Expired Canadian patentCanada
Process to cool gas
CA 2008339 C · Owner: Union Carbide Industrial Gases Inc. · Inventors: Polizzotto, Robert Joseph
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process which effectively uses steam produced by a cogeneration facility to cool gas wherein the steam is passed through an absorption chiller to cool water which in turn is used to cool the gas.
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 January 23, 1990 and granted January 11, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 23, 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.
FiledJanuary 23, 1990
GrantedJanuary 11, 1994
Term endedJanuary 23, 2010
Patent numberCA 2008339 C
Classification (IPC)F25J1/00 +2 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.