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Expired Canadian patentCanada

Method for packet data error correction

CA 2552990 C · Owner: Koch, Hartwig · Inventors: Koch, Hartwig; Hofmann, Frank; Spreitz, Gerald

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

For error correction of packet data, in particular DAB data packets in , which code words are used over several data packets redundancy information , for error correction is added while maintaining the original packet data structure , at the expense of a free data field or useful data field. The cycle of the error , protection is selected as a multiple of a minimum size for a packet length.

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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 March 21, 2005 and granted January 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 21, 2005
GrantedJanuary 29, 2013
Term endedMarch 21, 2025
Patent numberCA 2552990 C
Classification (IPC)H04L1/00 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMarch 21, 2005Patent grantedJan 29, 2013Term endedMarch 21, 2025

Sources & verification

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