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. 12, 1991
Filed:
Mar. 06, 1989
Applicant:
Inventors:
Joseph M Ilardi, Sparta, NJ (US);
Bernard P Gollomp, West Lawrence, NY (US);
Assignee:
Allied-Signal Inc., Morris Township, Morris County, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ; H05K / ;
U.S. Cl.
CPC ...
361386 ; 361401 ;
Abstract
A high circuit density printed circuit board is manufactured on a metal substrate by building a layer of photoimageable dielectric on the metal substrate and then imaging the dielectric in a manner so as to create wells for active components which are mounted directly on the metal substrate for the purpose of heat dissipation. The build up of the dielectric layer can be improved to provide circuit traces such as, for example, buried coaxial cables prior to the imaging process to achieve even higher density with conventional circuit boards.