Patents by Inventor Ryo Murakami
Ryo Murakami 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: 9309350Abstract: An object of the present invention is to provide a golf ball polyurethane 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 polyurethane composition comprising, as a resin component, a polyurethane elastomer including a polyisocyanate with at least two alicyclic hydrocarbon structures having 3 or more carbon atoms as a constituting component, and having a storage modulus E? (Pa) and a loss modulus E? (Pa) satisfying a following expression; log(E?/E?2)??6.08 when measured in a tensile mode using a dynamic viscoelasticity measuring apparatus.Type: GrantFiled: August 23, 2012Date of Patent: April 12, 2016Assignee: DUNLOP SPORTS CO., LTD.Inventors: Kazuyoshi Shiga, Ryo Murakami, Toshiyuki Tarao, Takahiro Shigemitsu
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Patent number: 9192818Abstract: An object of the present invention is to provide a soft golf ball resin composition excellent in the shot feeling and resilience. The present invention provides a golf ball resin composition comprising: (A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) a binary ionomer resin, (a-3) a ternary copolymer, and (a-4) a ternary ionomer resin, (B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof; and (C) 0 part to 200 parts by mass of a basic inorganic metal compound. The golf ball of the present invention comprises a constituent member formed from the golf ball resin composition.Type: GrantFiled: July 6, 2012Date of Patent: November 24, 2015Assignee: DUNLOP SPORTS CO. LTD.Inventors: Kazuyoshi Shiga, Ryo Murakami
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Patent number: 9155939Abstract: 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: GrantFiled: September 13, 2012Date of Patent: October 13, 2015Assignee: DUNLOP SPORTS CO. LTD.Inventors: Kazuki Shiga, Ryo Murakami, Takahiro Shigemitsu, Hideaki Kimura, Tomoka Kitago
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Patent number: 9119991Abstract: The present invention provides a golf ball resin composition comprising (A) an ionomer resin component and (B) a compound having an anionic part within a molecule thereof, wherein with respect to a metal ion contained in the golf ball resin composition, (A) the ionomer resin component and (B) the compound having the anionic part within the molecule thereof, following coordinate energies obtained by ab initio molecular orbital calculation method using a basis function B3LYP/6-31G(d) satisfy the following expression: 0.3?(A?C)/(B?C)?0.6, wherein coordinate energy A is the coordinate energy between the metal ion and the anionic part of (B) component, coordinate energy B is the coordinate energy between the metal ion and the carboxyl ion of (A) component, and coordinate energy C is the coordinate energy between the metal ion and the olefin of (A) the ionomer resin component.Type: GrantFiled: December 28, 2012Date of Patent: September 1, 2015Assignee: DUNLOP SPORTS CO. LTD.Inventors: Yumi Kanemitsu, Ryo Murakami
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Patent number: 9062178Abstract: 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: GrantFiled: November 23, 2011Date of Patent: June 23, 2015Assignee: DUNLOP SPORTS CO., LTD.Inventors: Kazuyoshi Shiga, Ryo Murakami, Hideaki Kimura, Tomoka Kitago, Takahiro Shigemitsu
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Patent number: 9006346Abstract: The present invention provides a resin composition for a golf ball and a golf ball which have high resilience while maintaining soft compression and also have low spin on driver shots, and therefore can achieve a long flight distance. The present invention relates to a resin composition for a golf ball, including an ionomer resin consisting of a metal ion-neutralized copolymer of (A) a C3-8 ?,?-unsaturated carboxylic acid and (B) a C3-8 ?,?-unsaturated carboxylic acid ester, the ionomer resin having a mass ratio of (A)/(B) of 10/90 to 25/75, and a degree of neutralization of 30 to 105 mol %.Type: GrantFiled: December 26, 2012Date of Patent: April 14, 2015Assignee: Dunlop Sports Co., Ltd.Inventors: Kazuki Shiga, Ryo Murakami, Yoshiyuki Ikeda
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Patent number: 8944936Abstract: 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 golf ball resin composition of the present invention is characterized in that a storage modulus E? (Pa) and a loss modulus E? (Pa) satisfy a following expression; log(E?/E?2)??6.08 when measured at the conditions of the temperature of 12° C., the oscillation frequency of 10 Hz, and a strain of 0.05% in a tensile mode using a dynamic viscoelasticity measuring apparatus.Type: GrantFiled: November 23, 2011Date of Patent: February 3, 2015Assignee: SRI Sports LimitedInventors: Kazuyoshi Shiga, Ryo Murakami, Takahiro Shigemitsu
