Blood cleaning hollow fiber membrane, method for cleaning blood, and apparatus therefor
CA 1328843 C · Owner: Aoyagi, Juuro · Inventors: Aoyagi, Juuro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses a blood cleaning hollow fiber membrane characterized by comprising a hydrophobic porous hollow fiber membrane and having a hydrophilic thin layer formed at least on the inner surface of said hollow fiber membrane by the grafting of a hydrophilic compound through the agency of a gamma ray. Also disclosed is a method for the cleaning of freeze preserved blood in which either first or second liquid passing spaces of a plurality of blood cleaning apparatuses are connected in series each such, apparatus incorporating therein a multiplicity of porous hollow fiber membranes. As a result, continuous blood flow paths are formed, and these paths are disposed …
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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
- Granted April 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 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.