: August 11, 2017Publication date: February 15, 2018Applicants: Dunlop Sports Co. Ltd., Sumitomo Rubber Industries, Ltd.Inventors: Sho GOJI, Kazuyoshi SHIGA
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Patent number: 9855467Abstract: An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein when JIS-C hardness of the spherical core is measured at points located at distances of 0% (core center), 37.5%, 75.0% and 100% (core surface) from the core center of the spherical core, a hardness difference (Hs?Ho) between a surface hardness (Hs) thereof and a center hardness (Ho) thereof is 20 or more, a ratio ((H37.5?Ho)/(H75.0?Ho)) of a hardness difference (H37.5?Ho) to a hardness difference (H75.0?Ho) is 0.6 or less, and a compression deformation amount (D (mm)) of the spherical core and the 37.5% point hardness (H37.5) satisfy a relation of H37.5??9×D+95.Type: GrantFiled: May 30, 2014Date of Patent: January 2, 2018Assignee: DUNLOP SPORTS CO. LTD.Inventors: Ayaka Shindo, Chiemi Mikura, Ryota Sakamine, Sho Goji
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Patent number: 9717965Abstract: An object of the present invention is to provide a golf club grip excellent in grip performance in a wet condition. The present invention provides a golf club grip formed from a rubber composition comprising a base rubber and a crosslinking agent, wherein the base rubber comprises a hydrogenated acrylonitrile-butadiene rubber and/or a carboxyl-modified acrylonitrile-butadiene rubber.Type: GrantFiled: May 11, 2015Date of Patent: August 1, 2017Assignee: DUNLOP SPORTS CO. LTDInventors: Chiemi Mikura, Sho Goji, Kazuyoshi Shiga, Kuniyasu Horiuchi, Toshiyuki Tarao, Hidetaka Inoue, Hitoshi Oyama, Hiroshi Hasegawa
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Publication number: 20170182386Abstract: An object of the present invention is to provide a grip for sporting goods containing an acrylonitrile-butadiene based rubber as a base rubber and having an excellent grip performance and sustainability of grip performance under a wet condition. The present invention provides a grip for sporting goods comprising an outermost surface layer formed from a surface layer rubber composition, wherein the surface layer rubber composition contains (A) a base rubber and (B) a resin having a softening point in a range from 5° C. to 120° C., (A) the base rubber contains an acrylonitrile-butadiene based rubber, and (B) the resin is at least one type selected from the group consisting of a hydrogenated rosin ester, a disproportionated rosin ester, an ethylene-vinyl acetate copolymer, a coumarone resin, a phenol resin, a xylene resin and a styrene resin.Type: ApplicationFiled: December 23, 2016Publication date: June 29, 2017Applicant: Dunlop Sports Co. Ltd.Inventors: Hidetaka INOUE, Sho GOJI, Kuniyasu HORIUCHI, Kazuyoshi SHIGA, Chiemi MIKURA, Hitoshi OYAMA, Toshiyuki TARAO, Hiroshi HASEGAWA
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Patent number: 9630077Abstract: An object of the present invention is to provide a grip for sporting goods excellent in tensile strength and having a light weight. The present invention provides a grip for sporting goods comprising a cylindrical portion composed of a cylindrical inner layer and a cylindrical outer layer covering the cylindrical inner layer, wherein the cylindrical inner layer is a porous rubber layer or a porous resin layer, and the cylindrical outer layer is formed from a rubber composition containing an acrylonitrile-butadiene based rubber.Type: GrantFiled: November 13, 2015Date of Patent: April 25, 2017Assignee: DUNLAP SPORTS CO. LTD.Inventors: Chiemi Mikura, Sho Goji, Kazuyoshi Shiga, Kuniyasu Horiuchi, Toshiyuki Tarao, Hidetaka Inoue, Hitoshi Oyama, Hiroshi Hasegawa
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Patent number: 9586113Abstract: An object of the present invention is to provide a golf club grip comprising a layer containing a polar rubber and a layer containing a nonpolar rubber, and excellent in tensile strength. The present invention provides a golf club grip comprising a polar rubber layer and a nonpolar rubber layer, wherein the polar rubber layer is formed from a rubber composition containing a base rubber including a polar rubber in an amount of 50 mass % or more, the nonpolar rubber layer is formed from a rubber composition containing a base rubber including a nonpolar rubber in an amount of 50 mass % or more, the polar rubber layer and the nonpolar rubber layer are laminated via an interlayer formed from an interlayer composition containing an olefin rubber.Type: GrantFiled: October 30, 2015Date of Patent: March 7, 2017Assignee: Dunlop Sports Co. Ltd.Inventors: Sho Goji, Chiemi Mikura, Kazuyoshi Shiga, Kuniyasu Horiuchi, Toshiyuki Tarao, Hidetaka Inoue, Hitoshi Oyama, Hiroshi Hasegawa
