Multiphase heat exchanger
CA 2328207 A1 · Owner: Bodhaine, James · Inventors: Bodhaine, James; Hassanein, Hany E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat exchanger (10) is disclosed having a first chamber (26) a second , chamber (28) positioned inside the first chamber (26) and a third chamber , (32) positioned inside the second chamber (28). The first second, and third , chambers (26, 28, 32) are in coaxial alignment. A first portion (18) of a first helical tube is positioned inside the second chamber (28) and a second portion (20) of the first helical tube is positioned inside the third chamber (32) and a second helical tube is positioned inside the first chamber (26). The heat exchanger (10) heats a cryogenic liquid to a gas phase using at least three different heat transfer fluids in one contained unit without mixing any 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 April 21, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2021.
- 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.