Patents by Inventor Rinya Takesue
Rinya Takesue 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: 6797786Abstract: A golf ball material containing (a) a calcium ion-neutralized olefin-unsaturated carboxylic acid-unsaturated carboxylate random copolymer having an acid content of 2-12% by weight, and (b) a calcium ion-neutralized olefin-unsaturated carboxylic acid random copolymer having an acid content of 8-15% by weight, in a weight ratio from 100:0 to 40:60, and having a Shore D hardness of 30-60 is effectively moldable and is capable of providing golf balls with excellent rebound energy and a pleasant feel when hit.Type: GrantFiled: May 14, 2003Date of Patent: September 28, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Rinya Takesue, Yasush Ichikawa
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Publication number: 20040176190Abstract: In a solid golf ball comprising an elastic solid core and a resin cover, the cover has a JIS-C hardness of 50-85, and provided that the ball receives a spin rate S1 (rpm) in the dry state and a spin rate S2 (rpm) in the wet state when hit with a short iron having a loft of an 8-iron or greater, the percent spin retention: (S2/S1)×100 is at least 47%. The ball's spin susceptibility when hit with the short iron is not reduced in the dry state or fine weather, nor is noticeably reduced even in the wet state or rain weather. The ball has so high performance that the ball travels a distance as intended, immediately stops on the green, is easy to control and thus, suited for professional and amateur low-handicap golfers.Type: ApplicationFiled: March 17, 2004Publication date: September 9, 2004Applicant: BRIDGESTONE SPORTS CO., LTD.Inventors: Hiroshi Higuchi, Hirotaka Shimosaka, Junji Umezawa, Yasushi Ichikawa, Rinya Takesue
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Patent number: 6786840Abstract: Disclosed herein is a two piece solid golf ball consisting of a solid core and a cover, said solid core being formed from a rubber composition composed of a rubber base material of polybutadiene synthesized by using a catalyst of rare earth element, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound, and an inorganic filler, and said cover being formed mainly from a mixture of a block copolymer having amino groups at terminals and an ionomer resin. The two-piece solid golf ball is by far superior to conventional ones in flying performance, cover durability, scuff resistance, and soft shot feeling.Type: GrantFiled: November 25, 2003Date of Patent: September 7, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Junji Hayashi, Yasumasa Shimizu, Hiroshi Higuchi, Rinya Takesue
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Patent number: 6786839Abstract: In a multi-piece solid golf ball comprising a solid core, a mantle and a cover, the solid core is made of a rubber composition that includes (A) a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, (B) a small amount of organic peroxide, (C) an unsaturated carboxylic acid and/or a metal salt thereof, (D) an organic sulfur compound and (E) an inorganic filler. The mantle is made of a thermoplastic resin composition. The cover is made of a material composed of a heated mixture of (F) an olefin/unsaturated carboxylic acid copolymer, an olefin/unsaturated carboxylic acid/unsaturated carboxylic acid ester copolymer, or a metal ion neutralization product thereof, (G) a polyurethane elastomer, and (H) an organic or inorganic basic compound. This construction provides the golf ball with an outstanding flight performance, excellent scuff resistance and a soft feel on impact, and minimizes the decline in rebound by the ball at low temperature.Type: GrantFiled: November 25, 2003Date of Patent: September 7, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Junji Hayashi, Yasumasa Shimizu, Hiroshi Higuchi, Rinya Takesue
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Patent number: 6764415Abstract: Disclosed is a process for producing a golf ball having a cover formed from a thermoplastic polyurethane material which can be recycled for molding, which exhibits high restitution, and which exhibits excellent scuff resistance. The production process includes preparing a cover-forming material (C) by incorporating the following component (B) into the following component (A); and subjecting the cover-forming material (C) to injection molding, to thereby form a cover around the core: (A) a thermoplastic polyurethane material, and (B) an isocyanate mixture in which an isocyanate compound (b-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic resin (b-2) which is substantially non-reactive with the isocyanate groups.Type: GrantFiled: May 6, 2002Date of Patent: July 20, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Yasushi Ichikawa, Rinya Takesue
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Publication number: 20040138010Abstract: Disclosed is a golf ball having a cover formed from a thermoplastic polyurethane material which can be recycled for molding, which exhibits high restitution, and which exhibits excellent scuff resistance.Type: ApplicationFiled: November 25, 2003Publication date: July 15, 2004Applicant: BRIDGESTONE SPORTS CO., LTD.Inventors: Yasushi Ichikawa, Rinya Takesue, Hiroyuki Nagasawa