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Publication number: 20130079178Abstract: 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: ApplicationFiled: September 13, 2012Publication date: March 28, 2013Inventors: Kazuki SHIGA, Ryo Murakami, Takahiro Shigemitsu, Hideaki Kimura, Tomoka Kitago
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Publication number: 20130053176Abstract: An object of the present invention is to provide a golf ball polyurethane 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 polyurethane composition comprising, as a resin component, a polyurethane elastomer including a polyisocyanate with at least two alicyclic hydrocarbon structures having 3 or more carbon atoms as a constituting component, and having a spin-lattice relaxation time (T1) of 13C nucleus of 7.3 seconds or less measured by a High resolution solid state nuclear magnetic resonance (NMR) method.Type: ApplicationFiled: August 23, 2012Publication date: February 28, 2013Applicant: DUNLOP SPORTS CO., LTD.Inventors: Kazuyoshi SHIGA, Ryo MURAKAMI, Toshiyuki TARAO, Takahiro SHIGEMITSU
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Publication number: 20130053174Abstract: An object of the present invention is to provide a golf ball polyurethane 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 polyurethane composition comprising, as a resin component, a polyurethane elastomer including a polyisocyanate with one alicyclic hydrocarbon structure having 3 or more carbon atoms as a constituting component, and having a storage modulus E? (Pa) and a loss modulus E? (Pa) satisfying a following expression; log(E?/E?2)??6.53 when measured in a tensile mode using a dynamic viscoelasticity measuring apparatus.Type: ApplicationFiled: August 23, 2012Publication date: February 28, 2013Applicant: DUNLOP SPORTS CO., LTD.Inventors: Kazuyoshi SHIGA, Ryo MURAKAMI, Toshiyuki TARAO, Takahiro SHIGEMITSU
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Publication number: 20130053175Abstract: An object of the present invention is to provide a golf ball polyurethane 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 polyurethane composition comprising, as a resin component, a polyurethane elastomer including a polyisocyanate with at least two alicyclic hydrocarbon structures having 3 or more carbon atoms as a constituting component, and having a storage modulus E? (Pa) and a loss modulus E? (Pa) satisfying a following expression; log(E?/E?2)??6.08 when measured in a tensile mode using a dynamic viscoelasticity measuring apparatus.Type: ApplicationFiled: August 23, 2012Publication date: February 28, 2013Applicant: DUNLOP SPORTS CO., LTD.Inventors: Kazuyoshi SHIGA, Ryo MURAKAMI, Toshiyuki TARAO, Takahiro SHIGEMITSU
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Publication number: 20130053184Abstract: An object of the present invention is to provide a golf ball polyurethane 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 polyurethane composition comprising, as a resin component, a polyurethane elastomer including a polyisocyanate with one alicyclic hydrocarbon structure having 3 or more carbon atoms as a constituting component, and having a spin-lattice relaxation time (T1) of 13C nucleus of 8.9 seconds or less measured by a High resolution solid state nuclear magnetic resonance (NMR) method.Type: ApplicationFiled: August 23, 2012Publication date: February 28, 2013Applicant: DUNLOP SPORTS CO., LTD.Inventors: Kazuyoshi SHIGA, Ryo MURAKAMI, Toshiyuki TARAO, Takahiro SHIGEMITSU
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Publication number: 20130012335Abstract: An object of the present invention is to provide a soft golf ball resin composition excellent in the shot feeling and resilience. The present invention provides a golf ball resin composition comprising: (A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) a binary ionomer resin, (a-3) a ternary copolymer, and (a-4) a ternary ionomer resin, (B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof; and (C) 0 part to 200 parts by mass of a basic inorganic metal compound. The golf ball of the present invention comprises a constituent member formed from the golf ball resin composition.Type: ApplicationFiled: July 6, 2012Publication date: January 10, 2013Applicant: DUNLOP SPORTS CO., LTD.Inventors: Kazuyoshi SHIGA, Ryo MURAKAMI
