Integrating multi-waveguide sensor
CA 2375425 A1 · Owner: Maccraith, Brian D. · Inventors: Ligler, Frances S.; Feldstein, Mark J.; Maccraith, Brian D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A waveguide-based sensing system includes a plurality of waveguides (16) secured within a waveguide holder (12). Each waveguide has a sensing surface (18) with attached analyte recognition elements. The end faces (22 24) of the , sensing surfaces are perpendicular (or at least approximately perpendicular) to the sensing surfaces. The sensing surfaces are directly excited by light (20) directed normal thereto and emit optical signals responsive to the presence of an analyte. These optical signals are coupled into waveguides. The optical signals travel along the length of the waveguides. The integrated optical signals emitted from the end surfaces of the fibers are then detected and …
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 March 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2022.
- 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.