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:
Mar. 09, 2021
Filed:
Sep. 27, 2019
Applicant:
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Inventors:
Hikaru Nagakura, Kobe, JP;
Kai Hayashi, Kobe, JP;
Kazuyoshi Shiga, Kobe, JP;
Takahiro Shigemitsu, Kobe, JP;
Assignee:
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B 37/06 (2006.01); A63B 37/00 (2006.01); C08L 9/00 (2006.01);
U.S. Cl.
CPC ...
A63B 37/0051 (2013.01); A63B 37/0074 (2013.01); A63B 37/0092 (2013.01); C08L 9/00 (2013.01); A63B 37/0053 (2013.01); A63B 37/0064 (2013.01); A63B 37/0075 (2013.01); A63B 37/0076 (2013.01); C08L 2205/03 (2013.01);
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−tan δ) of 0.12 or more between a loss tangent tan δat −80° C. and a loss tangent tan δat −40° C.