Spatial guardbands for terrestrial reuse of satellite frequencies
CA 2460323 C · Owner: Karabinis, Peter D. · Inventors: Karabinis, Peter D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Satellite radiotelephone systems (100) include a space-based component (110) that is configured to provide wireless radiotelephone communications in a satellite footprint over a satellite radiotelephone frequency band (fD fU). , The satellite footprint is divided into a plurality of satellite cells in , which satellite radiotelephone frequencies of satellite radiotelephone frequency band are spatially reused. An ancillary terrestrial network is configured to terrestrially reuse at least one of the ancillary radiotelephone frequencies that is used in a satellite cell in the satellite footprint outside the cell and in some embodiments separated therefrom by a spatial guardband.
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 August 5, 2002 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2024.
- 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.