Sensor for remote detection of objects
CA 2245740 C · Owner: Quinones, Christian · Inventors: Tyren, Carl; Quinones, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sensor for remote detection of objects in a surveillance zone (10) is preferably intended to be used in an article surveillance zone which further , has at least one transmitter means (11 13) and at least one receiver means , (12 15) for transmitting and receiving, respectively electromagnetic radio-, frequent signals in the surveillance zone and at least one modulating means , (16) for generating a modulation field in the surveillance zone. The sensor is arranged to transmit an electromagnetic reply signal at the reception of electromagnetic energy from the transmitter means said reply signal being , dependent on the modulation field and being receivable by the receiver means. A …
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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 February 11, 1997 and granted May 27, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2019.
- 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.