Method and device for active impedance matching
CA 2713963 C · Owner: Schlumberger Canada Limited · Inventors: Hernandez-Marti, Ramon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dynamic matching of a source impedance 204 304 to a load impedance 240, 340. An embodiment of the invention is a device for active impedance matching comprising a voltage driver 410 having an output connected to a load 442 means for detecting an output current 406 from the voltage driver 410 to the load 442 means for scaling the detected output current 406 by a scaling value 416 and means for subtracting. a value representing the scaled detected output current 420 from an input signal 402 of the voltage driver 410. Another embodiment is a device for active impedance matching comprising a current driver 510 having an output connected to a load 542 means for detecting an output voltage 508 …
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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 22, 2001 and granted March 31, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 22, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.