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Expired Canadian patentCanada

Dual cartridge air dryer with oil separator and readily changeable valves

CA 2557332 C · Owner: Skf Usa Inc. · Inventors: Mahoney, Thomas J.; Salzman, Monte

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

An air dryer system including two substantially identical canister-type air dryer units. Each includes a moist air inlet a first desiccant, a dry air , outlet, and means for supplying dry air to a storage facility. The system also includes a bleed , valve supplying a small portion of the dry air to regenerate a second desiccant, and a , first moist air purge valve. The system operates in the opposite mode and supplies , air to a storage facility. Located between the moist air inlets and the desiccants are a , pair of air-oil separators. In these upwardly directed air flows through a housing, striking a deflector plate, and escapes beneath a vertically extending fence and , 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

  • Filed February 8, 2005 and granted May 7, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 8, 2005
GrantedMay 7, 2013
Term endedFebruary 8, 2025
Patent numberCA 2557332 C
Classification (IPC)B01D53/04 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedFeb 8, 2005Patent grantedMay 7, 2013Term endedFeb 8, 2025

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