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:
Sep. 16, 2014
Filed:
Feb. 16, 2012
Rui Kondo, Niigata, JP;
Tamotsu Hasegawa, Niigata, JP;
Rui Kondo, Niigata, JP;
Tamotsu Hasegawa, Niigata, JP;
K. K. Endo Seisakusho, Tsubame-shi, JP;
Abstract
An iron golf club is one made of metal material, which is manufactured integrally through press working and gives dedication to improvement of golf club design. The head () has a concave portion () surrounded by a convex portion () in the backside portion () behind the face portion (). Treatment for making a mirror surface is applied to the bottom portion () of this concave portion through press working with a fixed die () having a surface roughness finer than the mirror surface for which treatment for making a mirror surface is to be performed and a movable die (). Press working of this bottom portion can be also performed through treatment for making a mirror surface with a liner member ().