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Expired Canadian patentCanada

Use of ulvans as elicitors of mechanisms for nitrogen absorption and protein synthesis

CA 2842955 C · Owner: Centre Mondial D'Innovation · Inventors: Dumas, Bernard; Esquerre-Tugaye, Marie-Therese; Briand, Xavier

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Abstract From the Canadian patent

The present invention concerns the use of ulvans specifically green algae extracts of the Ulva or Enteromorpha type or oligosaccharides derived from ulvans as elicitors for nitrogen and protein synthesis absorption mechanisms. It also concerns a fertilising product containing ulvans and its use in a treatment process for plants.

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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 30, 2005 and granted June 14, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 30, 2005
GrantedJune 14, 2016
Term endedMarch 30, 2025
Patent numberCA 2842955 C
Classification (IPC)A01N65/03 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMarch 30, 2005Patent grantedJune 14, 2016Term endedMarch 30, 2025

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