Sensor
CA 2420586 C · Owner: Independence Technology, L.L.C. · Inventors: Yoerger, Dana R.; Bradley, Albert M.; Nergaard, David K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The relative position of two members is determined based upon a detected relative , intensities of first and second colors of light. The intensity balance associated with relative , occlusion of first and second color filter portions on one member by a mask on the other , member. An exemplary use is in rotational position sensing within a limited rotation range. , With a given compliance between the two members the position sensing can be , used as a proxy for torque sensing.
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 3, 2003 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2025.
- 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.