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Expired Canadian patentCanada

Computer mouse with sensory alerting to prevent human injury

CA 2185263 C · Owner: At&T Corp. · Inventors: Byrne, Kevin P.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Determining by a computer mouse the pressure that an operator uses to grip the mouse and to actuate switches on the mouse and alerting the operator by the mouse if the pressure is excessive. This monitoring and alerting gives the operator immediate and consistent feedback on misuse of the mouse. In a first embodiment,the computer mouse alerts the operator to excessive pressure by means of an audio alarm. In the second embodiment, the computer mouse transmits the pressure information to a connected computer. The computer can alert the operator with anaudio message or alert the operator by displaying the alerting information on a display screen of the computer.

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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 11, 1996 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 11, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 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.
FiledSeptember 11, 1996
GrantedDecember 28, 1999
Term endedSeptember 11, 2016
Patent numberCA 2185263 C
Classification (IPC)G06F3/03

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedSep 11, 1996Patent grantedDec 28, 1999Term endedSep 11, 2016

Sources & verification

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