Hemodialysis method and membrane
CA 1325501 C · Owner: Kataoka, Hiroshi · Inventors: Kunitomo, Tetsunosuke; Kobayashi, Takuichi; Kataoka, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are hemodialysis membrane and hemodialysis method. The membrane has a total protein permeability of not more than 0.2%, and has a reduction rate of .beta.2-microglobulin of not less than 5%. The hemodialysis membrane selectively removes .beta.2microglobulin which was shown to cause some long-term complications such as carpal tunnel syndrome in the patients undergoing hemodialysis, while preventing the leakage of useful proteins.
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
- Granted December 28, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 2010.
- 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.