Method and system in a wide area radio communication network
CA 2000529 C · Owner: Nelson, Joakim · Inventors: Nelson, Joakim; Ahl, Karl-Axel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method and a system in a wide area radio communication network the, network comprising at least two central stations (10), each central station being assigned to at least one peripheral station (11). According to the method radio transmission at specific frequencies between stations positioned along an arbitrary line is coordinated during all time intervals. The stations are provided with timing means (13), and transmitting and receiving means (14; 41 42) for transmitting and receiving during predetermined time intervals in a predetermined direction.
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 October 12, 1989 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2011.
- 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.