Multiwavelength optical sensors
CA 2573097 C · Owner: University Of Southampton · Inventors: Gawith, Corin Barry Edmund; Emmerson, Gregory Daniel; Smith, Peter George Robin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical sensor comprises at least two planar Bragg gratings defined on a single substrate and arranged to receive light from a light source each , grating having a wavelength filtering response that varies with an effective modal index experienced by light propagating in the Bragg grating and a Bragg wavelength different to those of the other gratings and at least one sample , window overlying one or more of the gratings that can receive a sample of fluid that affects the effective modal index and response of the grating the , gratings filtering the light and outputting the filtered light for spectral analysis, from which the refractive index and related properties of the fluid can …
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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 July 7, 2005 and granted October 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 7, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.