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Expired Canadian patentCanada

Surface cooled finned plate heat exchanger

CA 2425233 C · Owner: Seiler, Thomas F. · Inventors: Kistner, Matthias; Seiler, Thomas F.

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 surface cooled heat exchanger that includes an extruded core member defining a plurality of spaced apart flow passages. The core member has first and second sides one of said first and second sides defining a first set of flow openings communicating with the flow passages and one of said first and second sides defining a second set of flow openings communicating with the flow passages. A first unitary end cap connected to the first end of the core member has a first member sealing the first flow passage ends of at least some of the flow passages and a second member extending from the first member partially over the side of the core member defining the first set of flow openings and …

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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 April 11, 2003 and granted November 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 11, 2003
GrantedNovember 15, 2011
Term endedApril 11, 2023
Patent numberCA 2425233 C
Classification (IPC)F28D1/04 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedApril 11, 2003Patent grantedNov 15, 2011Term endedApril 11, 2023

Sources & verification

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