Rf communications system operable in the presence of a repetitive interference source and related methods
CA 2258056 A1 · Owner: Nelson, George R. · Inventors: Nelson, George R.; Roberts, Richard D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An RF communication system for operating of a repetitive RF interference source powered from an AC power line. The system uses redundant transmission synchronized to the power line to ensure accurate reception by a second device. The, RF communication system comprises a first device powered from an AC power line which also powers the repetitive RF interference source. The first device comprises, an RF transmitter for transmitting in a frequency band of the repetitive RF interference source, a power line sensor and a data transmit controller, which, generates a plurality of data packets with each data packet including an error detecting portion. The data transmit controller also operates …
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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 December 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2020.
- 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.