The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2009
Filed:
Jun. 09, 2006
Applicant:
Tomio Kumamoto, Hyogo, JP;
Inventor:
Tomio Kumamoto, Hyogo, JP;
Assignee:
SRI Sports Limited, Kobe-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B 53/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A golf club shaft composed of a laminate of prepregs each containing a matrix resin and reinforcing fibers impregnated with the matrix resin. The matrix resin of at least one of the prepregs contains a fullerene or/and a fullerene compound. The content of the fullerene or/and the fullerene compound contained in the prepreg is set to not less than 0.002 wt % nor more than 1 wt % of an entire weight of the prepreg. The length of the prepreg containing the fullerene or/and the fullerene compound is set to not less than 2% nor more than 90% of the full length of the golf club shaft.