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Expired Canadian patentCanada

Choline-silicic acid complex with osmolytes and divalent trace elements

CA 2479659 C · Owner: Vanden Berghe, Dirk Andre Richard · Inventors: Vanden Berghe, Dirk Andre Richard

CIPO record

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Abstract From the Canadian patent

The invention relates to a biological preparation comprising orthosilicic and silicic acid, a primary ("constant/first") osmolyt choline and a weak alkalinizing agent without free hydroxyl groups and to a method for preparing the preparation, comprising: i) hydrolysing a silicon comprising choline solution thereby forming a choline stabilized orthosilicic acid and oligomers solution; ii) alkalizing the choline orthosilicic acid and oligomers solution by adding a weak alkalizing agent without hydroxyl groups; and iii) optionally adding a divalent trace element and/or secundary osmolyte to biological , preparation obtainable and its uses.

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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 20, 2003 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2025.
  • 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 20, 2003
GrantedSeptember 18, 2012
Term endedMarch 20, 2023
Patent numberCA 2479659 C
Classification (IPC)A01N59/00 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMarch 20, 2003Patent grantedSep 18, 2012Term endedMarch 20, 2023

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