Method of making a composite filter material and its use in treating edible oils
CA 2029924 A1 · Owner: Regutti, Robert · Inventors: Regutti, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a method of treating a glyceride oil containing contaminants, in which the method comprises the steps of admixing a filter media comprising a plurality of agglomerates with the glyceride oil, each agglomerate comprising granules of calcined metal oxide and silicate, and thereafter maintaining the agglomerated filter media in contact with the oil for a period of time sufficient for the media to absorb at least a portion of the contaminants. The filter is thereafter removed from the treated oil. There is also disclosed such a filter media for use in the above method, and a method of making the filter media.
Read the whole patent
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 November 14, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.