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Expired Canadian patentCanada

High dc voltage generator

CA 1213365 A · Owner: Victor Company Of Japan, Limited · Inventors: Hishiki, Hideo; Kamiyama, Yukio

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

High DC Voltage Generator", ABSTRACT, The primary winding of a stepup transformer is energized by a time-varying current for inducing a high voltage pulse in the secondary winding of the transformer in response to a rapid change in the time-varying current. A plurality of first diodes and a plurality of capacitors are arranged to form a voltage multiplier for multiplying the amplitude of the high voltage pulse and storing the multiplied pulse on the capacitors to develop a high DC voltage. A second diode is connected in a circuit between one end of the secondary winding and ground so that a current may flow in a loop through the first and second diodes in response to the high voltage pulse …

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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

  • Granted October 28, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 21, 1984
GrantedOctober 28, 1986
Term endedOctober 28, 2003
Patent numberCA 1213365 A
Classification (IPC)H04N3/18 +1 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMarch 21, 1984Patent grantedOct 28, 1986Term endedOct 28, 2003

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