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Expired Canadian patentCanada

Continuous gas treatment method and apparatus for adsorption processes

CA 1304698 C · Owner: Advanced Separation Technologies Incorporated · Inventors: Dawson, John E.

CIPO record

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Abstract From the Canadian patent

Apparatus designed to effect the continuous processing of gas mixtures for the selective removal of certain elements and constituents from the gases. A method is also disclosed by which the continuous process is carried out. A drum-shaped rotor unit has adsorbent carrying containers mounted about an axis. These containers rotate through a first circumferential zone in which gas processing occurs and a second circumferential zone in which regeneration occurs. This allows gas to constantly flow into the rotor unit at the first circumferential zone to undergo an adsorption process while also continuously providing regenerated adsorbent to the first circumferential zone.

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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 July 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 1987
GrantedJuly 7, 1992
Term endedJuly 7, 2009
Patent numberCA 1304698 C
Classification (IPC)B01D53/06 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 29, 1987Patent grantedJuly 7, 1992Term endedJuly 7, 2009

Sources & verification

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