Electric current measurement
CA 1295682 C · Owner: Jones, Gordon R. · Inventors: Jones, Gordon R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The magnitude of an electric current i can be determined by passing the current through a source such as a light emitting diode (1), the source being such that the distributed spectral content of the polychromatic light emitted thereby is dependent on the magnitude of the current i being passed therethrough. A detector (4) detects the intensity of the light emitted by the source at a plurality of different wavelengths and a microprocessor (7) interprets the output of the detector in terms of the current passing through the source.
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
- Granted February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
- 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.