Implantable receiver circuit
CA 1086830 A · Owner: Medtronic, Inc. · Inventors: Mcnichols, Larry A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure In an implantable receiver circuit there is provided a tuned filter responsive to externally provided radio frequency energy bursts. The receiver also includes a pair of oppositely poled diodes for respectively providing positive and negative rectified versions of the energy bursts. The cathode of one diode is coupled through a low-pass filter circuit to an output capacitor and the anode of the other diode is coupled through a low-pass filter to the control electrode of a semiconductor switching device the main, electrodes of which are coupled between the output capacitor and the point of reference potential. With this connection the switching device is rendered …
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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
- Granted September 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 1997.
- 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.