Title: Electric resistor based on silicon carbide having a negative temperature coefficient

Abstract: An electric resistor having a negative temperature coefficient of the electrical resistance whose resistance body consists of p-type doped pyrolytic polycrystalline cubic silicon carbide.

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Inventors: Knippenberg, Wilhelmus Franciscus (Eindhoven, NL)
Verspui, Gerrit (Eindhoven, NL)
Hagen, Siegfried Hendrik (Eindhoven, NL)

Application Number: 615695
Filing Date: 1975-09-22
Publication_date: 1978-04-25
Assignee: U.S. Philips Corporation (New York, NY)
Primary Class(es): 338/22R 338/20, 338/308
Other Classes:
US Patent Ref:

3157541

Nov, 1964

Heywang et al.

148/174.

Other Refs:
Primary Examiner: Albritton, C. L.
Assistant Examiner:
Attorney: Trifari; Frank R., Spain; Norman N.