Method and apparatus for calibrating moisture sensors
CA 2192212 C · Owner: Maier, Klaus C. · Inventors: Mccarthy, W. Patrick; Braster, Olaf F.; Maier, Klaus C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus, (34) and method are, provided for calibrating a measuring transmitter, (10) which provides an output signal proportional, to a parameter of interest measured by a sensor, (20) in the measuring transmitter (10) without, removing the measuring transmitter (10) from, its normal operating position. The apparatus, (34) includes a housing (42), a calibration sensor, element (52) located in the housing (42) for, sensing the parameter of interest and a tube (40), for coupling the housing (42) to the measuring, transmitter (10) thereby exposing the calibration, sensor (52) to the same parameter of interest as, the measuring sensor (20) in the measuring, transmitter (10). The apparatus …
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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 6, 1995 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.