Patent ID: 7220191

Claim:
A high-strength golf ball, comprising: a core composed of a main core and, optionally, a sub-core having one or more layers; an interlayer having one or more layers formed on the outer surface of the core; and a cover having one or more layers formed on the outer surface of the interlayer; wherein at least one part of the core, the interlayer, and/or the cover contains at least one member selected from the group consisting of carbon nanotubes having a diameter of 0.8–70 nm and an L/D of 10–10000; carbon nanofibers having a diameter of more than 70 nm and not more than 200 nm and an L/D of 60–1000; cup-stacked-type carbon nanotubes having an outer diameter of 80–100 nm, an inner diameter of 50–70 nm, and an L/D of 10–5000; C 60 , C 70 , C 74 , C 76 , C 78 , C 80 , C 82 , C 84 and C 85 fullerenes; and hydrides, hydroxides, alkylates and halides of such fullerenes, wherein at least one part of the core contains at least one member selected from the group consisting of the carbon nanotubes, carbon nanofibers and cup-stacked-type carbon nanotubes, wherein at least one layer of the interlayer contains at least one member selected from the group consisting of the carbon nanotubes, carbon nanofibers and cup-stacked-type carbon nanotubes, wherein at least one layer of the cover contains at least one member selected from the group consisting of the carbon nanotubes, carbon nanofibers, cup-stacked-type carbon nanotubes, fullerenes, and hydrides, hydroxides, alkylates and halides of such fullerenes, in which the core contains at least one member selected from the group consisting of the carbon nanotubes, the interlayer contains at least one member selected from the group consisting of the carbon nanofibers, the cover contains at least one member selected from the group consisting of the fullerenes, and hydrides, hydroxides, alkylates and halides of such fullerenes.