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Expired Canadian patentCanada

Method and apparatus for shaping processing in which discard of atm cell effectively performed

CA 2220129 C · Owner: Nec Corporation · Inventors: Ohashi, Satoshi

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Abstract From the Canadian patent

In a shaping processing apparatus which receives ATM cells as reception ATM cells which contains normal ATM cells and tagging ATM cells a, scheduling unit calculates a transmission time of the reception ATM cell based on a transmission time of a previous ATM cell belonging to a same connection as the reception ATM cell and transmitted immediately before the reception ATM cell and a predetermined time interval. A cell identifying unit identifies a connection number and cell priority of the reception ATM cell. The normal ATM cell has a higher cell priority than the tagging ATM cell. A mapping unit maps the reception ATM cell into a managing table based on the transmission time of 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 November 4, 1997 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 4, 1997
GrantedApril 30, 2002
Term endedNovember 4, 2017
Patent numberCA 2220129 C
Classification (IPC)H04L12/56

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedNov 4, 1997Patent grantedApril 30, 2002Term endedNov 4, 2017

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