US 12,440,731 B2
Golf ball core with tailored hardness gradient
Michael Michalewich, Norton, MA (US); and Doug Goguen, Lakeville, MA (US)
Assigned to Acushnet Company, Fairhaven, MA (US)
Filed by Acushnet Company, Fairhaven, MA (US)
Filed on Dec. 12, 2023, as Appl. No. 18/537,087.
Application 18/537,087 is a continuation of application No. 17/839,673, filed on Jun. 14, 2022, granted, now 11,844,983.
Prior Publication US 2024/0115906 A1, Apr. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A63B 37/06 (2006.01); A63B 37/00 (2006.01); C08L 9/00 (2006.01)
CPC A63B 37/0063 (2013.01) [A63B 37/0074 (2013.01); C08L 9/00 (2013.01); C08L 2205/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A golf ball, comprising:
a rubber layer comprising:
a rubber formulation comprising a base rubber and a hardening agent including a disubstituted benzoic compound having a first functional group and a second functional group, wherein the first functional group is meta to the second functional group; and
a cover layer disposed about the rubber layer.