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Expired Canadian patentCanada

Vessel opening top inspection method

CA 1261937 A · Owner: Toyo Glass Company Limited · Inventors: Minato, Nobuhiro

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A vessel opening top inspection apparatus which can accurately detect presence or absence of an overpress finish of a vessel such as a bottle. The apparatus comprises a projector, an image sensor a memory, a top, detecting means including a top width detecting means and a width judging means, and an overpress finish detecting means. Light projected by the projector and reflected from an opening top of a vessel in position for inspection is received by the image sensor outputs of cells of which are stored as digital amounts individually into cells of the memory specified by corresponding addresses whereafter the digital amounts are judged one after another to detect the opening top and then …

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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 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 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.
FiledFebruary 19, 1986
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1261937 A
Classification (IPC)G01N21/90

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedFeb 19, 1986Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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