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:
Aug. 31, 1999
Filed:
Oct. 29, 1997
Wallace Dean Doeling, Forest Grove, OR (US);
Sequent Computer Systems, Inc., Beaverton, OR (US);
Abstract
A method is disclosed for forming resistors that are low cost, easy to manufacture and substantially within 5 percent of their desired value. In one aspect of the method, an electrically resistive material, such as nickel, is deposited directly on an insulating layer, such as a substrate. A conductive material, such as copper, is then deposited on the resistive material. Using photo-imaging, signal traces are formed in the conductive and resistive materials. A resistor is created by forming a gap in the conductive material at a location where the resistor is desired. Current is thereby forced to flow through the resistive material at the location of the gap.