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Expired Canadian patentCanada

Speech transmitting device and speech transmitting method

CA 2279752 C · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Fushimi, Wataru

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

A speech transmitting device includes a signal processing unit for carrying out plural types of speech signal processes by using a speech signal in a received packet an alignment state, detecting unit for detecting an alignment state of the received packet, and a process selecting unit for selecting a speech signal process which corresponds to the alignment state being detected by the alignment state detecting means based on a selection, reference used to select the speech signal process in correspondence to the alignment state of the received packet and, then outputting a result which is processed by the signal processing means according to the selected speech signal process.

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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 August 6, 1999 and granted September 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 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.
FiledAugust 6, 1999
GrantedSeptember 30, 2003
Term endedAugust 6, 2019
Patent numberCA 2279752 C
Classification (IPC)H04L29/02 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedAug 6, 1999Patent grantedSep 30, 2003Term endedAug 6, 2019

Sources & verification

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