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Expired Canadian patentCanada

Modularly structured digital communications system having operations-oriented and security-oriented components

CA 1331802 C · Owner: Lybeer, Roger · Inventors: Sonnemann, Manfred; Elstner, Siegfried; Schweiger, Franz

CIPO record

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Abstract From the Canadian patent

Modularly Structured Digital Communications System having Operations-Oriented and Security-Oriented Components. The switching-oriented, the operations-oriented and the securityoriented components are divided into three structure levels such that apparatus program modules for generating logical switching technology messages, operating technology messages or security technology messages are provided in a line technology task structure. An operations-oriented coordination program module and switching procedure program modules for the control of the operations-oriented and of the switching-oriented information and data flow are provided in an operating technology switching technology …

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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 August 30, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 30, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1988
GrantedAugust 30, 1994
Term endedAugust 30, 2011
Patent numberCA 1331802 C
Classification (IPC)H04L12/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 19, 1988Patent grantedAug 30, 1994Term endedAug 30, 2011

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