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Expired Canadian patentCanada

High voltage power supply having multiple high voltage generators

CA 2216168 C · Owner: Krichtafovitch, Igor A. · Inventors: Sinitsyna, Irina Z.; Krichtafovitch, Igor A.

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Abstract From the Canadian patent

A high voltage power supply (40) having a plurality of high voltage generators (50a, 50b,... 50j) that produce a controlled current in a load (24) having a capacitive component. Each high voltage generator consists of a pulsewidthmodulated (PWM) inverter, a high voltage transformer and a high voltage full , bridge rectifier. The high voltage generators are divided into three groups: Group I, Group II, and Group III. During a driving mode of power supply operation, the Group I, Group II, and Group III high voltage generators produce an output voltage (Vgen) from the power supply which exceeds a voltage (Vc) across the capacitive component of the load causing the current in the , load …

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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 April 5, 1996 and granted June 27, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 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.
FiledApril 5, 1996
GrantedJune 27, 2000
Term endedApril 5, 2016
Patent numberCA 2216168 C
Classification (IPC)H02M3/28 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedApril 5, 1996Patent grantedJune 27, 2000Term endedApril 5, 2016

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