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Expired Canadian patentCanada

Satellite communication system, routing method for the system and storage device with program of the routing

CA 2240306 C · Owner: Miyata, Shunsuke · Inventors: Miyata, Shunsuke

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The management computer selects one of logical channels when a client computer requests usage of logical channel executes routing procedure to connect the selected logical channel with the client computer, and clears the routing of the logical channel from the server computer to the client computer when the client computer notifies the end of logical channel usage to the management computer.

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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 11, 1998 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2020.
  • 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 11, 1998
GrantedJuly 30, 2002
Term endedJune 11, 2018
Patent numberCA 2240306 C
Classification (IPC)H04B7/18 +1 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJune 11, 1998Patent grantedJuly 30, 2002Term endedJune 11, 2018

Sources & verification

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