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:
May. 18, 1976
Filed:
Feb. 26, 1973
Konrad Hieber, Munich, DT;
Alfred Politycki, Ottobrunn, DT;
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Abstract
A resistor comprising a layer of material disposed on a substrate which layer contains a metal component which can be either a pure metal or a metal alloy and which has carbon inserted therein to vary the specific resistance and the temperature coefficient of the electrical resistance. The method of producing the resistor comprises providing a metal-organic compound such as nickel acetylacetonate which is evaporated and carried by a carrier gas, such as hydrogen or ammonia, to a heated substrate. When the vaporized metal-organic compound contacts the heated substrate it decomposes to provide a layer having a metal component with carbon inserted in the component. By controlling the temperature of the heated substrate and by controlling the pressure of the carrier gas, the volume percent of carbon inserted into the metal component when forming the layer can be controlled to vary both the specific resistance of the layer and the temperature coefficient of the electrical resistance.