Tangential flow filtration devices and methods for leukocyte enrichment
CA 2490245 C · Owner: Bosch, Marnix L. · Inventors: Lodge, Patricia A.; Boynton, Alton L.; Monahan, Steven J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides tangential flow filtration devices and methods for enriching a heterogeneous mixture of blood constituents for leukocytes by removal of non-leukocyte blood constituents. In one particular embodiment the device can provide a composition enriched in monocytes. One embodiment includes a remover unit (1) having a crossflow chamber (3) separated by a microporous filter (5) from a filtrate chamber (4) the remover unit (1) also , having a tangential flow inlet (6) a fluid outlet (7) for a fluid enriched in leukocytes and a filtrate outlet (8).
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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 June 19, 2003 and granted August 3, 2021. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2025.
- 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
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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.