Networked satellite and terrestrial cellular radiotelephone systems
CA 2190300 C · Owner: Motorola, Inc. · Inventors: Freeburg, Thomas A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a method of networking a satellite network and a terrestrial network. Information is communicated with a subscriber over the terrestrial network. A first portion of the information is communicated between a communications device, of the terrestrial network and a first orbiting satellite of the satellite network over a, first communication path. The information is handed-off such that a second portion, of the information is communicated between the communications device and a second, orbiting satellite of the satellite network over a second communication path.
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 March 1, 1991 and granted December 4, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.