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Expired Canadian patentCanada

Water for medical treatment, production method thereof, and dialysis apparatus using water for medical treatment as dialysis liquid

CA 2180487 C · Owner: Nihon Trim Co. Ltd. · Inventors: Morisawa, Shinkatsu

CIPO record

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Abstract From the Canadian patent

A main feature of the present invention is to provide water for medical treatment that can abolish the Superoxide Anion Radical (SAR) which may trigger various diseases. Raw water including at least natrium kalium, magnesium and calcium ions is supplied to a cathode chamber and an anode chamber. A current within the range of 0.16 mA/cm2 ~ 3.2 mA/cm2 is applied per two electrodes and one diaphragm for 0.5 seconds ~ 5 seconds across a cathode electrode and an anode electrode to electrolyze the raw water. By this method water for medical treatment is produced that has an oxidation-reduction potential value within the range of -150 mV ~ 0 mV measured using a platinum electrode. The water for …

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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 July 4, 1996 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 4, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 4, 1996
GrantedApril 10, 2001
Term endedJuly 4, 2016
Patent numberCA 2180487 C
Classification (IPC)C02F1/46 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedJuly 4, 1996Patent grantedApril 10, 2001Term endedJuly 4, 2016

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.