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Expired Canadian patentCanada

Ideographic character processing method

CA 1259412 A · Owner: Monroe, James C. · Inventors: Monroe, James C.

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

A complete character is evoked by identifying specific characteristics of selected ones of the strokes forming the character and then looking up those stroke characteristics in a library of stroke characteristics. The stroke characteristics that may be utilized includes stroke shape, stroke size and stroke start position.

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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

  • Granted September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
  • 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 2, 1986
GrantedSeptember 12, 1989
Term endedSeptember 12, 2006
Patent numberCA 1259412 A
Classification (IPC)G06F3/00

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJune 2, 1986Patent grantedSep 12, 1989Term endedSep 12, 2006

Sources & verification

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