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Expired Canadian patentCanada

Data transfer method and apparatus having dual frequency operation

CA 2118719 C · Owner: Motorola Mobility, Inc. · Inventors: Tripp, Jeffrey W.; Paggeot, Bruce; Shim, Jae H.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The present disclosure includes a discussion of a data transfer system. The data transfer system is responsible for tranferring data to and from a radio transceiver (107) and all the corresponding peripheral device (111 113) contained in within the, radio telephone (103). The data transfer system includes a data bus (109) a master, controller within the transceiver (107) and a peripheral controller within each of the peripheral devices. The data transfer system has an initialization state and a operational state. During the initialization state the data bus (109) operates at a lower frequency than during the operational state. The lower speed increases the time allowed for the assignment of …

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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 July 29, 1993 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 29, 1993
GrantedDecember 22, 1998
Term endedJuly 29, 2013
Patent numberCA 2118719 C
Classification (IPC)H04B1/38 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedJuly 29, 1993Patent grantedDec 22, 1998Term endedJuly 29, 2013

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.