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Patent number: 6761648Abstract: In a golf ball comprising a core and a cover of one or more layers, the cover or its layer is formed primarily of a mixture comprising a blend of (a) an ionomer resin in the form of a divalent metal-neutralized ethylene-acrylic acid copolymer and (b) an olefin-unsaturated carboxylic acid copolymer or an olefin-unsaturated carboxylic acid-unsaturated carboxylate copolymer, (c) a thermoplastic elastomer, (d) a fatty acid or derivative thereof having a molecular weight of 280 to 1,500, and (e) a basic metal compound. The mixture is thermally stable, flowable and easy to mold and the ball has improved rebound, feel and durability.Type: GrantFiled: May 29, 2003Date of Patent: July 13, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Rinya Takesue, Yasushi Ichikawa
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Patent number: 6750299Abstract: Disclosed is a golf ball having a cover formed from a thermoplastic polyurethane material which can be recycled for molding, which exhibits high restitution, and which exhibits excellent scuff resistance and discoloration resistance. The cover is formed from a composition (C) containing, as predominant components, the following components (A) and (B): (A) a polyurethane material mixture of a thermoplastic polyurethane material (a-1) and dicyclohexyl-4,4′-methane diisocyanate (a-2), and (B) an isocyanate mixture in which an isocyanate compound (b-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic resin (b-2) which is substantially non-reactive with the isocyanate groups.Type: GrantFiled: May 7, 2002Date of Patent: June 15, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Yasushi Ichikawa, Rinya Takesue
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Publication number: 20040110577Abstract: Disclosed herein is a two-piece solid golf ball consisting of a solid core and a cover, the solid core being formed from a rubber composition composed of a rubber base material of polybutadiene synthesized by using a catalyst of rare earth element, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound, and an inorganic filler, and the cover being formed mainly from a mixture of an ionomer-containing resin composition and an inorganic filler. The two-piece solid golf ball is by far superior to conventional ones in flying performance, cover durability, scuff resistance, and shot feeling.Type: ApplicationFiled: November 25, 2003Publication date: June 10, 2004Applicant: BRIDGESTONE SPORTS CO., LTD.Inventors: Junji Hayashi, Yasumasa Shimizu, Hiroshi Higuchi, Rinya Takesue
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Patent number: 6747100Abstract: Disclosed is a golf ball having a cover formed from a thermoplastic polyurethane material which can be recycled for molding, which exhibits high restitution, and which exhibits excellent scuff resistance. The cover is formed from a composition (C) containing, as predominant components, the following components (A) and (B): (A) a thermoplastic polyurethane material, and (B) an isocyanate mixture in which an isocyanate compound (b-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic resin (b-2) which is substantially non-reactive with the isocyanate groups.Type: GrantFiled: May 6, 2002Date of Patent: June 8, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Yasushi Ichikawa, Rinya Takesue
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Patent number: 6746345Abstract: In a multi-piece solid golf ball comprising a solid core and a cover of two inner and outer layers enclosing the solid core, the solid core has a deflection of at least 1.Type: GrantFiled: July 18, 2001Date of Patent: June 8, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Hiroshi Higuchi, Hirotaka Shimosaka, Yasushi Ichikawa, Rinya Takesue
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Patent number: 6746347Abstract: In a solid golf ball comprising an elastic solid core and a resin cover, the cover has a JIS-C hardness of 50-85, and provided that the ball receives a spin rate S1 (rpm) in the dry state and a spin rate S2 (rpm) in the wet state when hit with a short iron having a loft of an 8-iron or greater, the percent spin retention: (S2/S1)×100 is at least 47%. The ball's spin susceptibility when hit with the short iron is not reduced in the dry state or fine weather, nor is noticeably reduced even in the wet state or rain weather. The ball has so high performance that the ball travels a distance as intended, immediately stops on the green, is easy to control and thus, suited for professional and amateur low-handicap golfers.Type: GrantFiled: December 20, 2001Date of Patent: June 8, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Hiroshi Higuchi, Hirotaka Shimosaka, Junji Umezawa, Yasushi Ichikawa, Rinya Takesue
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Publication number: 20040106470Abstract: In a multi-piece solid golf ball comprising a solid core, a mantle and a cover, the solid core is made of a rubber composition that includes a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound and an inorganic filler. The mantle is made of a thermoplastic resin composition. The cover is made primarily of a mixture containing an amino-terminated block polymer and an ionomer resin. This construction provides the golf ball with a combination of outstanding flight performance, excellent scuff resistance and soft feel that is unprecedented.Type: ApplicationFiled: November 25, 2003Publication date: June 3, 2004Applicant: BRIDGESTONE SPORTS CO., LTD.Inventors: Junji Hayashi, Yasumasa Shimizu, Hiroshi Higuchi, Rinya Takesue
