Apparatus for heat transfer between gas flows
CA 2417824 A1 · Owner: Oy Casparado Ab · Inventors: Ramm-Schmidt, Leif
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of the invention is a heat exchanger (1) for transferring heat between gas flows directed principally counter current the walls of the heat , exchanger (1) separating the flows from each other being flexible film (3) through which the heat transfer takes place. The heat exchange elements (2) are attached to each other by welding so that no rigid side walls are required. In this case, the heat exchanger (1) can be folded especially for packaging, transport and installation.
Read the whole patent
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 3, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 3, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.