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Expired Canadian patentCanada

Shallow bed fluid treatment apparatus

CA 2398235 C · Owner: Amalgamated Research, Inc. · Inventors: Velasquez, Lawrence; Peterson, Kenneth R.; Kearney, Michael M.

CIPO record

Overview

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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 fluid processing apparatus and method are disclosed. The apparatus has a resin bed with inlet and , outlet ends and a fluid distributor arranged to introduce fluid at the inlet end, with the distributor , including a plurality of conduits and distribution exits formed into a fractal structure. The individual , conduits are positioned on separate planes so as not to intersect with one another. The fluid , distributor is spaced from the resin bed to define a void space. A fluid collector is provided, including individual conduits and collection inlets formed into a fractal structure. The distributor , and the collector are positioned in a mirror image relationship with one another …

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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 January 25, 2001 and granted August 13, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2023.
  • 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 25, 2001
GrantedAugust 13, 2013
Term endedJanuary 25, 2021
Patent numberCA 2398235 C
Classification (IPC)B01J8/02 +1 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedJan 25, 2001Patent grantedAug 13, 2013Term endedJan 25, 2021

Sources & verification

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