Patent ID: 7367902

Claim:
A golf ball comprising a core, a cover of at least one layer that encloses the core, and a plurality of dimples on an outermost layer of the cover, the ball being characterized by containing in at least one constituent element thereof from 0.5 to 30 parts by weight of one or more rare-earth oxide composed of a single rare-earth element, or a rare-earth mixed oxide composed of a plurality of rare-earth elements mixed in a desired ratio, per 100 parts by weight of a base resin wherein the rare-earth oxide or rare-earth mixed oxide is included within an outermost cover layer made of a thermoplastic or thermoset resin and wherein the thermoplastic resin has a melt flow index of at least 0.5 g/10 min, a Shore D hardness of at least 40, and a rebound resilience according to JIS-K 7311 of at least 30%.