Method of enumerating escherichia coli
CA 1317534 C · Owner: Her Majesty The Queen, In Right Of The Province Of Ontario As Represente D By The Ministry Of The Environment For The Province Of Ontario · Inventors: Ley, Arthur Newton; Rickey, Neil Ernest; Taylor, Michael John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method which is specific to determining and is capable of enumerating Escherichia coli (E. coli) in a sample water or sewage specimen. The method comprises adding to a cultured specimen a chromogenic reagent which when subjected to in situ E. coli .beta. -glucuronidase activity produces clearly defined vivid colourization of any individual colonies derived from E. coli cells in the test specimen.
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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
- Granted May 11, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 2010.
- 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.