Impedance emulator
CA 2188128 C · Owner: Jordan, Mark · Inventors: Jordan, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low capacitance impedance emulator suitable for active conductor termination. This impedance emulator includes an emulating FET (12) and a control circuit (16) coupled to the gate of the emulating FET for maintaining the FET in a linear region of operation. The control circuit includes a control FET (20) an impedance setting resistor (22), and an amplifier (24). The control FET is driven in a closed-loop fashion so that the impedance of the control FET has a known relationship with respect to that of the resistor. The output of the amplifier controls the conduction of both the emulating and control FETs so that the emulating FET provides an impedance proportional to that of the control …
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 April 20, 1995 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2017.
- 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.