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Expired Canadian patentCanada

Gas separation

CA 1339771 C · Owner: Philippaerts, Jos · Inventors: Verbiest, Jan; Vansant, Etienne; Philippaerts, Jos

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to a process for the separation of at least one gas from a mixture containing at least two gases, which process comprises contacting a pore containing molecular sieve with said mixture of gaseous components, selectively adsorbing at least one component of the mixture in the pores of the molecular sieve, separating the molecular sieve from the non-adsorbed component or components and optionally desorbing the adsorbed component or components, said molecular sieve having been modified with a modifying agent containing at least one weak acid, a salt of a weak acid, or a derivative of a weak acid of at least one element of the Groups III, IV and V of the Periodic Table of …

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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

  • Granted March 24, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 10, 1989
GrantedMarch 24, 1998
Term endedMarch 24, 2015
Patent numberCA 1339771 C
Classification (IPC)B01D53/04 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedFeb 10, 1989Patent grantedMarch 24, 1998Term endedMarch 24, 2015

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.