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Expired Canadian patentCanada

Lead type chip capacitor and process for producing the same

CA 1317353 C · Owner: Hirama, Masahiro · Inventors: Tanidokoro, Hiroaki; Hikita, Kazuyasu; Hirama, Masahiro

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A lead type chip capacitor which is disclosed herein comprises a capacitor chip having a lead terminal bonded thereto through a joining or bonding layer made of a highly melting metal paste. The lead type chip capacitor is produced by bonding at least one internal electrode in a capacitor chip with a lead terminal by a metal paste drying, them at a temperature in a range of 100 to 200°C and firing, the resulting capacitor chip with the lead terminal bonded thereto at a temperature in a range of 500 to 900°C in the air or in a nitrogen atmosphere.

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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 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 25, 1989
GrantedMay 4, 1993
Term endedMay 4, 2010
Patent numberCA 1317353 C
Classification (IPC)H01G4/12 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 25, 1989Patent grantedMay 4, 1993Term endedMay 4, 2010

Sources & verification

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