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Expired Canadian patentCanada

Offset compensation for switched capacitor integrators

CA 1184619 A · Owner: American Microsystems Holding Corporation · Inventors: Wegner, Glenn; Gregorian, Roubik

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Roubik Gregorian, Glenn Wegner, ABSTRACT An integrator circuit utilizing an operational amplifier (19) and switched capacitor elements (11 13 and 16), in place of resistors in such a manner as to provide compensation for voltage offsets present in the operational amplifier resulting in an output voltage (VOUT) free from the effects of voltage offsets inherent in operational amplifiers.

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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 March 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 9, 1982
GrantedMarch 26, 1985
Term endedMarch 26, 2002
Patent numberCA 1184619 A
Classification (IPC)G06G7/18

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedJuly 9, 1982Patent grantedMarch 26, 1985Term endedMarch 26, 2002

Sources & verification

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