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Expired Canadian patentCanada

Pen operated processing system with speed-responsive switching

CA 2043937 C · Owner: Tanaka, Hidekazu · Inventors: Tanaka, Hidekazu

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

In an information processing system in which predetermined information is processed on the basis of coordinate data x y, the coordinate data x, y is , inputted through a coordinate inputting means such as a pen and tablet arrangement. Inputted loci are, detected by sequentially accepting the coordinate data x y. The processing , mode of the, information processing system is switched according to the configuration of the inputted loci. By switching the processing mode in response to the configuration of the inputted loci, the, operation mode can be switched. For example by moving the pen on the tablet , in a jumped or reversed direction manner, the processing mode such as storing of a …

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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 5, 1991 and granted October 10, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2013.
  • 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 5, 1991
GrantedOctober 10, 2000
Term endedJune 5, 2011
Patent numberCA 2043937 C
Classification (IPC)G06F3/03

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedJune 5, 1991Patent grantedOct 10, 2000Term endedJune 5, 2011

Sources & verification

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