Patent Yard Sign in
Expired Canadian patentCanada

Satellite cellular telephone and data communication system

CA 1340967 C · Owner: Torsal Technology Group Ltd. Llc · Inventors: Bertiger, Bary Robert; Peterson, Kenneth Maynard; Leopold, Raymond Joseph

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

A system for facilitating global cellular/trunked mobile communication is disclosed. This system permits communication with hand held and mobile mounted cellular telephones. The system permits two-way communications anywhere on or above the earth up to a particular height above the earth of several hundred nautical miles. The system employs a number of low-earth orbiting satellites moving about the earth in orbit. Links are provided from the satellites directly to the users and via the public switched telephone network to other users. The satellites are interconnected via linker in a ring structure surrounding the earth. Switching is performed by each of the satellites. In addition, each of …

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

  • Granted April 18, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 2017.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 13, 1989
GrantedApril 18, 2000
Term endedApril 18, 2017
Patent numberCA 1340967 C
Classification (IPC)H04W36/08 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008201120142017Application filedSep 13, 1989Patent grantedApril 18, 2000Term endedApril 18, 2017

Sources & verification

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