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Expired Canadian patentCanada

Polygonal information encoding article, process and system

CA 1329953 C · Owner: Batterman, Eric Paul · Inventors: Shah, Govind; Chandler, Donald Gordon; Batterman, Eric Paul

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 article of the invention is an optically readable label for storing encoded information, said label comprising a data array of a multiplicity of information-encoded polygons arranged in a predetermined geometric pattern and said poly-, gons having at least two different optical properties. A process for encoding information in an opticallyreadable data array comprised of information-encoded polygons by assigning optical properties to individual polygons in a predetermined pattern, ordering the polygons in a predetermined sequence, and printing the polygons with at least two optical properties. A process for retrieving information by optically scanning a data array of information-encoded …

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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 May 31, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 6, 1989
GrantedMay 31, 1994
Term endedMay 31, 2011
Patent numberCA 1329953 C
Classification (IPC)G06K19/06 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedApril 6, 1989Patent grantedMay 31, 1994Term endedMay 31, 2011

Sources & verification

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