Process for refining glyceride oil using silica hydrogel
CA 2012544 C · Owner: Crosfield Limited · Inventors: Brunia, Leo; Van Dalen, Josef P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for refining glyceride oil comprising the steps of: i) contacting the glyceride oil with a silica hydrogel; ii) removing water from the mixture of glyceride oil and silica hydrogel; and, iii) separating the silica hydrogel from the mixture. Preferably water is removed to such an extent that the final water content of the mixture of glyceride oil and silica hydrogel is less than 0.2% wt, preferably 0.1% wt or, even less than 0.1% wt.
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 March 19, 1990 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 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.