Power supply for induction heating or melting
CA 2456473 A1 · Owner: Inductotherm Corp. · Inventors: Nadot, Vladimir V.; Fishman, Oleg S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rectifier/inverter power supply (10) for use with induction heating or melting apparatus includes a tuning capacitor (C1) connected across the output of the rectifier (14) and input of the inverter (20). The tuning capacitor(C1) forms a resonant circuit with an inductive load coil (L9) at the operating frequency of the inverter (20). Additionally the load coil (L9) may comprise , an active load coil connected to the output of the inverter (20) and a passive load coil, in parallel with a resonant tuning capacitor for an improved , efficiency circuit.
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 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 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.