ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,465, issued on April 7, was assigned to Acushnet Co. (Fairhaven, Mass.).
"Golf balls having increased impact durability" was invented by Erin McDermott (Providence, R.I.) and Manjari Kuntimaddi (Raynham, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Golf balls having cores with increased hardness gradients and improved impact durability are provided. The cores have an increased "positive" hardness gradient (or a "hard-to-soft" hardness) where the outer surface of the core is harder than the center. The cores are formed from rubber formulations including combinations of a terpene-based resin, ethylene-propylene-diene (EPDM) rubber, and/or a wa...