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Expired Canadian patentCanada

Ion water for production of foods and beverages

CA 2013369 C · Owner: Nasu, Akiko · Inventors: Nasu, Atsushi

CIPO record

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Abstract From the Canadian patent

Ion water for the production of beverages and foods obtained by acidifying sea water, adding a strong alkali agent to make the pH high, removing a precipitate formed thereon, concentrating the resulting solution and cooling and thereafter dissolving a precipitate formed on cooling in water, optionally further dissolving a solid obtained by removing the water content from the solution after the removal of the precipitate formed on cooling, and also together with an activated calcium material obtained by calcining animal bones at high temperatures and grinding and mainly comprising calcium phosphate. By using such ion water the treated, beverages and foods enjoy better storability resistance …

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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 March 29, 1990 and granted June 11, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 29, 1990
GrantedJune 11, 1996
Term endedMarch 29, 2010
Patent numberCA 2013369 C
Classification (IPC)C02F1/68 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMarch 29, 1990Patent grantedJune 11, 1996Term endedMarch 29, 2010

Sources & verification

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