Apparatus for use with capacitive presence detection systems
CA 2424159 A1 · Owner: Michael, Stephen · Inventors: Michael, Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus is provided for use with capacitive presence detection systems. The apparatus includes a sensor (10) in the form of a tape which may be adhesively affixed to an object such as a parking gate (4) arm. Additionally spaces for use in mounting the sensors (40) are disclosed which increase the depth of field of the sensor. The tape is a sandwich having a plastic film top layer, a metallic foil middle layer, and a plastic bottom layer having an adhesive material.
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 October 2, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2023.
- 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.