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Expired Canadian patentCanada

Arrangement for processing sensor signals

CA 2042396 C · Owner: Endress U. Hauser Gmbh U. Co. · Inventors: Schneider, Georg; Wagner, Richard

CIPO record

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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 arrangement serves to process sensor signals which are furnished by a measuring sensor and by one or more further sensors. The measuring sensor generates a measuring effect which depends on a physical measured quantity to be determined and on physical disturbance quantities and each further sensor generates a measuring effect which depends substantially only on physical disturbance quantities. The arrangement includes a signal processing circuit which receives the measuring effects as input quantities. By analog processing of the sensor signals the signal processing circuit furnishes an output quantity, the ratio of which to a reference quantity in dependence upon the measuring …

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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 September 10, 1990 and granted November 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 10, 1990
GrantedNovember 23, 1999
Term endedSeptember 10, 2010
Patent numberCA 2042396 C
Classification (IPC)G01D3/03 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedSep 10, 1990Patent grantedNov 23, 1999Term endedSep 10, 2010

Sources & verification

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