Sequential heat treatment of blood-clotting factor products
CA 2002307 A1 · Owner: Rubinstein, Alan I. · Inventors: Rubinstein, Alan I.; Rubinstein, Alan I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating human blood-clotting factor product to reduce the infectivity of a virus such as, hepatitis- or AIDS-causing virus or cytomegalovirus if, present. The method comprises the steps of lyophilizing the product or obtaining the product prelyophilized and then heating the product, while it is lyophilized or prelyophilized, for and at a plurality of different time-andtemperature combinations, and then reconstituting the product.
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 6, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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.