Counter current dry fractional crystallization
CA 2017294 C · Owner: Van Den Oever, Christiaan E. · Inventors: Keulemans, Cornelis N. M.; Van Den Oever, Christiaan E.
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 method for dry fractionation of fatty substances by a counter current dry fractionation operation, comprising at least two dry fractional crystallization treatments; - a first dry fractional crystallization treatment comprising the steps of:, 1a) dry fractionating by crystallization the fatty substances into a higher melting first stearin fraction and a lower melting first olefin fraction; 1b) separating the first stearin fraction from the first olefin fraction by membrane filter pressing; and 1c) feeding the separated first olefin fraction to a second dry fractional recrystallization treatment; and a second dry fractional crystallization treatment comprising 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
- Filed May 22, 1990 and granted October 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 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.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.