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:
May. 11, 2004
Filed:
Feb. 14, 2003
Applicant:
Inventors:
Assignee:
Shinko Electric Industries Co., Ltd., Nagano, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 2/802 ; B32B 1/500 ;
U.S. Cl.
CPC ...
B21D 2/802 ; B32B 1/500 ;
Abstract
There are provided a step of forming a structure in which a first concave portion is formed in a predetermined portion on one surface of a metal plate and also a convex portion that protrudes from other surface of the metal plate is formed by formation of the first concave portion and a second concave portion is formed in a predetermined portion on an outside of a peripheral portion of the convex portion, by shaping the metal plate by means of stamping using a die, and a step of cutting the convex portion formed on the other surface of the metal plate.