Heat transfer surfaces with flanged apertures
CA 2557422 C · Owner: Evans, Bruce · Inventors: Evans, Bruce; So, Allan K.; Cotton, James Scott
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat exchanger, turbulizer or heat transfer surface and a method of making same wherein the turbulizer is a corrugated member having parallel spaced- apart ridges and planar fins extending therebetween. The planar fins have spaced- apart apertures with opposed peripheral edge portions including transversely extending flanges.
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 28, 2006 and granted October 14, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 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.
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.