Patent Yard Sign in
Expired Canadian patentCanada

Packet route scheduling in a packet cross connect switch system for periodic and statistical packets

CA 2015402 C · Owner: Dighe, Rajiv S. · Inventors: Dighe, Rajiv S.; May, Carl J. Jr.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Routing of packets in a packet cross-connect switch is determined based on the particular type of packet i.e. statistical or, periodic, grade of service assigned to the packet e.g. minimum delay, the, actual queuing delay at output ports assigned to the particular packet destination and the status of the assigned output ports. Additionally for, periodic type packets the routing decision is also based on whether an interval is reserved for transmission of periodic packets at the assigned output ports. The routing decision is also based under certain conditions on whether or not the packet has been previously scheduled over an alternate route. The actual queuing delay at the assigned output …

Read the whole patent

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 25, 1990 and granted January 7, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 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.
FiledApril 25, 1990
GrantedJanuary 7, 1997
Term endedApril 25, 2010
Patent numberCA 2015402 C
Classification (IPC)H04Q3/42 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedApril 25, 1990Patent grantedJan 7, 1997Term endedApril 25, 2010

Sources & verification

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