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Expired Canadian patentCanada

Voltage generator with voltage multiplier

CA 2014657 C · Owner: Kita, Katsuhiko · Inventors: Sakanishi, Masayuki; Ishii, Takaaki; Kita, Katsuhiko

CIPO record

Overview

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

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Abstract From the Canadian patent

This invention discloses a voltage generator circuit having a voltage regulator and a voltage generator for supplying voltage to a load. The voltage regulator is powered by a power source which supplies a first voltage level and the voltage regulator provides a regulated output at a second voltage level lower than the first voltage level. The voltage generator receives power from the regulated output and provides a multiplied output having a third voltage level. Therefore any level of voltage between the first voltage level and the third voltage level is available to the load circuit. Since the voltage regulator supplies the voltage generator with power at a regulated level, the voltage …

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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 17, 1990 and granted January 9, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2012.
  • 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 17, 1990
GrantedJanuary 9, 1996
Term endedApril 17, 2010
Patent numberCA 2014657 C
Classification (IPC)G05F1/61 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedApril 17, 1990Patent grantedJan 9, 1996Term endedApril 17, 2010

Sources & verification

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