Stacked plate heat exchangers and heat exchanger plates
CA 2477817 C · Owner: Vanderwees, Doug · Inventors: Vanderwees, Doug; Martin, Michael A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plate-type heat exchanger is comprised of a stack of dished plates with the plates being sealed at their margins by nesting sidewall and the plate bottoms being spaced from one another to define a plurality of flow passages. Each of the plates has two pairs of openings. Two of the openings are formed in bosses which are joined to the sidewall along a portion of their length thereby avoiding formation of a bypass channel between the bosses and the sidewall and maximizing the plate area available for heat transfer. The other two openings are provided with ribs which support the bosses of upwardly adjacent plates in the stack and which provide channels to provide transverse distribution of …
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 16, 2004 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 16, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2026.
- 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.