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Expired Canadian patentCanada

Fluidization promoter

CA 1137960 A · Owner: Badger Company, Inc. (The) · Inventors: Jones, David H.; Shingles, Terry; Dry, Mark E.

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

The invention is directed to improving the quality of fluidization of fluidized solids and comprises the addition of fluidization promoters in particle form that have a smaller density and particle size than the neat solids. In a preferred embodiment of the invention the catalyst is a Fisher-Tropsch catalyst and the fluidization promoter comprises carbon particles.

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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 December 21, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 17, 1978
GrantedDecember 21, 1982
Term endedDecember 21, 1999
Patent numberCA 1137960 A
Classification (IPC)B01J35/02 +2 more

Timeline

Timeline From CIPO dates

1979198219851988199119941997Application filedMarch 17, 1978Patent grantedDec 21, 1982Term endedDec 21, 1999

Sources & verification

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