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. 23, 1977
Filed:
Oct. 31, 1974
Alexander S Laurie, Horsham, EN;
E. R. A. Patents Limited, Leatherhead, EN;
Abstract
Process for forming a vitreous enamel electrical resistor coating on a substrate, said vitreous enamel containing an electrically conductive species as a crystalline phase and having a temperature coefficient of resistance, as measured in the temperature range of 20.degree. to 120.degree. C, of from -500 to +500 ppm/.degree. C, comprises applying to said substrate a paste comprising (1) an organic medium, (2) a powdered aluminoborate glass containing dissolved molybdenum trioxide, tungsten trioxide, cerium dioxide, manganese dioxide or ferric oxide in an amount of 2 to 30 mol percent of the total constituent oxides of the glass and (3) powdered boron, silicon, molybdenum disilicide or tungsten disilicide in an amount of 0.25 to 30 percent by weight based on the total weight of components (2) and (3) and firing the paste on the substrate at a temperature of about 600.degree. to 900.degree. C to form a vitreous enamel. The coated substrates are particularly useful in thick film printed and fired circuits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile