Apparatus and method for detecting a substance in a fluid medium
CA 1072184 A · Owner: Tompkins, Richard M. · Inventors: Graham, Jerome L.; Tompkins, Richard M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, An electronic apparatus and method for detecting a quantity of a predetermined substance disposed in a fluid medium. The apparatus includes a probe for contacting the fluid medium and for sensing an electrical condition, such as solution resistance of the fluid medium caused at least in part by the substance to be detected. There is also included electronic control devices connected to the probe means for generating a signal which is proportional to the quantity of the substance to be detected. The signal is fed to some utilization means such as a meter, for indicating the amount of substance in solution.
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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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 1997.
- 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
Timeline From CIPO dates
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.