Communications systems
CA 2273529 A1 · Owner: Lin, Jie · Inventors: Lin, Jie; Cao, Qiang; Monogioudis, Pantelis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention described is a packet switched communications system in which a station, communicates with at least one user over downlink communication channel the, downlink communication channel being divided into a plurality of frames and each, flame including a plurality of data packets. Each data packet is directed to a predetermined user and includes transmission power control information for said user. An extended transmission power control information field is provided in at least one, data packet in every frame, which includes transmission power control information for, at least one other user of the communication system.
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 June 3, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 2021.
- 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.