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Expired Canadian patentCanada

Viscosity reduction apparatus

CA 1281380 C · Owner: Klaila, William J. · Inventors: Klaila, William J.

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 method and apparatus for reducing the viscosity of high viscosity material within a container. An electromagnetic energy source is mounted within a housing which is provided with a 5 fixture that is configured to interconnect with the container of high viscosity material. Means are provided for directing the electromagnetic energy from the source to the container for heating the high viscosity material therein and reducing its viscosity.

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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 March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
  • 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 27, 1986
GrantedMarch 12, 1991
Term endedMarch 12, 2008
Patent numberCA 1281380 C
Classification (IPC)H05B6/80 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 27, 1986Patent grantedMarch 12, 1991Term endedMarch 12, 2008

Sources & verification

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