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公开(公告)号：US20240278079A1
公开(公告)日：2024-08-22
申请号：US18439160
申请日：2024-02-12
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Takumi KANEKO , Hikaru NAGAKURA , Takehiko HYODO , Kazuyoshi SHIGA
IPC: A63B37/00
CPC classification number: A63B37/0051 , A63B37/0064 , A63B37/0065 , A63B37/0073 , A63B37/008
Abstract: An object of the present disclosure is to provide a golf ball having a great change in an initial velocity associated with a change in a swing speed. The present disclosure provides a golf ball comprising a constituent member, wherein at least a part of the constituent member is formed of a cured product of a rubber composition comprising (a) a base rubber containing a natural rubber, (b) a co-crosslinking agent containing methacrylic acid and/or a metal salt thereof and (c) a crosslinking initiator.
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公开(公告)号：US20230024062A1
公开(公告)日：2023-01-26
申请号：US17847785
申请日：2022-06-23
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Takehiko HYODO , Yuko KUJIRAI , Kazuyoshi SHIGA
Abstract: An adhesive for a tennis ball of the present disclosure includes base rubber and a filler. The base rubber contains, as a main component thereof, liquid rubber having a number average molecular weight of not less than 10,000. The filler has an average nitrogen specific surface area of not less than 40 m2/g. A tennis ball of the present disclosure includes a hollow core made of a rubber material. The core includes two hemispherical half cores. The two half cores are adhered to each other by using the adhesive for a tennis ball.
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公开(公告)号：US20240278080A1
公开(公告)日：2024-08-22
申请号：US18438957
申请日：2024-02-12
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Hikaru NAGAKURA , Takumi KANEKO , Takehiko HYODO , Kazuyoshi SHIGA
CPC classification number: A63B37/0063 , A63B37/00622 , A63B37/0073 , A63B37/008 , A63B37/0087 , C08L9/00 , A63B37/0074 , A63B37/0075 , C08L2205/03
Abstract: An object of the present disclosure is to provide a novel golf ball aiming at realization of a sustainable and better society and having a low spin rate on driver shots. The present disclosure provides a golf ball comprising a spherical constituent member, wherein the spherical constituent member is formed from a rubber composition containing (a) a rubber component containing a natural rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator, and (d) an organic sulfur compound, a surface hardness (Hs) of the spherical constituent member is 75 or more in Shore C hardness, a hardness difference (Hs−H75) between the surface hardness (Hs) of the spherical constituent member and a hardness (H75) at a 75% point of a radius of the spherical constituent member from a center of the spherical constituent member is 3 or more and 10 or less in Shore C hardness, and a hardness difference (Hs−Ho) between the surface hardness (Hs) and a center hardness (Ho) of the spherical constituent member is 16 or more in Shore C hardness.
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公开(公告)号：US20220275257A1
公开(公告)日：2022-09-01
申请号：US17625389
申请日：2020-07-27
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Takehiko HYODO , Masanori TAGUCHI , Hiroaki TANAKA , Fumiya SUZUKI , Kunio NIWA , Kazuyoshi SHIGA , Yuko SAKURAI , Kohei MIMURA
Abstract: An aqueous adhesive for rubber includes rubber latex and an ammonium-salt-based vulcanization acceleration aid. An amount of the ammonium-salt-based vulcanization acceleration aid contained in the aqueous adhesive is preferably not less than 0.01% by weight and not greater than 5.0% by weight in terms of solid content. An aqueous adhesive for a ball includes rubber latex as a main component. A content of an inorganic filler in the aqueous adhesive is not greater than 0.1% by weight in terms of solid content. A ball 2 includes a hollow core 4 obtained by crosslinking a rubber composition that contains a vulcanizing agent. The core 4 is formed of two hemispherical half cores. The two half cores are adhered to each other by using the aqueous adhesive for a ball.
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公开(公告)号：US20190127560A1
公开(公告)日：2019-05-02
申请号：US16160527
申请日：2018-10-15
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Takehiko HYODO , Masanori TAGUCHI , Kazuyoshi SHIGA , Fumiya SUZUKI , Hiroaki TANAKA , Kunio NIWA
Abstract: A rubber composition for a hollow ball includes a base rubber and an inorganic filler. A weight reduction rate TGA650 from room temperature to 650° C. and a weight reduction rate TGA850 from room temperature to 850° C. of the rubber composition are measured under an air atmosphere by thermogravimetry conforming to JIS K0129. The weight reduction rate TGA650 of the rubber composition is not less than 63% and not greater than 99%. A difference (TGA850−TGA650) between the weight reduction rates TGA850 and TGA650 of the rubber composition is not less than 0% and not greater than 7%. A hollow ball 2 includes a hollow core 4 formed from the rubber composition.
