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Expired Canadian patentCanada

Method of degrading tbp using a photosynthetic bacterial strain

CA 2525314 C · Owner: Commissariat A L'Energie Atomique · Inventors: Berne, Cecile; Garcia, Daniel

CIPO record

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Abstract From the Canadian patent

The invention relates to: a method of treating liquid waste (liquid agricultural or industrial effluents or aquatic sites) which is loaded or polluted with tributyl phosphate (TBP) modified bacterial strains which can be used in the aforementioned treatment method a method for monitoring changes in TBP pollution and the device which is used to perform said treatment method. According to the invention the liquid waste-treatment or -purification method essentially comprises: steps (1) consisting in bringing said liquid waste into contact with at least one non-sulphur purple photosynthetic bacterial strain which is resistant to TBP and which is selected from the group containing …

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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 May 13, 2004 and granted January 13, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 13, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 13, 2004
GrantedJanuary 13, 2015
Term endedMay 13, 2024
Patent numberCA 2525314 C
Classification (IPC)C12N1/20 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 13, 2004Patent grantedJan 13, 2015Term endedMay 13, 2024

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