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Expired Canadian patentCanada

System for separating an immiscible liquid/liquid mixture and apparatus therefor

CA 2110026 C · Owner: Whitney, Scott A. · Inventors: Welch, Thomas C.; Williamson, Kenneth M.; Rausch, Alan R.

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

A liquid purification system is provided which is capable of separating a first liquid that is wholly or partly immiscible in and forms a discontinuous phase with a second continuous phase-forming liquid from that second liquid. The system comprises at least one coalescing assembly for coalescing the first liquid and at least one separating assembly for separating droplets of the first liquid from the second liquid. The at least one coalescing assembly and the at least one separating assembly are arranged in superposed and fluid-communicable relationship.

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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

  • Filed November 25, 1993 and granted April 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 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.
FiledNovember 25, 1993
GrantedApril 4, 2000
Term endedNovember 25, 2013
Patent numberCA 2110026 C
Classification (IPC)B01D17/02 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedNov 25, 1993Patent grantedApril 4, 2000Term endedNov 25, 2013

Sources & verification

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