Isolated current mirror
CA 2091371 A1 · Owner: Empi, Inc. · Inventors: Fabian, Liboslav
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optically isolated current mirror provides an isolated output signal as a function of an input signal. A first optical isolator generates an isolated control signal as a function of the input signal. An amplifier is connect d in a voltage follower configuration which supplies the output signal as a function of the control signal and a feedback signal. A second optical isolator generates the feedback signal as a function of the output signal.
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 March 10, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2015.
- 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.