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:
Sep. 16, 2014
Filed:
Mar. 23, 2011
Junji Umezawa, Saitamaken, JP;
Kae Iizuka, Saitamaken, JP;
Daisuke Arai, Saitamaken, JP;
Hiroshi Higuchi, Saitamaken, JP;
Junji Umezawa, Saitamaken, JP;
Kae Iizuka, Saitamaken, JP;
Daisuke Arai, Saitamaken, JP;
Hiroshi Higuchi, Saitamaken, JP;
Bridgestone Sports Co., Ltd., Tokyo, JP;
Abstract
A multi-piece solid golf ball composed of a solid core having an inner core layer and an outer core layer encased by a cover including at least an inner cover layer and an outer cover layer. The inner core layer has a JIS-C cross-sectional hardness of from 60 to 83 at any single point on a cross-section, and has a cross-sectional hardness difference between any two points on the cross-section of within ±5. The ball has specific relationships between the hardness of the inner core layer 1 mm inside a boundary between the inner core layer and the outer core layer, the hardness of the outer core layer 1 mm outside the boundary, and the surface hardness of the outer core layer. And, the outer cover layer has the specific thickness and Shore D hardness, which is higher than that of the inner cover layer.