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Patent Agency Ranking
公开(公告)号：US20240390738A1
公开(公告)日：2024-11-28
申请号：US18633839
申请日：2024-04-12
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Yasuo NAITO , Masayuki ONISHI , Kazuyoshi SHIGA , Hiroaki TANAKA , Takehiko HYODO
IPC: A63B37/00 , C09D175/08
Abstract: An object of the present disclosure is to provide a novel golf ball having excellent spin performance on approach shots. The present disclosure provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein at least one layer of the paint film contains a polyurethane as a resin component, the polyurethane is obtained by a reaction between a polyol composition containing a polyol and a polyisocyanate composition containing a polyisocyanate, and the polyol composition contains, as a polyol component, a urethane polyol having a structural unit derived from a polyether polycarbonate diol.
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公开(公告)号：US20240278083A1
公开(公告)日：2024-08-22
申请号：US18442454
申请日：2024-02-15
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Takumi KANEKO , Hikaru NAGAKURA , Takehiko HYODO , Kazuyoshi SHIGA , Yuko KUJIRAI , Hiroaki TANAKA
CPC classification number: A63B37/0073 , A63B37/0078 , A63B37/008 , A63B37/0087 , C08L7/00 , C08L9/00 , C08L2205/025 , C08L2205/035 , C08L2312/00
Abstract: An object of the present disclosure is to provide a golf ball having lowered resilience while maintaining the hardness of the golf ball. The present disclosure provides a golf ball comprising a constituent member, wherein at least a part of the constituent member is formed from a cured product of a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent and (c) a crosslinking initiator, (a) the base rubber contains (a1) a natural rubber and a grafting ratio of (b) the co-crosslinking agent in the cured product of the rubber composition ranges from 40 mass % to 80 mass %.
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公开(公告)号：US20180078834A1
公开(公告)日：2018-03-22
申请号：US15558136
申请日：2016-04-27
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD. , GIFU UNIVERSITY
Inventor： Takehiko HYODO , Yumi KANEMITSU , Asami NAKAI , Akio OHTANI , Tadashi UOZUMI
CPC classification number: A63B53/10 , A63B60/08 , A63B2209/02 , B29C70/32 , B29C70/56 , B29L2031/5227
Abstract: To provide a lightweight shaft having excellent strength, a shaft has one or a plurality of fiber reinforced resin layers. At least one of the fiber reinforced resin layers is produced by a filament winding method in which one or a plurality of fiber bundles are wound while tension is applied thereto. The fiber bundles each include a plurality of filaments. The tension applied to the fiber bundles is not less than 0.04 (gf) per filament. The tension is great. Preferably, at least one of the fiber reinforced resin layers is produced by a multi-filament winding method in which a plurality of the fiber bundles are simultaneously wound while being arranged side by side. Preferably, fibers forming the filaments are carbon fibers. Preferably, a resin composition included in each fiber reinforced resin layer is an epoxy resin composition.
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公开(公告)号：US20140203497A1
公开(公告)日：2014-07-24
申请号：US14148405
申请日：2014-01-06
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Akihiro MINE , Toshihiro TAMURA , Takehiko HYODO
CPC classification number: B65H3/0638 , B65H3/52 , B65H2401/111 , B65H2401/212
Abstract: A sheet feeding member is provided, which is made of a thermoplastic elastomer composition comprising: a base polymer including a polyurethane thermoplastic elastomer and a polyester thermoplastic elastomer; and at least one ion conductive agent selected from the group consisting of a quaternary ammonium salt and a lithium salt/polyol, wherein the ion conductive agent is present in a proportion of 0.2 to 4 parts by mass based on 100 parts by mass of the base polymer in the thermoplastic elastomer composition.
Abstract translation: 提供了由热塑性弹性体组合物制成的片材进给构件，其包括：包含聚氨酯热塑性弹性体和聚酯热塑性弹性体的基础聚合物; 和选自季铵盐和锂盐/多元醇的至少一种离子导电剂，其中离子导电剂相对于100质量份的碱为0.2〜4质量份 热塑性弹性体组合物中的聚合物。
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公开(公告)号：US20230027197A1
公开(公告)日：2023-01-26
申请号：US17849436
申请日：2022-06-24
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Takehiko HYODO , Yuko KUJIRAI , Kazuyoshi SHIGA
IPC: C09J109/00 , A63B39/00
Abstract: An adhesive for a tennis ball includes base rubber. The base rubber contains, as a main component thereof, liquid rubber having a number average molecular weight of not less than 10,000. The adhesive has a shear viscosity of not greater than 2,000 Pa·s. A tennis ball includes a hollow core made of a rubber material. The core includes two hemispherical half cores. The two half cores are adhered to each other by using the adhesive for a tennis ball.
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