Patents by Inventor Shun KURIHARA
Shun KURIHARA 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: 10265585Abstract: An object of the present invention is to provide a golf ball excellent in flying performance, in particular, to provide a golf ball traveling a great flight distance. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is 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, (c) a crosslinking initiator, and (d1) an aromatic carboxylic acid or (d2) an aromatic carboxylic acid salt, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: GrantFiled: October 17, 2016Date of Patent: April 23, 2019Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Chiemi Mikura, Kazuhisa Fushihara, Mikio Yamada, Shun Kurihara, Ayaka Shindo
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Patent number: 9975007Abstract: 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 the spherical core has a difference between absorbance of the absorption peak appeared at 1560±30 cm?1 at a surface thereof and absorbance of the absorption peak appeared at 1560±30 cm?1 at a center thereof of 0.024 or more, when measuring the spherical core with a Fourier transform infrared spectrophotometer.Type: GrantFiled: August 23, 2012Date of Patent: May 22, 2018Assignee: DUNLOP SPORTS CO., LTD.Inventors: Ayaka Shindo, Chiemi Mikura, Shun Kurihara, Kazuhisa Fushihara
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Patent number: 9873022Abstract: An object of the present invention is to provide a golf ball having a low spin rate 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator and (d) a carboxylic acid having a benzene ring and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: GrantFiled: September 22, 2015Date of Patent: January 23, 2018Assignee: DUNLOP SPORTS CO. LTD.Inventors: Ryota Sakamine, Chiemi Mikura, Shun Kurihara, Ayaka Shindo
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Patent number: 9566476Abstract: An object of the present invention is to provide a golf ball excellent in flying performance, in particular, to provide a golf ball traveling a great flight distance. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is 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, (c) a crosslinking initiator, and (d) a carboxylic acid, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: GrantFiled: December 2, 2011Date of Patent: February 14, 2017Assignee: DUNLOP SPORTS CO. LTD.Inventors: Chiemi Mikura, Kazuhisa Fushihara, Mikio Yamada, Shun Kurihara, Ayaka Shindo
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Publication number: 20170036068Abstract: An object of the present invention is to provide a golf ball excellent in flying performance, in particular, to provide a golf ball traveling a great flight distance. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is 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, (c) a crosslinking initiator, and (d1) an aromatic carboxylic acid or (d2) an aromatic carboxylic acid salt, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: ApplicationFiled: October 17, 2016Publication date: February 9, 2017Applicant: Dunlop Sports Co., Ltd.Inventors: Chiemi MIKURA, Kazuhisa FUSHIHARA, Mikio YAMADA, Shun KURIHARA, Ayaka SHINDO
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Patent number: 9486673Abstract: An object of the present invention is to provide a golf ball having a low spin rate on driver shots and excellent in flight distance performance. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is 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, (c) a crosslinking initiator, and (d) a salt of a carboxylic acid, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: GrantFiled: December 27, 2011Date of Patent: November 8, 2016Assignee: DUNLOP SPORTS CO. LTD.Inventors: Chiemi Mikura, Kazuhisa Fushihara, Mikio Yamada, Shun Kurihara, Ayaka Shindo
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Patent number: 9283442Abstract: 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator and (d) a branched carboxylic acid and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: GrantFiled: July 10, 2012Date of Patent: March 15, 2016Assignee: DUNLOP SPORTS CO. LTD.Inventors: Ayaka Shindo, Chiemi Mikura, Shun Kurihara, Kazuhisa Fushihara
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Publication number: 20160008666Abstract: An object of the present invention is to provide a golf ball having a low spin rate 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator and (d) a carboxylic acid having a benzene ring and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: ApplicationFiled: September 22, 2015Publication date: January 14, 2016Applicant: DUNLOP SPORTS CO., LTD.Inventors: Ryota SAKAMINE, Chiemi MIKURA, Shun KURIHARA, Ayaka SHINDO
