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Expired Canadian patentCanada

Resistance material and resistor made therefrom

CA 1077351 A · Owner: Trw Inc. · Inventors: Merz, Kenneth M.; Huang, Cornelius Y.

CIPO record

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Abstract From the Canadian patent

A vitreous enamel resistance material comprising a mixture of a vitreous glass frit and fine particles of a metal silicide of the transition elements of Groups IV V, and VI of the periodic chart. The metal silicide may be of molybdenum disilicide (MoSi2), tungsten disilicide (WSi2), vanadium disilicide (VSi2), titanium disilicide (TiSi2), zirconium disilicide (ZrSi2), chronium disilicide (CrSi2) or titanium disilicide (TaSi2). The ingredients of the vitreous enamel resistance material are present in the proportion of, by weight, 25% to 90% glass frit and 75% to 10% metal silicide. An electrical resistor is made with the vitreous enamel resistor material of the present invention by coating a …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 13, 1980
Term endedMay 13, 1997
Patent numberCA 1077351 A
Classification (IPC)H01C17/06 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMay 13, 1980Term endedMay 13, 1997

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.