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Expired Canadian patentCanada

Method for the separation of hydrogen isotopes

CA 1293205 C · Owner: Van Gompel, Remi · Inventors: Van Gompel, Remi; Vansant, Etienne; Peeters, Guido

CIPO record

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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 is directed to a method for the separation of hydrogen isotopes from each other by means of gas-solid chromatography, using a chromatography column containing a solid packing material. In order to improve the efficiency of the separation, the invention is characterized in that a zeolite or a modified zeolite is used as solid packing material in the chromatography column.

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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 December 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 2008.
  • 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 30, 1986
GrantedDecember 17, 1991
Term endedDecember 17, 2008
Patent numberCA 1293205 C
Classification (IPC)B01D15/08 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJan 30, 1986Patent grantedDec 17, 1991Term endedDec 17, 2008

Sources & verification

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