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:
Jan. 29, 1985
Filed:
Jun. 04, 1984
Applicant:
Inventors:
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
174 685 ; 428458 ; 4284735 ; 4284744 ; 427 96 ; 528125 ;
Abstract
Flexible base materials consisting of a metal foil and a film of a polyamide, polyamide-imide and/or polyimide, firmly adhering thereto without an intermediate layer, the film being obtained by heating a polyamide, polyamide-amidoacid and/or polyamide-acid containing the structural units of the formulae I and II. The individual symbols are as defined in claim 1. The base materials according to the invention are useful for the production of flexible printed circuits.