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:
Feb. 19, 2008
Filed:
Jun. 20, 2003
Mitsuhiro Kishimi, Kyoto, JP;
Hiroshi Fukunaga, Suita, JP;
Mitsuhiro Kishimi, Kyoto, JP;
Hiroshi Fukunaga, Suita, JP;
Hitachi Maxell Ltd., Ibaraki-shi, JP;
Abstract
An electrode according to the present invention employs the metal plate having the specified structure as the electrode substrate. The metal platehas a plurality of protuberancesthat are alternately protruded on both front and back sides thereof. Each of the protuberancesis formed in a pyramid shape in which an area of upper bottom(a protruded part) thereof is smaller than that of a lower bottom. The upper bottomin each of the protuberancesis formed with an aperturehaving blanking burrblinked in a substantially pyramid shape along a direction from the upper bottomto the lower bottomso that an openingof the upper bottom part is formed in a polygon shape. Further, the size of each portions is set in accordance with c>s≧0.1 mmand 0.2≦h/d≦0.95 where c is the area of the upper bottom of each of the protuberances, s is the area of the openingof the upper bottom parts, h is the height of the blanking burrsis h, and d is the total thickness of the electrode substrate before compressing.