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Expired Canadian patentCanada

Pyrolysis methods for dissociating an organic mass

CA 2644041 C · Owner: Nowack, William · Inventors: Nowack, William

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Abstract From the Canadian patent

Pyrolysis methods for disassociating an organic mass or coating from an article, by placing the article in an air tight processing chamber circulating a gaseous mixture of ambient air and at least 40% water vapor by volume from an opening through the processing chamber and out of an exhaust port and maintaining the processing chamber at a temperature above 650 degrees Fahrenheit for a sufficient time to disassociate the organic material. A batch oven and a continuous processing oven including entrance and exit air closures that utilize the pyroiysis methods are described.

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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

  • Filed March 29, 2006 and granted July 7, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 29, 2006
GrantedJuly 7, 2015
Term endedMarch 29, 2026
Patent numberCA 2644041 C
Classification (IPC)C23G5/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 29, 2006Patent grantedJuly 7, 2015Term endedMarch 29, 2026

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