Fluorescent optical sensor
CA 2213482 C · Owner: Colvin, Arthur E. Jr. · Inventors: Colvin, Arthur E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluorescent sensor (10) for detecting the presence and amount of an analyte. The fluorescent sensor (10) has a photodetector (12) a high pass filter (14) located adjacent the photodetector (12), and a glass layer (80) located adjacent the high pass filter (14). An indicator layer (18) is located adjacent the glass layer (80) and a light emitting diode (20) is embedded in the indicator layer. The indicator layer has indicator molecules that provide a fluorescent emission as a result of light from the light emitting diode (20). The indicator layer (18) also allows an analyte to diffuse into it and the presence of the analyte reduces the amount of light emitted from the indicator molecules …
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 February 15, 1996 and granted January 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 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
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.