Patent Yard Sign in
Expired Canadian patentCanada

Optimized digital operational encoding and input method of world character information and information processing system thereof

CA 2491734 C · Owner: Su, Rongbin · Inventors: Su, Rongbin

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

Optimized digital operational encoding and input method of world character information and information processing system thereof are directed to digital encoding technology of world character information. It thoroughly solves the conflict between the simplicity and high efficiency for encoding the , world character information, and characterized by: according to the pronunciation and the glyph information of world characters perform the , digital operational encoding \grr'the world character information with ten numerals 0-9 unifiedly by means of the encoding method operated with addition and subtraction by areas and positions. The method and device of the present invention takes …

Read the whole patent

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, 2003 and granted January 21, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2025.
  • 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, 2003
GrantedJanuary 21, 2014
Term endedJune 5, 2023
Patent numberCA 2491734 C
Classification (IPC)G06F3/02

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedJune 5, 2003Patent grantedJan 21, 2014Term endedJune 5, 2023

Sources & verification

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