Transmitter freeze/fault detection
CA 2175360 A1 · Owner: Dow Deutschland Inc. · Inventors: Gagne, Ronald; Walter, Hilger A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method for detecting in a controlled apparatus and process the freezing or failure of a sensing process and assembly comprising a sensor generating a sensor output signal and related components converting the sensor output signal into a process signal derived from the sensor output signal with, the sensor being subjected to continuous transient variations due to process noise in the controlled apparatus and process comprises the steps of: determining in real-time processing mode an estimate of the standard deviation of the process signal comparing the estimate of the standard deviation of the process signal with at least one predetermined reference value and, producing an …
Read the whole patent
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 November 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 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
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.