Process for isolating lactoferrin and lactoperoxidase from milk and milk products, and products obtained by such process
CA 2128111 C · Owner: Campina Melkunie B.V. · Inventors: Kussendrager, Klaas Daniel; Verver, Albert Bruno; Kivits, Marinus Gerardus Cornelis
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 isolating bioactive proteins such as lactoperoxidase and lactoferrin from milk and/or milk derivatives, characterized by the steps of: a) adsorbing said proteins to a cation exchanger by passing the milk or the milk derivative over the cation exchanger at a high superficial velocity (more than 500 cm per hour) and a high liquid load (100-600 bed volumes per hour); b) eluting these proteins separately or simultaneously, by elution with one or more salt solutions so as to, form one or more eluates, optionally followed by c) drying of the said eluates. The invention further relates to products obtained by this process.
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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 January 14, 1993 and granted June 16, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2015.
- 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.