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Expired Canadian patentCanada

Purifying apparatus for gaseous fluids

CA 1328828 C · Owner: Gutermuth, Paul · Inventors: Gutermuth, Paul

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

An apparatus for purifying gaseous fluids is suggested comprising a body surrounded by separator areas through which the fluids are flowing. The separator areas here are composed of interlacing profile sections causing an acceleration or, resp. deceleration of the fluids flowing through.

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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 April 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 2011.
  • 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 2, 1988
GrantedApril 26, 1994
Term endedApril 26, 2011
Patent numberCA 1328828 C
Classification (IPC)B01D45/08

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedSep 2, 1988Patent grantedApril 26, 1994Term endedApril 26, 2011

Sources & verification

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