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Expired Canadian patentCanada

Heat exchanger block

CA 2557037 C · Owner: Sgl Carbon Ag · Inventors: Franz, Marcus; Kuenzel, Juergen

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A heat exchanger block includes two plates having abutting surfaces with grooves forming passages in which gaseous medium to be cooled flows. Spaces through which a cooling medium flows and which directly adjoin outer surfaces of the plates are provided in the heat exchanger block.

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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 August 24, 2006 and granted July 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 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.
FiledAugust 24, 2006
GrantedJuly 23, 2013
Term endedAugust 24, 2026
Patent numberCA 2557037 C
Classification (IPC)F28D9/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedAug 24, 2006Patent grantedJuly 23, 2013Term endedAug 24, 2026

Sources & verification

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