Purification process
CA 1092148 A · Owner: Unilever Limited · Inventors: Sen Gupta, Achintya K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Glyceride oil compositions are refined by contacting them in solution in an organic solvent under pressure with a semi-permeable membrane to separate constituents of different molecular weights into retentate and permeate fractions. The composition before said separation or at least one of said fractions after said separation is contacted in solution in a non-polar solvent, with a metal oxide or metalloid oxide adsorbent in a column Optionally the, oil can be subjected to a bleaching and/or a deodorizing treatment. This process allows glyceride oil compositions to be refined by purely physical means, avoiding contact of the composition with chemicals, which may harm the quality of the …
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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 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
- 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.