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Patent number: 9586094Abstract: A method for manufacturing a golf ball showing a great flight distance on driver shots for includes the steps of: preparing a rubber composition containing a base rubber, an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, a crosslinking initiator and a carboxylic acid and/or a salt thereof; heat pressing the rubber composition at a press temperature ranging from t-40° C. to t-15° C. to mold a spherical core, wherein t ° C. is a one-minute half-life temperature of the crosslinking initiator; and forming at least one cover layer covering the spherical core.Type: GrantFiled: May 30, 2014Date of Patent: March 7, 2017Assignee: DUNLOP SPORTS CO. LTD.Inventors: Ayaka Shindo, Chiemi Mikura, Ryota Sakamine, Sho Goji
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Patent number: 9526949Abstract: An object of the present invention is to provide a golf ball traveling a great distance on driver shots. The present invention provides a golf ball comprising a constituting member formed from a rubber composition containing (a) a base rubber, (b) an ?, ?-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, and (c) an crosslinking initiator, wherein (b) the ?, ?-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or the metal salt thereof meets the following conditions (1) and (2) in a volume based distribution, when measuring a particle size thereof with a laser diffraction particle size analyzer; (1) a mode particle size is more than 10 ?m and 50 ?m or less, and (2) a volume ratio of particles having a particle size ranging from 6 ?m to 300 ?m is 60% or more.Type: GrantFiled: March 27, 2015Date of Patent: December 27, 2016Assignee: DUNLOP SPORTS CO., LTD.Inventors: Chiemi Mikura, Sho Goji
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Publication number: 20160339311Abstract: An object of the present invention is to provide a golf club grip having excellent adhesion between the grip body and the grip end thereof, and excellent durability. The present invention provides a golf club grip comprising a cylindrical grip body having a cylindrical inner layer and a cylindrical outer layer covering the cylindrical inner layer, and a grip end provided on an butt side end of the cylindrical grip body, wherein the cylindrical outer layer is interposed in at least a part of a space between a butt side end edge of the cylindrical inner layer and the grip end.Type: ApplicationFiled: May 20, 2016Publication date: November 24, 2016Applicant: DUNLOP SPORTS CO., LTD.Inventors: Sho GOJI, Chiemi MIKURA, Kazuyoshi SHIGA, Kuniyasu HORIUCHI, Toshiyuki TARAO, Hidetaka INOUE, Hitoshi OYAMA, Hiroshi HASEGAWA
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Publication number: 20160136491Abstract: An object of the present invention is to provide a golf club grip showing a good feeling both at hitting and at waggling. The present invention provides a golf club grip comprising a cylindrical portion for inserting a shaft, wherein the cylindrical portion has a compression strain in a range from 46% to 55% at a compression stress of 20 kg/cm2, and a compression strain in a range from 63% to 69% at a compression stress of 120 kg/cm2.Type: ApplicationFiled: November 13, 2015Publication date: May 19, 2016Applicant: DUNLOP SPORTS CO. LTD.Inventors: Hidetaka INOUE, Kuniyasu HORIUCHI, Toshiyuki TARAO, Kazuyoshi SHIGA, Sho GOJI, Chiemi MIKURA, Hitoshi OYAMA, Hiroshi HASEGAWA
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Publication number: 20160136492Abstract: An object of the present invention is to provide a grip for sporting goods excellent in tensile strength and having a light weight. The present invention provides a grip for sporting goods comprising a cylindrical portion composed of a cylindrical inner layer and a cylindrical outer layer covering the cylindrical inner layer, wherein the cylindrical inner layer is a porous rubber layer or a porous resin layer, and the cylindrical outer layer is formed from a rubber composition containing an acrylonitrile-butadiene based rubber.Type: ApplicationFiled: November 13, 2015Publication date: May 19, 2016Applicant: DUNLOP SPORTS CO. LTD.Inventors: Chiemi Mikura, Sho Goji, Kazuyoshi Shiga, Kuniyasu Horiuchi, Toshiyuki Tarao, Hidetaka Inoue, Hitoshi Oyama, Hiroshi Hasegawa
