ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,147, issued on Sept. 23, was assigned to Acushnet Co. (Fairhaven, Mass.).

"Multi-layer golf balls with improved interlayer adhesion" was invented by Michael Michalewich (Norton, Mass.) and Shawn Ricci (New Bedford, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Casing compositions including carboxyl groups, cover compositions including hydroxyl groups and an adhesion promoter capable of crosslinking carboxyl and hydroxyl groups, and golf balls made from such compositions that have crosslinks between carboxyl groups in the casing composition and hydroxyl groups in the cover composition. The type and concentration of the components in the casin...