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Expired Canadian patentCanada

Distribution mechanism for establishing communications between user interfaces of a communication system

CA 2018068 C · Owner: Saint-Georges, Eric · Inventors: Calvignac, Jean; Lips, Jean-Pierre; Saint-Georges, Eric

CIPO record

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Abstract From the Canadian patent

The subject distribution mechanism is used in a communication system comprising a plurality of interfaces, (10 11 and 12) with each, interface connected to at least one user and able to receive and transmit information to said user(s) through information carrying means. It allows communications to be established between users selected by a central control unit (7) in a programmable way. The distribution mechanism comprises: in each interface scheduling means, responsive to a common timing signal having a period T to divide the, period into n slot periods having a slot number n being the number, of users connected to that interface to which the maximum number of users are connected, a …

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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 June 1, 1990 and granted September 6, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 1, 1990
GrantedSeptember 6, 1994
Term endedJune 1, 2010
Patent numberCA 2018068 C
Classification (IPC)H04L5/14 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 1, 1990Patent grantedSep 6, 1994Term endedJune 1, 2010

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