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Expired Canadian patentCanada

Combination downflow-upflow vapor-liquid separator

CA 1270449 C · Owner: Kidwell, John H. · Inventors: Kidwell, John H.; Eaton, Andrew M.; Prueter, William P.

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 improved vapor-liquid separator having a vertically disposed conduit for flow of a mixture. A first, second and third plurality of curved arms penetrate and extend within the conduit. A cylindrical member is radially spaced from the conduit forming an annulus therewith and having perforations and a retaining lip at its upper end.

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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 June 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2007.
  • 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 26, 1986
GrantedJune 19, 1990
Term endedJune 19, 2007
Patent numberCA 1270449 C
Classification (IPC)B04C3/06 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedFeb 26, 1986Patent grantedJune 19, 1990Term endedJune 19, 2007

Sources & verification

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