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Expired Canadian patentCanada

Programmable calibrated optical fiber thermometer system

CA 1263922 C · Owner: Winslow, Alan K. · Inventors: Winslow, Alan K.; Dils, Ray R.

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

A programmable calibrated optical fiber thermometer system includes a sensor for transmitting light energy which varies with temperature in a region to be tested. The light energy is detected by an optical detector and linearly converted to an output signal. A signal processor calculates the temperature from this signal using fundamental radiation laws. The system may be calibrated for variations in system response caused by changes in the optical sensor; system electronics and ambient temperature by measuring the changes and incorporating the measurements into a temperature algorithm.

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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 December 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 19, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 3, 1986
GrantedDecember 19, 1989
Term endedDecember 19, 2006
Patent numberCA 1263922 C
Classification (IPC)G01J5/18 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJan 3, 1986Patent grantedDec 19, 1989Term endedDec 19, 2006

Sources & verification

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