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:
Jun. 12, 2007
Filed:
Oct. 29, 2003
Applicants:
Masaru Sakuma, Yokohama, JP;
Youji Ito, Tsubame, JP;
Inventors:
Masaru Sakuma, Yokohama, JP;
Youji Ito, Tsubame, JP;
Assignees:
Dymco Limited, , JP;
K.K. Endo Seisakusho, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25F 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circular-shaped metal structure is fabricated by plastic-working and has a wall thickness in the range of 0.03 mm to 0.09 mm both inclusive. A film composed of one of (a) silicon and fluorocarbon resin and (b) copper is coated on a surface of the circular-shaped metal structure.