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Expired Canadian patentCanada

Inspection and sorting of molded containers as a function of mold oforigin

CA 1280491 C · Owner: Billmaier, Joseph Frederick · Inventors: Zylka, Stephen Henry; Ahl, Alan Douglas; Billmaier, Joseph Frederick

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Abstract From the Canadian patent

A completely automated system for inspection and sorting of molded containers, such as glass bottles as a, function of mold cavity of container origin. In a first system section, finished containers are one hundred percent inspected for defects, and a cavity identification device is controlled to reject all containers from cavities associated with defective containers. The cavity identification device is also coupled to feed sampled containers from selected cavities to an automatic sampling indexer wherein the sampled containers are fed to one or more stations for testing physical container properties such as rupture pressure, wall thickness and internal volume. The cavity identification …

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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 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 25, 1986
GrantedFebruary 19, 1991
Term endedFebruary 19, 2008
Patent numberCA 1280491 C
Classification (IPC)B07C5/34 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 25, 1986Patent grantedFeb 19, 1991Term endedFeb 19, 2008

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