Oscillation prevention circuit
CA 2386004 A1 · Owner: Taniguchi, Yasutoshi · Inventors: Taniguchi, Yasutoshi; Seto, Shinji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This oscillation prevention circuit is characterized in that a charging switch circuit and a transfer switch circuit are provided in series between a first amplifier circuit and a second amplifier circuit; and a control circuit turning OFF the transfer switch circuit when the charging switch circuit is ON and also turning OFF the charging switch circuit when the transfer switch circuit is ON is provided to prevent the two switch circuits from being turned ON at the same time.
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 May 13, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2024.
- 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.