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Expired Canadian patentCanada

Generating and implementing a communication protocol and interface for high data rate signal transfer

CA 2459941 C · Owner: Steele, Brian · Inventors: Wiley, George Alan; Steele, Brian; Zou, Qiuzhen

CIPO record

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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 data Interface for transferring digital data between a host and a client over a communication path using packet structures linked together to form a communication protocol for communicating a pre-selected set of digital control and presentation data. The signal protocol is used by link controllers configured to generate, transmit, and receive packets forming the communications protocol, and to form digital data into one or more types of data packets, with at least one residing in the host device and being coupled to the client through the communications path. The interface provides a costeffective, low power, bi-directional, high-speed data transfer mechanism over a short-range …

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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 September 6, 2002 and granted September 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 6, 2002
GrantedSeptember 17, 2013
Term endedSeptember 6, 2022
Patent numberCA 2459941 C
Classification (IPC)H04L25/45 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedSep 6, 2002Patent grantedSep 17, 2013Term endedSep 6, 2022

Sources & verification

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