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Expired Canadian patentCanada

Means for storing and distributing heat and use thereof

CA 1267352 C · Owner: Latzke, Arno W. · Inventors: Latzke, Arno W.

CIPO record

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

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Abstract From the Canadian patent

Abstract of the Disclosure Means for insulating heat and for storing and distributing heat, more specifically body heat on areas of the outer skin, consist of, a) a foam layer (1) having a thickness of from 0.8 to 8 mm or a skin-compatible layer (1) of a textile fabric leather, cork or plastics;, b) a flexible heat-conductive metal layer (2); and c) a foam layer (3) having a thickness of from 0.8 to 8 mm. The means may be in shapes suitable for use as insoles plasters, soles of shoes, mats, cushions and as a general insulating materials.

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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 April 3, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 28, 1985
GrantedApril 3, 1990
Term endedApril 3, 2007
Patent numberCA 1267352 C
Classification (IPC)B32B5/22 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedMay 28, 1985Patent grantedApril 3, 1990Term endedApril 3, 2007

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