Expired Canadian patentCanada
Turbine/motor (generator) driven booster compressor
CA 2237830 C · Owner: Praxair Technology, Inc. · Inventors: Nenov, Neno Todorov
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 compressor assembly for cryogenic gas separation wherein the assembly comprises a compressor an, expansion turbine and an electric motor integrally connected via a gear drive, and processes for using the compressor assembly.
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 May 15, 1998 and granted October 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 15, 1998
GrantedOctober 22, 2002
Term endedMay 15, 2018
Patent numberCA 2237830 C
Classification (IPC)F25B31/02 +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.