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Expired Canadian patentCanada

Inspecting and sorting of glass containers

CA 1249978 A · Owner: Owens-Illinois, Inc. · Inventors: Lovalenti, Sam; Rogge, William H.

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Abstract From the Canadian patent

BCF/RCC/gm 15555, INSPECTING AND SORTING OF GLASS CONTAINERS Abstract of the Disclosure, A method and apparatus for inspecting and sorting transparent containers such as glass containers having defects in the container sidewalls, and for distinguishing between commercially acceptable and unacceptable defects on the basis of defect type and size. A light source is positioned to direct diffused illumination through the sidewall of a container under inspection as the container is rotated about its central axis with the intensity of the illumination varying across the light source transversely of such axis as a predetermined function of transverse position. In specific disclosed embodiments of …

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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 February 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 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.
FiledMarch 11, 1985
GrantedFebruary 14, 1989
Term endedFebruary 14, 2006
Patent numberCA 1249978 A
Classification (IPC)B07C5/34 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedMarch 11, 1985Patent grantedFeb 14, 1989Term endedFeb 14, 2006

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