IP Library Granted Patent US 7,976,412
Granted Patent B2
US 7,976,412 · App. 12/219,506 · Granted Jul 12, 2011

Golf ball

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Quick Facts
Patent No.
US 7,976,412
App. No.
12/219,506
Granted
Jul 12, 2011
Kind
B2
Abstract

Golf ball 2 has spherical core 4 , cover 6 positioned outside the core 4 , mark layer 8 and paint layer 10 . The resin composition of the cover 6 includes composite particles. The composite particle has a nucleus and a coat layer. The nucleus is constituted with aluminum oxide. The coat layer is constituted with titanium oxide. The composite particles are flaky. The amount of the composite particles is 0.1 parts by weight or more and 15 parts by weight or less per 100 parts by weight of the base resin of the cover 6 . The composite particles may be also dispersed in the paint layer 10 . The amount of the composite particles in the paint layer 10 is 1 part by weight or more and 30 parts by weight or less per 100 parts by weight of the base resin of the paint layer 10.

Claims (4)

1. A golf ball which comprises a core, a cover provided to cover the core, and a paint layer provided to cover the cover, wherein

the cover or the paint layer comprises composite particles having a nucleus, and a coat layer provided to coat the nucleus,

the nucleus is constituted with a metal oxide, and the coat layer comprises titanium oxide, and

the cover is constituted with a resin composition, and 0.1 parts by weight or more and 15 parts by weight or less composite particles are included per 100 parts by weight of a base resin of the resin composition.

Assignments (3)
MERGER Recorded Apr 17, 2018
From: DUNLOP SPORTS CO. LTD.
To: SUMITOMO RUBBER INDUSTRIES, LTD.
Reel/Frame 045959/0204 →
CHANGE OF NAME Recorded Apr 12, 2018
From: SRI SPORTS LIMITED
To: DUNLOP SPORTS CO. LTD.
Reel/Frame 045932/0024 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 23, 2008
From: ISOGAWA, KAZUHIKO; HIRAU, TSUTOMU
To: SRI SPORTS LIMITED
Reel/Frame 021334/0754 →