Power controller
CA 2076711 C · Owner: Nec Corporation · Inventors: Hatakeyama, Naoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to this invention, a power, controller includes a power amplifier a detector, a, digital/analog converter and a power control unit. The, amplifier amplifies a high-frequency signal input on the basis of an applied control voltage to output a high-frequency power. The detector detects the high-frequency power from the power amplifier to output a detection voltage. The digital/analog converter converts externally input digital data into a reference voltage to output the reference voltage. The power control unit compares the reference voltage from the digital/analog converter means with the detection voltage from the detector to output the control voltage. The digital/analog …
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 August 24, 1992 and granted December 2, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2014.
- 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.