Purification of factor xiii
CA 2002962 A1 · Owner: Bishop, Paul D. · Inventors: Lasser, Gerald W.; Bishop, Paul D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Methods for purifying factor XIII from a variety of biological fluids are disclosed. Within one aspect of the invention, the method comprises adjusting the pH of the fluid to about pH 5.5 to 6.5 to precipitate the factor XIII and, subsequently recovering the precipitated factor XIII. Within a related aspect of the present invention the method, comprise (a) fractionating the biological fluid by anion exchange chromatography to produce an enriched fraction; (b) adjusting the pH of the enriched fraction to about pH 5.5 to 6.5 to precipitate the factor XIII; and (c) recovering the precipitated factor XIII.
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 November 14, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2011.
- 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.