Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 4, 2007
Patent Application Number
10998549
Date Filed
November 30, 2004
Patent Citations Received
0
Patent Primary Examiner
Patent abstract
A hollow golf club head comprises: a face portion whose front face defines a club face for hitting a ball; a crown portion intersecting the club face at the upper edge thereof; and a sole portion intersecting the club face at the lower edge thereof, wherein at least one of the sole portion and the crown portion is provided along the front edge thereof with a face-backing zone in which the rigidity is gradually increased from its toe-side end and heel-side end toward the center thereof.
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