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Expired Canadian patentCanada

Secondary metallization by glass displacement in ceramic substrate

CA 1260337 A · Owner: General Electric Company · Inventors: Charles, Richard J.; Pasco, Wayne D.; Mitoff, Stephan P.

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Abstract From the Canadian patent

RD-16,462, SECONDARY METALLIZATION BY GLASS DISPLACEMENT IN CERAMIC SUBSTRATE, ABSTRACT, A process for increasing electrical conductance of a metallization on a ceramic substrate wherein the metallization is an intermixture of continuous phases of refractory metal and glass which comprises contacting the refractory metal with an electrically conductive intrusion metal and heating the resulting structure to a temperature at which the glassy phase is fluid, the refractory metal is solid, and the intrusion metal is liquid whereby the liquid metal preferentially wets the refractory metal migrates, into the metallization displacing glass and upon subsequent, solidification, partially or wholly …

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 15, 1986
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1260337 A
Classification (IPC)C04B41/89 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedAug 15, 1986Patent grantedSep 26, 1989Term endedSep 26, 2006

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