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Expired Canadian patentCanada

Selectively called radio receiver in which bit rate detection is controlled with a predetermined range

CA 2108244 C · Owner: Ide, Motoki · Inventors: Ide, Motoki

CIPO record

Overview

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

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Abstract From the Canadian patent

In a selectively called radio receiver in which a demodulated signal of a specific bit rate is produced with battery saving kept in synchronism with the demodulated signal a bit rate detecting, unit detects the bit rate with a controllable sensitivity while the synchronism is lost. A bit rats detecting control arrangement controls the sensitivity within a predetermined sensitivity range The bit rate detecting unit may misdetect the bit rate with a variable misdetection rate which is accumulated to an incremented amount from an initial amount representative of no disdetection while the synchronism is lost. The bit rate detection control arrangement may decrmement the misdetection rate to the …

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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 October 12, 1993 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 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.
FiledOctober 12, 1993
GrantedDecember 28, 1999
Term endedOctober 12, 2013
Patent numberCA 2108244 C
Classification (IPC)H04B1/16 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedOct 12, 1993Patent grantedDec 28, 1999Term endedOct 12, 2013

Sources & verification

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