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Expired Canadian patentCanada

Process and apparatus for treating wet fat biological tissue using a water miscible solvent

CA 1255234 A · Owner: Faraday Laboratories, Inc. · Inventors: Suresky, Arnold

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Abstract From the Canadian patent

Abstract, The process of simultaneously defatting and dehydrating raw fat animal tissue and other tissues in comminuted form by introducing the tissue particles into a boiling alcohol solvent, the fat of the tissue and water of the tissue being extracted into the body of boiling alcohol to form a slurry of alcohol particles, fat and water. The water of the tissue and alcohol in an azeotropic vapor form are distilled off from the body of slurry and separated in a subsequent distillation to recover the alcohol for recycling. When sufficient water is removed from the slurry the, solids are separated from the liquids of the slurry and the alcohol is evaporated from the fat. The recovered …

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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 June 6, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 6, 2006.
  • 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 25, 1985
GrantedJune 6, 1989
Term endedJune 6, 2006
Patent numberCA 1255234 A
Classification (IPC)C11B1/10 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedFeb 25, 1985Patent grantedJune 6, 1989Term endedJune 6, 2006

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