Golf club head
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Dec 25, 2007
Issued Date -
N/A
app pub date -
Apr 11, 2005
filing date -
Apr 20, 2004
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A golf club head comprises a metallic main body provided with an opening, and a FRP part covering the opening. The FRP part has a layered structure comprising a plurality of layers each made of a resinous material reinforced with fibers, wherein the layers include a high-loss-tangent layer whose resinous material has a loss tangent tan .delta.a of from 0.5 to 3.0.
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