The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2024
Filed:
Dec. 08, 2022
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Ayaka Shindo, Kobe, JP;
Takahiro Shigemitsu, Kobe, JP;
Kazuyoshi Shiga, Kobe, JP;
Toshiyuki Tarao, Kobe, JP;
Takanobu Kawamura, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe, JP;
Abstract
An object of the present disclosure is to provide a golf ball having good shot feeling and excellent durability and not having lowered resilience even if a hard cover material is used. The present disclosure provides a golf ball comprising a spherical core, and a cover disposed outside the spherical core and composed of one or more layers, wherein at least one cover layer contains (A) a base resin, and (B) at least one member selected from the group consisting of a polyrotaxane, a polyethylene oxide, a polypropylene oxide, a polycaprolactone and a liquid polymer, and Sa×Spc≥100 wherein Sa (μm) is an arithmetic mean roughness of a surface of a cut plane of the cover, and Spc (mm) is an arithmetic mean curvature of a summit of the surface of the cut plane of the cover.