Purification of hemoglobin
CA 2176494 C · Owner: Matthews, Maura-Ann H. · Inventors: Ernst, Ulrich P.; Traylor, David W.; Ryland, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to methods for the production of pure hemoglobin solutions particularly pure hemoglobin solutions derived from expression of hemoglobin in recombinant systems and compositions thereof. Methods are also disclosed for removal of contaminant hemoglobins using rapid heating to result in substantially protoporphyrin IX-free hemoglobin solutions and for removal of high amounts of, bacterial proteins and simultaneous purification of crude hemoglobin-oontaining starting materials to result in partially purified hemoglobin solutions. Methods for the further purification of partially purified hemoglobin solution and the removal of metal contamination in hemoglobin solutions, if …
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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 November 15, 1994 and granted August 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2016.
- 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.