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:
Mar. 01, 1988
Filed:
Mar. 04, 1986
Applicant:
Inventors:
Kirkor Sirinyan, Bergisch Gladbach, DE;
Gerhard D Wolf, Dormagen, DE;
Ulrich von Gizycki, Leverkusen, DE;
Rudolf Merten, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428195 ; 428220 ; 428901 ; 427438 ;
Abstract
Electrical printed circuit boards are obtained in an elegant manner without the usual etching methods and without using bonding agent layers in a wet chemical manner on the basis of the principles of the semi or fully additive technique by using precious metal compounds for activation and base material of a type which has (a) a specific total pore volume per unit area of 0.015-0.045 dm.sup.3 /m.sup.2, (b) a mean pore diameter of 0.05-5.0 .mu.m and (c) a mean pore depth of 0.05-4.0 .mu.m.