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Expired Canadian patentCanada

Systems and methods of ambiguity envelope encryption scheme and applications

CA 2614596 C · Owner: Singhal, Tara Chand · Inventors: Singhal, Tara Chand

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

Ambiguity Envelope (AE) security (10) uses prior art encryption algorithms (42) and prior art encryption keys (20) and provides systems and methods for random-variant-keys (18) that are used in place of the prior art encryption keys (20). In AE an ambiguity envelope (13) is created over the transmission of data packets, so that no specific encryption key as in prior art, is used , but random-variant-keys (18) are used that are distinct and separate for each packet and may also be distinct and separate for each incoming and outgoing packet. Random-variant-keys (18) have no mathematical relationship to each other or to the prior art encryption keys (20). These random-variant-keys (18) …

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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 July 13, 2006 and granted June 23, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2026.
  • 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.
FiledJuly 13, 2006
GrantedJune 23, 2015
Term endedJuly 13, 2026
Patent numberCA 2614596 C
Classification (IPC)G07C15/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJuly 13, 2006Patent grantedJune 23, 2015Term endedJuly 13, 2026

Sources & verification

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