Invention Grant
- Patent Title: Golf ball
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Application No.: US16586368Application Date: 2019-09-27
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Publication No.: US10940368B2Publication Date: 2021-03-09
- Inventor: Hikaru Nagakura , Kai Hayashi , Kazuyoshi Shiga , Takahiro Shigemitsu
- Applicant: Sumitomo Rubber Industries, Ltd.
- Applicant Address: JP Kobe
- Assignee: Sumitomo Rubber Industries, Ltd.
- Current Assignee: Sumitomo Rubber Industries, Ltd.
- Current Assignee Address: JP Kobe
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2018-185318 20180928
- Main IPC: A63B37/06
- IPC: A63B37/06 ; A63B37/00 ; C08L9/00

Abstract:
An object of the present invention is to provide a golf ball having excellent shot feeling on driver shots. The present invention provides a golf ball comprising a core and at least one cover covering the core, wherein a material for forming the core has a loss tangent difference Δ tan δ (tan δ−80−tan δ−40) of 0.12 or more between a loss tangent tan δ−80 at −80° C. and a loss tangent tan δ−40 at −40° C.
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