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Expired Canadian patentCanada

Method for transmitting data in the access area

CA 2416443 C · Owner: Siemens Aktiengesellschaft · Inventors: Beyer, Gunter; Gieck, Reiner

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 state of the art baseband methods, the range in the access area decreases with , increasing transmission speed. When a limit is reached with a predetermined distance , and a selected speed, it is no longer possible to change over to an even greater speed. , Otherwise, the synchronism between the transmitter and receiver is lost. The invention , resolves this deficiency by combining the features of broadband technology with an , acknowledged message exchange by means of which the parameters can be controlled , between the transmitter and the receiver.

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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 11, 2001 and granted October 25, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 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 11, 2001
GrantedOctober 25, 2011
Term endedJuly 11, 2021
Patent numberCA 2416443 C
Classification (IPC)H04L12/20 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedJuly 11, 2001Patent grantedOct 25, 2011Term endedJuly 11, 2021

Sources & verification

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