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:
Sep. 13, 1994
Filed:
Jul. 06, 1993
Applicant:
Inventors:
James H Lombard, Albuquerque, NM (US);
Leonard J Anderson, Albuquerque, NM (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427101 ; 427102 ; 427125 ; 4271262 ; 4271263 ; 427226 ; 4272763 ;
Abstract
An electrically resistive film of the type used for forming thick film resistors is formed predominantly of palladium and includes an addition of boron nitride to increase resistance, preferably in combination with tantalum oxide. A paste of palladium powder and boron nitride powder dispersed in a vaporizable vehicle is applied to a substrate and sintered to form the film. In a preferred embodiment, the substrate is a ceramic powder compact that is concurrently sintered in a co-firing process.