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:
Nov. 19, 2013
Filed:
Nov. 03, 2010
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
The invention provides a multi-piece solid golf ball composed of a solid core encased by a cover of one or more layer, which solid core has an inner core layer and an outer core layer. The inner core layer is formed primarily of a specific, highly neutralized, ionomeric resin composition, has a diameter of from 10 to 38 mm, and has a cross-sectional hardness difference of within ±5 between any two points on a cross-section formed by cutting the inner core layer in half. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 30 to 42 mm. The sum of the hardnesses at the center of the inner core layer and at the surface of the outer core layer is set to a value in a range of from 130 to 170. Such a golf ball is able to achieve an increased distance.