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Expired Canadian patentCanada

Touchscreen keyboard support for multi-byte character languages

CA 2244431 C · Owner: Ranieri, Robert · Inventors: Ranieri, Robert

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

The invention relates to the entering, displaying and processing of text of various human languages consisting of multi-byte characters when the text is entered by means of a touchscreen terminal keyboard into a programmed computer system. The computer system includes an operating system and other software providing means for converting inputs from the touchscreen keyboard into displayed characters and a keyboard definition file for processing by the computer system to provide the touchscreen keyboard on the display. The keyboard definition file includes means for specifying a national language and means for supporting inputs of multi-byte character language. A touchscreen support module …

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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 July 30, 1998 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 30, 1998
GrantedFebruary 19, 2002
Term endedJuly 30, 2018
Patent numberCA 2244431 C
Classification (IPC)G06F3/01

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJuly 30, 1998Patent grantedFeb 19, 2002Term endedJuly 30, 2018

Sources & verification

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