Bidirectional digital wireless system transmitting and receiving asymmetric frames
CA 2417554 A1 · Owner: Taniguchi, Shohei · Inventors: Taniguchi, Shohei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herein disclosed is a bidirectional digital wireless system transmitting and receiving asymmetric transmission frames comprising: a mobile station for transmitting a plurality of uplink transmission frames each including a guard frame, portion and a data frame portion carrying a main information segment; and a base, station for receiving the uplink transmission frames and generating and , transmitting a, plurality of downlink transmission frames each including an information frame element carrying a subsidiary information segment to the mobile station whereby the, base station is operative to divide the information frame element into a predetermined, number of information frame portions …
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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 January 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2025.
- 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.