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Expired Canadian patentCanada

Casing assembly for desiccant element housing

CA 2204944 C · Owner: Mitsch, Matthew D. · Inventors: Mitsch, Matthew D.

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

A casing assembly of a desiccant housing houses desiccant in an air dryer system. The casing assembly includes a casing portion, a retainer, two porous plates and a mechanism for, compacting the desiccant. The casing portion defines a channel between two sleeves that channels moisture-bearing air from an inlet of a head end out a tail end of the casing portion. An inner sleeve defines a flow chamber between the ends. The head end features an inner seat face that seals against an inner sealing flange of a main portion of the housing. The head end features an outer seat face that connects to an outer sealing flange of the main portion. The inlet communicates with a supply port of the main …

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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 May 9, 1997 and granted November 7, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 9, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 9, 1997
GrantedNovember 7, 2000
Term endedMay 9, 2017
Patent numberCA 2204944 C
Classification (IPC)B01D53/26 +1 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedMay 9, 1997Patent grantedNov 7, 2000Term endedMay 9, 2017

Sources & verification

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