Mobile station with down-link frame numbering
CA 2267367 C · Owner: Fujio, Hiroyuki · Inventors: Uchida, Yoshinori; Fujio, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a mobile communication system which includes mobile switching centers (6 to 8) which have TDMA signals and time slot sharing and frequency channel sharing time divided CDMA signals and has a controlling function of allocating the signals on a time base and a frequency base and wherein mobile stations (15 to 33) are radio connected to radio base stations (11 to 31), connected to the mobile switching centers by a, multiple connection system and said mobile stations having a high speed data transmission function can be radio connected to the radio base stations also by high speed data channels, information of time slots in frames of down-links transmitted from two adjacent radio base …
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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 September 30, 1997 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2019.
- 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.