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Expired Canadian patentCanada

Methods of removing sterols and/or other steroidal compounds from edible fats and/or oils and/or fats and/or oils from which such sterols and /or other steroidal compounds have been removed

CA 1332056 C · Owner: Keen, Alan Robert · Inventors: Ward, David Douglas; Hobman, Peter Graeme; Keen, Alan Robert

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Abstract From the Canadian patent

1-, Abstract, Method of reducing sterols and other steroidal compounds from fats or oils. A solvent or solvent system to effect selected removal of the sterol or steroidal compound is added to and maintained in contact with liquid fat or oil for a desired time and the solvent and extracted components separate from the solvent. In the examples milk fat has cholesterol therein reduced and the milk fat containing a reduced amount of cholesterol used in foodstuffs. The extracted cholesterol is useful and fat remaining after the solvent has been removed is useful as a source of desirable flavours. The solvent may be subsected to a recovery process for reuse.

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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 September 20, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 20, 2011.
  • 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 10, 1989
GrantedSeptember 20, 1994
Term endedSeptember 20, 2011
Patent numberCA 1332056 C
Classification (IPC)C07J9/00 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedFeb 10, 1989Patent grantedSep 20, 1994Term endedSep 20, 2011

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