Process for selectively isolating igy antibodies from egg yolk of an anseriform bird and igy antibodies obtained thereby
CA 2389897 C · Owner: Chiou, Y-Neng · Inventors: Chiou, Y-Neng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention mainly relates to a process for isolation and purification of yolk antibodies from egg yolk of an anseriform bird by an adsorption chromatographic procedure using a water insoluble non-charged absorbent to accomplish a desired separation of yolk antibodies and by a salting-out procedure that differentially precipitates the IgY antibodies. The present invention also relates to the yolk antibodies produced thereby and various uses of such yolk antibodies.
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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 June 7, 2002 and granted November 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2024.
- 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
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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.