Patent Yard Sign in
Expired Canadian patentCanada

A method of and a device for generating a signal having a predetermined quality criterion for use in or on a communication system

CA 2408809 C · Owner: Van Den Brink, Robertus Franciscus Maria · Inventors: Van Den Brink, Robertus Franciscus Maria; Van Den Heuvel, Bastiaan Matthijs

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

There is disclosed a signal having a predefined quality criterion for use with a communication systems, a method of and a system for generating such a signal, a method of testing the operation of a communication system using such a signal and a (tele)communication system arranged for operating such a method. The method for generating the signal having a predefined quality the steps of: - representing a first signal (10) comprising a plurality of frequency components each having spectral amplitude and phase properties and -, processing the represented signal by arranging (11) its spectral amplitude properties, and - processing the represented signal by arranging (11) its spectral …

Read the whole patent

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 6, 2001 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2023.
  • 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 6, 2001
GrantedSeptember 11, 2012
Term endedJuly 6, 2021
Patent numberCA 2408809 C
Classification (IPC)H04L1/24 +1 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedJuly 6, 2001Patent grantedSep 11, 2012Term endedJuly 6, 2021

Sources & verification

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