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:
Jul. 18, 1988
Applicant:
Inventors:
Simon N Balderson, Reading, GB;
Alan R Atterbury, Eastcote, GB;
Assignee:
Thorn EMI plc, London, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
75234 ; 75235 ; 219553 ; 252512 ; 252513 ; 252521 ;
Abstract
An electrically resistive track suitable for use as a heating element consists of a thick film including a base metal constituent and a glass constituent. The thick film has in the temperature range of from 20.degree. C. to 600.degree. C. a temperature coefficient of resistance (TCR) less than 0.0050 per degree C. Suitable metal constituents include tungsten, molybdenum, a mixture of nickel and tungsten and a mixture of nickel and chromium.