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Expired Canadian patentCanada

Converter circuit for switching of a multiplicity of switching voltage levels

CA 2587421 C · Owner: Meysenc, Luc · Inventors: Meysenc, Luc; Barbosa, Peter; Steimer, Peter

CIPO record

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Abstract From the Canadian patent

A converter circuit is specified for switching of a multiplicity of switching voltage levels which have n , first switching groups (1.1 ... 1.n) for each phase , (R, S, T), with the n-th first switching group (1.n) being formed by a first drivable bidirectional power semiconductor switch (2) and a second drivable bidirectional power semiconductor switch (3) and with , the first first switching group (1.1) to the (n-1)-th switching group (1.(n-1)) each being formed by a first drivable bidirectional power. semiconductor switch (2) and a second drivable bidirectional power semiconductor switch (3), and by a capacitor (4) which is connected to the first and second drivable …

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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 November 22, 2004 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 22, 2004
GrantedApril 17, 2012
Term endedNovember 22, 2024
Patent numberCA 2587421 C
Classification (IPC)H02M7/48

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedNov 22, 2004Patent grantedApril 17, 2012Term endedNov 22, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.