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Expired Canadian patentCanada

Method of making electrical connections to thin film coatings and the electrical connector formed thereby

CA 1182661 A · Owner: The Perkin-Elmer Corporation · Inventors: Mount, Bruce E.

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Abstract From the Canadian patent

Disclosed is a method of making electrical connections to thin film coatings and the electrical connector formed thereby especially useful in a fluid flowmeter. The film with its conductive coating is pressed against a rigid, relatively long, connector bar by conductively coated pads of elastomeric material at a selected controlled pressure with the electrical connections to the film coating being made through the bar and pads. Utilizing this method, localized high stress areas which cause damage to the thin film are avoided, and low current densities are accomplished by the controlled contact pressure over a large area of the film coating.

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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 February 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2002.
  • 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 31, 1982
GrantedFebruary 19, 1985
Term endedFebruary 19, 2002
Patent numberCA 1182661 A
Classification (IPC)G01F15/00

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedAug 31, 1982Patent grantedFeb 19, 1985Term endedFeb 19, 2002

Sources & verification

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