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Expired Canadian patentCanada

Low leakage and data retention circuitry

CA 2738882 C · Owner: Conversant Intellectual Property Management Inc. · Inventors: Hillman, Daniel L.; Walker, William G.; Zampaglione, Michael A.

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

An integrated circuit includes first circuitry (1010) and sleep transistor circuitry (SL3). The first circuitry receives input signals and processes the input signals. The first circuitry also retains data in a sleep signal that has a negative voltage. The sleep circuitry reduces power consumption of the first circuitry in the sleep state to have low leakage based on the sleep signal while retaining the data in the first circuitry.

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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 January 20, 2005 and granted January 12, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2025.
  • 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.
FiledJanuary 20, 2005
GrantedJanuary 12, 2016
Term endedJanuary 20, 2025
Patent numberCA 2738882 C
Classification (IPC)H03K17/68 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 20, 2005Patent grantedJan 12, 2016Term endedJan 20, 2025

Sources & verification

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