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Expired Canadian patentCanada

Transport medium for micro-organisms

CA 1206110 A · Owner: Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty'S Canadian Government · Inventors: Bryan, Lawrence E.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention disclosed is an improved transport medium for microorganisms, the improvement residing in the inclusion of Mg++ in a concentration of 0.6 to 1.2 g per litre of medium preferably about 1.0 g/l. Further improvement resides in the timing of inclusion of the reducing agent sodium thioglycollate, i.e. just before use. It has also been found that the detoxification agent, activated charcoal, may be included in concentrations of 5 - 10 g/l of medium.

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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 June 17, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 11, 1983
GrantedJune 17, 1986
Term endedJune 17, 2003
Patent numberCA 1206110 A
Classification (IPC)C12N1/20 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedOct 11, 1983Patent grantedJune 17, 1986Term endedJune 17, 2003

Sources & verification

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