Impedance synthesizer
CA 2129556 C · Owner: Fluke Corporation · Inventors: Nordeng, Arnold E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An impedance synthesizer includes an amplifier with selectable gain and a reference capacitor, resistor, or inductor for providing a plurality of synthesized impedance values. The voltage gain of the amplifier is controlled by a programmable multiplying digital-to-analog converter which allows the selection of a myriad of desired synthesized impedances with high precision and accuracy.
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 August 5, 1994 and granted November 11, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2016.
- 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.