Expired Canadian patentCanada
Cryogenic apparatus
CA 2014177 C · Owner: Praxair Canada Inc. · Inventors: Maric, Radovan R.
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 cryogenic apparatus is described which is designed to be of a compact size and to provide multiple functions, including chilling of gas or liquid condensation of condensable vapours, and separation of liquid and gas phases of liquified cryogenic 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 April 9, 1990 and granted September 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 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.
FiledApril 9, 1990
GrantedSeptember 14, 1999
Term endedApril 9, 2010
Patent numberCA 2014177 C
Classification (IPC)F25D31/00 +1 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.