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. 08, 2007
Filed:
Dec. 16, 2003
Applicants:
Hideyuki Kurita, Kanuma, JP;
Masanao Watanabe, Kanuma, JP;
Inventors:
Hideyuki Kurita, Kanuma, JP;
Masanao Watanabe, Kanuma, JP;
Assignees:
Sony Corporation, Tokyo, JP;
Sony Chemical & Information Device Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01K 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A double-sided flexible printed board is manufactured by: (a) forming a polyimide precursor layer on a metal layer; (b) forming an upper circuit layer on the polyimide precursor layer by a semi-additive technique; and (c) imidating the polyimide precursor layer to form a polyimide insulating layer.