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Expired Canadian patentCanada

Method and apparatus for real-time high-speed inspection of objects for identifying defects

CA 1234908 A · Owner: Beltronics, Inc. · Inventors: Bishop, Robert; Schwenke, Derek

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

Abstract, This disclosure is concerned with real-time high-speed inspection of objects involving storing digital signal mask information of optical scans of objects at different magnifications, but with substantially the same field of view, and comparing digital mask information obtained by run scans of objects-tobe-inspected, at different magnifications with the, stored mask information to identify known or unknown portions of the objects, with adaptability for rapid "teaching" of large sets of objects for storage and subsequent comparison with real objects under inspection.

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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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 20, 1984
GrantedApril 5, 1988
Term endedApril 5, 2005
Patent numberCA 1234908 A
Classification (IPC)G06K9/62 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedMarch 20, 1984Patent grantedApril 5, 1988Term endedApril 5, 2005

Sources & verification

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