Cryogenic rectification system with hybrid refrigeration generation
CA 2293129 C · Owner: Weber, Joseph Alfred · Inventors: Olszewski, Walter Joseph; Bonaquist, Dante Patrick; Weber, Joseph Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for generating refrigeration and providing the refrigeration into a cryogenic rectification plant wherein, in addition to refrigeration generated by turboexpansion further, refrigeration for the plant is generated by a recirculating multicomponent refrigerant in a refrigeration circuit.
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 December 24, 1999 and granted August 19, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 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.