Apparatus and method for measuring temperature and/or emissivity of steel strip during a coating process
CA 2192121 C · Owner: Rudolph, Ralph G. · Inventors: Rudolph, Ralph G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for measuring the surface temperature/emissivity of coated steel strip during a coating (e.g. galvannealing) process. The apparatusincludes first and second radiation sensors each having a response exponentiallyrelated to the reciprocal of absolute temperature when viewing a blackbody source and each positioned to receive focused radiation from the surface to be measuredto provide first and second signals indicative of the radiation received by the sensor, respectively. To provide the focused radiation the apparatus includes an, optical system for gathering thermal radiation emitted by the surface to be measured and focusing it onto the sensors after a first common …
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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 December 5, 1996 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2018.
- 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
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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.