Wide range variable output amplifier apparatus with high efficiency
CA 2184225 C · Owner: Tsumura, Soichi · Inventors: Tsumura, Soichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a variable output amplifier apparatus an input, signal is distributed by a distributing unit as first signals to a plurality of variable gain units having different gains. Second signals generated from the variable gain units are combined by a combining unit to generate an output signal. A plurality of power supply control units apply power supplies to the variable gain units, respectively. The variable gain units and the power supply control units are controlled by a control unit. When one of the variable gain units and one of the power supply control units are activated the, corresponding power supply is turned ON. When they are deactivated, the corresponding power supply is turned OFF.
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 27, 1996 and granted August 17, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 27, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2018.
- 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.