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. 16, 2013
Filed:
Jul. 08, 2005
Seiichiro Endo, Kobe, JP;
Masatoshi Yokota, Kobe, JP;
Seiichiro Endo, Kobe, JP;
Masatoshi Yokota, Kobe, JP;
Dunlop Sports Co. Ltd., Kobe-shi, JP;
Abstract
Golf ballhas a spherical core, a mid layercovering this core, a reinforcing layercovering this mid layer, and a covercovering this reinforcing layer. Base polymer of the mid layerincludes an ionomer resin as a principal component. The mid layerhas a hardness Hm as measured with a Shore D type hardness scale of equal to or greater than 55. Base polymer of the reinforcing layeris a thermosetting resin. Base polymer of the coverincludes a thermoplastic polyurethane elastomer as a principal component. The coverhas a thickness Tc of equal to or less than 0.6 mm. The cover has a hardness Hc as measured with a Shore D type hardness scale of equal to or less than 54. Ratio (Tr/Tc) of the thickness Tr of the reinforcing layer to the thickness Tc of the cover is 0.005 or greater and 3.0 or less.