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Publication number: 20040106471Abstract: In a multi-piece solid golf ball comprising a solid core, a mantle and a cover, the solid core is made of a rubber composition that includes (A) a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, (B) a small amount of organic peroxide, (C) an unsaturated carboxylic acid and/or a metal salt thereof, (D) an organic sulfur compound and (E) an inorganic filler. The mantle is made of a thermoplastic resin composition. The cover is made of a material composed of a heated mixture of (F) an olefin/unsaturated carboxylic acid copolymer, an olefin/unsaturated carboxylic acid/unsaturated carboxylic acid ester copolymer, or a metal ion neutralization product thereof, (G) a polyurethane elastomer, and (H) an organic or inorganic basic compound. This construction provides the golf ball with an outstanding flight performance, excellent scuff resistance and a soft feel on impact, and minimizes the decline in rebound by the ball at low temperature.Type: ApplicationFiled: November 25, 2003Publication date: June 3, 2004Applicant: BRIDGESTONE SPORTS CO., LTD.Inventors: Junji Hayashi, Yasumasa Shimizu, Hiroshi Higuchi, Rinya Takesue
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Publication number: 20040106478Abstract: In a multi-piece solid golf ball comprising a solid core, a mantle and a cover, the solid core is made of a rubber composition comprising a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound and an inorganic filler. The mantle is made of a thermoplastic resin composition. The cover is made primarily of a mixture of an ionomer resin-containing resin composition and an inorganic filler. This construction provides the golf ball with a combination of outstanding flight performance and soft feel with cover's scuff resistance and crack durability, that is unprecedented.Type: ApplicationFiled: November 25, 2003Publication date: June 3, 2004Applicant: BRIDGESTONE SPORTS CO., LTD.Inventors: Junji Hayashi, Yasumasa Shimizu, Hiroshi Higuchi, Rinya Takesue
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Publication number: 20040106472Abstract: Disclosed herein is a two-piece solid golf ball consisting of a solid core and a cover, said solid core being formed from a rubber composition composed of a rubber base material of polybutadiene synthesized by using a catalyst of rare earth element, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound, and an inorganic filler, and said cover being formed mainly from a mixture of a block copolymer having amino groups at terminals and an ionomer resin. The two-piece solid golf ball is by far superior to conventional ones in flying performance, cover durability, scuff resistance, and soft shot feeling.Type: ApplicationFiled: November 25, 2003Publication date: June 3, 2004Applicant: BRIDGESTONE SPORTS CO., LTD.Inventors: Junji Hayashi, Yasumasa Shimizu, Hiroshi Higuchi, Rinya Takesue
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Publication number: 20040106736Abstract: A golf ball comprising a core and two or more outer layers covering said core, wherein the first outer layer is formed mainly from a mixture of a non-ionomer thermoplastic elastomer and an isocyanate compound and the second outer layer is formed mainly from a mixture composed of a resin component consisting of an ionomer resin and a non-ionomer thermoplastic elastomer, a fatty acid and/or a derivative thereof, a metal ion source capable of neutralizing unneutralized acid radicals in the above-mentioned components, and a compound having two or more reactive functional groups and a molecular weight no larger than 20,000, with the first outer layer being contiguous to the second outer layer, which exhibits superior in durability and rebound resilience.Type: ApplicationFiled: November 25, 2003Publication date: June 3, 2004Applicant: BRIDGESTONE SPORTS CO., LTD.Inventors: Rinya Takesue, Yasushi Ichikawa, Hiroyuki Nagasawa
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Patent number: 6736737Abstract: In a multi-piece solid golf ball comprising a rubbery elastic solid core and a resin cover including at least an inner layer, an intermediate layer and an outer layer, the solid core undergoes a deflection of 1.6-6.0 mm under an applied load of 294 N (30 kgf), the cover inner layer has a Shore D hardness of 55-70, the cover intermediate layer has a Shore D hardness of 8-50 and a gage of 0.1-1.2 mm, and the cover outer layer has a Shore D hardness of 40-55. The ball prevents any undesired increase of spin upon driver shots without detracting from rebound, has good flight performance, and receives enough spin to facilitate control on short iron shots.Type: GrantFiled: December 20, 2001Date of Patent: May 18, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Hiroshi Higuchi, Hirotaka Shimosaka, Junji Umezawa, Atsuki Kasashima, Yasushi Ichikawa, Rinya Takesue
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Patent number: 6723008Abstract: In a multi-piece solid golf ball comprising a solid core and a cover of two inner and outer layers enclosing the solid core, the solid core has a deflection of at least 1.Type: GrantFiled: July 18, 2001Date of Patent: April 20, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Hiroshi Higuchi, Hirotaka Shimosaka, Yasushi Ichikawa, Rinya Takesue
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Patent number: 6716117Abstract: In a multi-piece solid golf ball comprising a solid core and a cover consisting of inner and outer layers, the cover inner layer is composed mainly of an ionomer resin, and the cover outer layer is composed mainly of another thermoplastic elastomer. A thermoplastic resin-base adhesive layer is interposed between the cover inner and outer layers, or a thermoplastic resin-base adhesive is blended in the inner and/or outer layer cover stock.Type: GrantFiled: November 7, 2001Date of Patent: April 6, 2004Assignee: Bridgestone Sports Co., Ltd.Inventors: Yasushi Ichikawa, Shunichi Kashiwagi, Rinya Takesue