System for detecting voltage pulses of a particular magnitude
CA 2013541 C · Owner: Brooktree Corporation · Inventors: Colles, Joseph H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, First circuitry on an integrated circuit chip has an input terminal, preferably the only input terminal for, receiving a voltage pulse introduced to a first terminal on the chip. The first circuitry damps the negative voltage peaks of the voltage pulse at a voltage of a first magnitude inherent in the construction of the first circuitry. A pair of input transistors in the first circuitry have dimensions to provide at the input terminal to second circuitry a clamping voltage of, a first magnitude at a certain fraction of the power supply voltage. The first circuitry may include a closed loop servo amplifier which regulates the negative peaks of the pulse at the …
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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
- Filed March 30, 1990 and granted December 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2012.
- 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.