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Patent number: 9174092Abstract: An object of the present invention is to provide a golf ball having a low spin rate 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator and (d) a carboxylic acid having a benzene ring and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: GrantFiled: December 27, 2012Date of Patent: November 3, 2015Assignee: DUNLOP SPORTS CO. LTD.Inventors: Ryota Sakamine, Chiemi Mikura, Shun Kurihara, Ayaka Shindo
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Patent number: 9162112Abstract: An object of the present invention is to provide a golf ball traveling 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator, (d) a carboxylic acid having 1 to 14 carbon atoms and/or a salt thereof, and (e) a halogen-substituted thiophenol and/or a metal salt thereof as an organic sulfur compound, provided that the rubber composition further contains (f) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: GrantFiled: November 14, 2012Date of Patent: October 20, 2015Assignee: DUNLOP SPORTS CO. LTD.Inventors: Chiemi Mikura, Shun Kurihara, Ayaka Shindo, Ryota Sakamine
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Publication number: 20130244810Abstract: An object of the present invention is to provide a golf ball traveling 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator, (d) a carboxylic acid having 4 to 30 carbon atoms and/or a salt thereof, and (e) a halogen-substituted thiophenol and/or a metal salt thereof as an organic sulfur compound, provided that the rubber composition further contains (f) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: ApplicationFiled: March 14, 2013Publication date: September 19, 2013Applicant: DUNLOP SPORTS CO., LTD.Inventors: Chiemi MIKURA, Shun KURIHARA, Ayaka SHINDO, Ryota SAKAMINE
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Publication number: 20130053181Abstract: 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 the spherical core has a difference between absorbance of the absorption peak appeared at 1560±30 cm?1 at a surface thereof and absorbance of the absorption peak appeared at 1560±30 cm?1 at a center thereof of 0.024 or more, when measuring the spherical core with a Fourier transform infrared spectrophotometer.Type: ApplicationFiled: August 23, 2012Publication date: February 28, 2013Applicant: DUNLOP SPORTS CO., LTD.Inventors: Ayaka SHINDO, Chiemi MIKURA, Shun KURIHARA, Kazuhisa FUSHIHARA
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Publication number: 20130017905Abstract: 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator and (d) a branched carboxylic acid and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: ApplicationFiled: July 10, 2012Publication date: January 17, 2013Inventors: Ayaka SHINDO, Chiemi Mikura, Shun Kurihara, Kazuhisa Fushihara
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Publication number: 20120329574Abstract: 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator and (d) a carboxylic acid having 1 to 14 carbon atoms, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: ApplicationFiled: June 22, 2012Publication date: December 27, 2012Inventors: Chiemi MIKURA, Ayaka SHINDO, Shun KURIHARA, Kazuhisa FUSHIHARA
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Publication number: 20120329575Abstract: 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 the spherical core is formed from a rubber composition containing (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, (c) a crosslinking initiator and (d) a salt of a carboxylic acid having 1 to 13 carbon atoms, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: ApplicationFiled: June 22, 2012Publication date: December 27, 2012Inventors: Chiemi Mikura, Ayaka Shindo, Shun Kurihara, Kazuhisa Fushihara
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Publication number: 20120172149Abstract: An object of the present invention is to provide a golf ball having a low spin rate on driver shots and excellent in flight distance performance. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is 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, (c) a crosslinking initiator, and (d) a salt of a carboxylic acid, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: ApplicationFiled: December 27, 2011Publication date: July 5, 2012Applicant: SRI SPORTS LIMITEDInventors: Chiemi MIKURA, Kazuhisa FUSHIHARA, Mikio YAMADA, Shun KURIHARA, Ayaka SHINDO
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Publication number: 20120142453Abstract: An object of the present invention is to provide a golf ball excellent in flying performance, in particular, to provide a golf ball traveling a great flight distance. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is 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, (c) a crosslinking initiator, and (d) a carboxylic acid, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.Type: ApplicationFiled: December 2, 2011Publication date: June 7, 2012Applicant: SRI SPORTS LIMITEDInventors: Chiemi MIKURA, Kazuhisa FUSHIHARA, Mikio YAMADA, Shun KURIHARA, Ayaka SHINDO