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Publication number: 20120165119Abstract: The present invention provides a golf ball resin composition comprising (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer, (a-3) a ternary copolymer composed of an olefin, an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms and an ?,?-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer; and (B) an anionic surfactant containing sulfur. The present invention further provides a golf ball comprising a constituting member formed from the above golf ball resin composition.Type: ApplicationFiled: November 23, 2011Publication date: June 28, 2012Inventors: Ryo Murakami, Kazuyoshi Shiga, Takahiro Shigemitsu
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Publication number: 20120165120Abstract: 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: ApplicationFiled: November 23, 2011Publication date: June 28, 2012Inventors: Kazuyoshi SHIGA, Ryo Murakami, Hideaki Kimura, Tomoka Kitago, Takahiro Shigemitsu
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Publication number: 20120165121Abstract: 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 golf ball resin composition of the present invention is characterized in that a storage modulus E? (Pa) and a loss modulus E? (Pa) satisfy a following expression; log(E?/E?2)??6.08 when measured at the conditions of the temperature of 12° C., the oscillation frequency of 10 Hz, and a strain of 0.05% in a tensile mode using a dynamic viscoelasticity measuring apparatus.Type: ApplicationFiled: November 23, 2011Publication date: June 28, 2012Inventors: Kazuyoshi SHIGA, Ryo MURAKAMI, Takahiro SHIGEMITSU
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Patent number: 8105446Abstract: Disclosed are a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites of the 2-14-1 phase, and alloy flakes for a rare earth sintered magnet obtained by the method. A rare earth sintered magnet employing the alloy flakes is also disclosed.Type: GrantFiled: April 8, 2010Date of Patent: January 31, 2012Assignee: Santoku CorporationInventors: Kazumasa Shintani, Ryo Murakami, Kazuhiko Yamamoto
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Publication number: 20100200121Abstract: The invention provides a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites of the 2-14-1 phase, which inhibits formation of chill, and which produces flakes that are pulverized into powder of a uniform particle size in the pulverization step in the production of a rare earth sintered magnet, and that are pulverized into powder compactable into a product with a controlled shrink ratio, and alloy flakes for a rare earth sintered magnet obtained by the method, and a rare earth sintered magnet having excellent magnetic properties.Type: ApplicationFiled: April 8, 2010Publication date: August 12, 2010Applicant: SANTOKU CORPORATIONInventors: Kazumasa Shintani, Ryo Murakami, Kazuhiko Yamamoto
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Patent number: 7722726Abstract: The invention provides a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites of the 2-14-1 phase, which inhibits formation of chill, and which produces flakes that are pulverized into powder of a uniform particle size in the pulverization step in the production of a rare earth sintered magnet, and that are pulverized into powder compactable into a product with a controlled shrink ratio, and alloy flakes for a rare earth sintered magnet obtained by the method, and a rare earth sintered magnet having excellent magnetic properties.Type: GrantFiled: March 31, 2005Date of Patent: May 25, 2010Assignee: Santoku CorporationInventors: Kazumasa Shintani, Ryo Murakami, Kazuhiko Yamamoto
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Publication number: 20090277793Abstract: [Object] To provide a nanocarbon/aluminum composite material having high strength and electrical conductivity for suitable use in a lead wire, a heat exchanger and an automotive part and a process for producing the nanocarbon/aluminum composite material. [Solution] There is provided a plating liquid for nanocarbon/aluminum composite production, comprising an aluminum halide, nanocarbon and 1,3-dialkylimidazolium halide and/or the like, wherein the molar ratio of the aluminum halide to the 1,3-dialkylimidazolium halide and/or the like is in the range of 20:80 to 80:20 and the 1,3-dialkylimidazolium halide and/or the like has an alkyl group with a carbon number of 1 to 12. There are also provided a nanocarbon/aluminum composite production process comprising forming a plating film on a substrate surface by electrolysis of the plating liquid in a dry, oxygen-free atmosphere with the passage of a direct current etc. under the electrolysis conditions of a bath temperature of 0 to 300° C. and a current density of 0.Type: ApplicationFiled: June 16, 2006Publication date: November 12, 2009Inventors: Atsushi Ehira, Ryo Murakami, Nobuyuki Koura, Koichi Ui, Takashi Yatsushiro