Expired Canadian patentCanada
Embossed vortex generator enhanced plate fin
CA 2026549 C · Owner: Esformes, Jack Leon · Inventors: Esformes, Jack Leon; Ubowski, Lawrence Walter
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An enhanced plate fin of a plate fin heat exchanger wherein vortex generator enhancements are embossed above and below the surface of the plate fin for the purpose of oversizing the boundary layer fluid between adjacent fins.
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 September 28, 1990 and granted October 12, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 28, 1990
GrantedOctober 12, 1993
Term endedSeptember 28, 2010
Patent numberCA 2026549 C
Classification (IPC)F28F7/00 +1 more
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.