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Publication number: 20160121183Abstract: An object of the present invention is to provide a golf club grip comprising a layer containing a polar rubber and a layer containing a nonpolar rubber, and excellent in tensile strength. The present invention provides a golf club grip comprising a polar rubber layer and a nonpolar rubber layer, wherein the polar rubber layer is formed from a rubber composition containing a base rubber including a polar rubber in an amount of 50 mass % or more, the nonpolar rubber layer is formed from a rubber composition containing a base rubber including a nonpolar rubber in an amount of 50 mass % or more, the polar rubber layer and the nonpolar rubber layer are laminated via an interlayer formed from an interlayer composition containing an olefin rubber.Type: ApplicationFiled: October 30, 2015Publication date: May 5, 2016Applicant: DUNLOP SPORTS CO. LTD.Inventors: Sho GOJI, Chiemi MIKURA, Kazuyoshi SHIGA, Kuniyasu HORIUCHI, Toshiyuki TARAO, Hidetaka INOUE, Hitoshi OYAMA, Hiroshi HASEGAWA
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Publication number: 20150322245Abstract: An object of the present invention is to provide a golf club grip excellent in grip performance in a wet condition. The present invention provides a golf club grip formed from a rubber composition comprising a base rubber and a crosslinking agent, wherein the base rubber comprises a hydrogenated acrylonitrile-butadiene rubber and/or a carboxyl-modified acrylonitrile-butadiene rubber.Type: ApplicationFiled: May 11, 2015Publication date: November 12, 2015Applicant: DUNLOP SPORTS CO., LTD.Inventors: Chiemi MIKURA, Sho GOJI, Kazuyoshi SHIGA, Kuniyasu HORIUCHI, Toshiyuki TARAO, Hidetaka INOUE, Hitoshi OYAMA, Hiroshi HASEGAWA
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Publication number: 20150273278Abstract: An object of the present invention is to provide a golf ball traveling a great distance on driver shots. The present invention provides a golf ball comprising a constituting member formed from a rubber composition containing (a) a base rubber, (b) an ?, ?-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, and (c) an crosslinking initiator, wherein (b) the ?, ?-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or the metal salt thereof meets the following conditions (1) and (2) in a volume based distribution, when measuring a particle size thereof with a laser diffraction particle size analyzer; (1) a mode particle size is more than 10 ?m and 50 ?m or less, and (2) a volume ratio of particles having a particle size ranging from 6 ?m to 300 ?m is 60% or more.Type: ApplicationFiled: March 27, 2015Publication date: October 1, 2015Applicant: Dunlop Sports Co., Ltd.Inventors: Chiemi MIKURA, Sho GOJI
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Publication number: 20140357407Abstract: An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein when JIS-C hardness of the spherical core is measured at points located at distances of 0% (core center), 37.5%, 75.0% and 100% (core surface) from the core center of the spherical core, a hardness difference (Hs?Ho) between a surface hardness (Hs) thereof and a center hardness (Ho) thereof is 20 or more, a ratio ((H37.5?Ho)/(H75.0?Ho)) of a hardness difference (H37.5?Ho) to a hardness difference (H75.0?Ho) is 0.6 or less, and a compression deformation amount (D (mm)) of the spherical core and the 37.5% point hardness (H37.5) satisfy a relation of H37.5??9×D+95.Type: ApplicationFiled: May 30, 2014Publication date: December 4, 2014Applicant: Dunlop Sports Co., Ltd.Inventors: Ayaka SHINDO, Chiemi MIKURA, Ryota SAKAMINE, Sho GOJI
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Publication number: 20140357408Abstract: A method for manufacturing a golf ball showing a great flight distance on driver shots for includes the steps of: preparing a rubber composition containing a base rubber, an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, a crosslinking initiator and a carboxylic acid and/or a salt thereof; heat pressing the rubber composition at a press temperature ranging from t-40° C. to t-15° C. to mold a spherical core, wherein t ° C. is a one-minute half-life temperature of the crosslinking initiator; and forming at least one cover layer covering the spherical core.Type: ApplicationFiled: May 30, 2014Publication date: December 4, 2014Applicant: DUNLOP SPORTS CO., LTD.Inventors: Ayaka SHINDO, Chiemi MIKURA, Ryota SAKAMINE, Sho GOJI