Golf ball

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United States of America Patent

PATENT NO 9993692
SERIAL NO

14902173

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A golf ball includes a spherical core, a mid layer, an inner cover, and an outer cover. A hardness Hm of the mid layer is greater than a hardness Hinc of the inner cover which is greater than a hardness Houc of the outer cover. A difference (Hm−Houc) is greater than 25. A volume Vm of the mid layer is greater than a volume Vinc of the inner cover which is greater than a volume Vouc of the outer cover. A ratio [(Vm+Vinc+Vouc)/V] of a sum (Vm+Vinc+Vouc) relative to a volume V of an entirety of the golf ball is less than 0.30. A ratio (Vm/Vouc) is greater than 1.50. A product (Vm*Hm) and a product (Vouc*Houc) meet the following relationship: [(Vm*Hm)/(Vouc*Houc)]>3.0.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO RUBBER INDUSTRIES LTDKOBE-SHI HYOGO 651-0072

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Isogawa, Kazuhiko Kobe, JP 94 669
Tachibana, Kosuke Kobe, JP 47 224

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