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:
Dec. 23, 2014
Filed:
Mar. 04, 2011
Michael J. Sullivan, Old Lyme, CT (US);
Brian Comeau, Berkley, MA (US);
William B. Lacy, Plymouth, MA (US);
Michael J. Sullivan, Old Lyme, CT (US);
Brian Comeau, Berkley, MA (US);
William B. Lacy, Plymouth, MA (US);
Acushnet Company, Fairhaven, MA (US);
Abstract
A golf ball includes an inner core layer formed from a thermoplastic material comprising a highly-neutralized ionomer comprising a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer by 80% or greater. The inner core has a geometric center hardness less than its surface hardness to define a positive hardness gradient. An outer core layer is formed over the inner core and is formed from a substantially homogenous thermoset composition. The outer core layer has an interior hardness substantially less than an outer surface hardness to define a steep positive hardness gradient. An inner cover layer and an outer cover layer are formed over the outer core layer.