Spectrometer normalization system
CA 2232243 C · Owner: Bayer Corporation · Inventors: Nelson, Christine D.; Dosmann, Andrew J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for normalizing measurement obtained from spectrometers to correct for measurement biases in individual spectrometers. The normalization system is adapted for use in spectrometers having an optical assembly for obtaining characteristic data from a test sample. A normalization factor is obtained in each spectrometer by placing a holographic dispersion filter between the light source and detector in the position normally occupied by the test sample the filter having been encoded with a, symbol representing a nominal value of light expected to pass through the filter. The spectrometer a determines the value of light passing through the filter and calculates a normalization factor …
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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 March 16, 1998 and granted July 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 2020.
- 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.