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Expired Canadian patentCanada

Aspirating feed funnel for fluidized reactor

CA 1095697 A · Owner: Dorr-Oliver Incorporated · Inventors: Jukkola, Walfred W.; Tomasicchio, Giorgio; Steever, Andrew B.

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 feed device for introducing a dry feed into the reaction chamber of a fluidized bed reactor is provided with plurality of air nozzle which direct high speed jets of air along the feed path in the direction of feed to provide a continuous pressure barrier against excess back pressure in the reactor chamber.

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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 February 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 17, 1998.
  • 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 15, 1978
GrantedFebruary 17, 1981
Term endedFebruary 17, 1998
Patent numberCA 1095697 A
Classification (IPC)B01J8/24 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMay 15, 1978Patent grantedFeb 17, 1981Term endedFeb 17, 1998

Sources & verification

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