Hollow fiber dialysis
CA 1106772 A · Owner: Extracorporeal Medical Specialties, Inc. · Inventors: Lee, Kyu H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved dialyzer construction has elongated tubular casing with enlarged casing ends and longitudinallyextending partitioning that divides its interior into a plurality of generally parallel passageways containing hollow dialysis fibers, the casing ends containing dialyzate flow manifolding and directing means for receiving dialyzate from a supply thereof directing it, from one casing end to the other through one of the passageways around the fibers, and so to and fro through the successive passageways, finally directing the dialyzate out through a discharge opening. The dialyzate flow can in each fiber-containing passageway be countercurrent to the flow within the fibers of the liquid …
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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 August 11, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 1998.
- 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.