Method for the isolation of degradative microbial consortia and apparatus therefore
CA 2098331 C · Owner: Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of The Environment · Inventors: Hendry, M. Jim; Lawrence, John R.; Wolfaardt, Gideon M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a method for isolating microorganisms which are capable of metabolizing a selected contaminant at a variety of concentrations. An apparatus in the form of an extended concentration gradient gel cell is disclosed for the purpose of sustaining the contaminant in various concentration levels on the gel. The microorganisms self colonize on the gel cell at a concentration suitable for metabolic activity of the microorganisms. This permits easy identification and isolation of microorganisms capable of metabolizing various concentrations of a contaminant.
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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 June 14, 1993 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.