Methods for processing red blood cell products for long term storage free of microorganisms
CA 2086516 C · Owner: Kandler, Richard L. · Inventors: Buchholz, Donald H.; Kandler, Richard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blood processing method provides a red blood cell product that is free of microorganisms like Yersinia enterocolitica during storage periods over 24 hours. The red blood cell product is collected in a first container (16) where it is refrige-, rating to cool the blood product to a temperature of about 3 to degrees C. The refrigerated product is transferred from the first container (16) into a storage container (34) through a prescribed filter medium (44) that comprises a mass of synthetic fibers having an average fiber diameter of about 10 microns or less and a bulk density of about 0.7 gram per cubic centimeter or less. The filtered product is retained in the storage container (34) at a …
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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 April 27, 1992 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2014.
- 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.