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Expired Canadian patentCanada

Container and seam ring for container

CA 1312306 C · Owner: Nahill, George F. · Inventors: Farrell, Christopher J.; Nahill, George F.; Hlobil, Thomas

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 microwavable container suited to contain foodstuff over long periods of time has a plastic body and a metal closure sealed to the plastic body preferably by a double seam. A plastic seam ring having a top portion and inner and outer skirts descending therefrom is provided by itself or is mounted over the double seam to conceal the metal of at least the double seam. Means are provided on the seam ring to secure the seam ring to the container body preferably such that it is not readily removable therefrom. A central portion of the metal closure bounded by a parting line can be removed by the consumer to expose the contents of the container. With the seam ring mounted on the container body, …

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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 January 5, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 5, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 21, 1988
GrantedJanuary 5, 1993
Term endedJanuary 5, 2010
Patent numberCA 1312306 C
Classification (IPC)B65D17/40 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedSep 21, 1988Patent grantedJan 5, 1993Term endedJan 5, 2010

Sources & verification

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