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Expired Canadian patentCanada

Nanoelectronic devices and circuits

CA 2444681 C · Owner: Omling, Par · Inventors: Song, Aimin; Omling, Par

CIPO record

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Abstract From the Canadian patent

Diode devices with superior and pre-settable characteristics and of nanometric dimensions, comprise etched insulative lines (8 16, 18) in a conductive , substrate to define between the lines charge carrier flow paths formed as , elongate channels (20) at least 100 nm long and less than 100 nm wide. The current-voltage characteristic of the diode devices are similar to a conventional diode, but both the threshold voltage (from 0V to a few volts) and the current level (from nA to µA) can be tuned by orders of magnitude by changing the device geometry. Standard silicon wafers can be used as substrates. A full family of logic gates such as OR, AND, and NOT, can be , constructed based on …

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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 18, 2002 and granted December 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2024.
  • 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 18, 2002
GrantedDecember 17, 2013
Term endedApril 18, 2022
Patent numberCA 2444681 C
Classification (IPC)H01L27/06 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedApril 18, 2002Patent grantedDec 17, 2013Term endedApril 18, 2022

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