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Expired Canadian patentCanada

Communication access system with distributed processing

CA 2222151 C · Owner: Schoo, Daniel L. · Inventors: Schoo, Daniel L.; Varman, Richard J.

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

A method and apparatus for distributing protocol processing among a plurality of computing platforms. Data communications equipment (10) such as Remote Access Devices, Communication Servers, Terminal Servers and Dial-up Routers , provide single user or large-scale multiple user communication access to various computing environments. The equipment costs and performance of levels of providing such access equipment is related to the amount of CPU processing capability and memory required to support the desired number of serial communications links. It is common to use protocols that terminate in their entirely in the same processing machine. This invention encompasses method developed …

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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 June 7, 1996 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 7, 1996
GrantedAugust 14, 2001
Term endedJune 7, 2016
Patent numberCA 2222151 C
Classification (IPC)H04M11/06 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedJune 7, 1996Patent grantedAug 14, 2001Term endedJune 7, 2016

Sources & verification

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