Impedance monitoring system and method
CA 2584613 C · Owner: Cloete, Johannes Hendrik · Inventors: Cloete, Johannes Hendrik; De Villiers, Wernich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system (10) for monitoring PLC impedance of a phase conductor 12.1 of a high voltage overhead power transmission line (OHTL) 12 comprises a hybrid 40 comprising a first port (40), a second port (40.2) and a third port (40.3). The hybrid is configured to divide power received at the first port between the second and third ports, at least partially to isolate the second port from power received at the third port and at least partially to isolate the third port from power received at the second port. The isolation is a function of an impedance connected to the first port 40.1. The first port is connected to the phase conductor. The second port is connected to be driven by an …
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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 October 28, 2005 and granted April 29, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.