Process for protein refolding by means of buffer exchange using a continuous stationary phase capable of separating proteins from salt
CA 2227318 C · Owner: Seely, Robert J. · Inventors: Ladisch, Michael R.; Seely, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a quick and efficient refolding process which utilizes cellulosic rolled stationary phase to rapidly separate the reduced denatured protein , from the denaturant solution thereby promoting high protein refold yields at higher protein concentrations, while significantly decreasing the volume needed to achieve protein refolding.
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 July 11, 1996 and granted September 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2018.
- 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.