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Expired Canadian patentCanada

Dual compartment food package and method of using same

CA 1323609 C · Owner: Maxwell, Holly A. · Inventors: Esse, Robert L.; Maxwell, Holly A.

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 package for use in a microwave oven is sealed at both of its ends. The package is transversely folded intermediate its ends to form a first compartment in which one food product is contained, such as kernels of corn to be popped, and a second compartment in which is contained a second food product, such as a flavoring component or additive. The fold in one face wall extends inwardly and the fold in the other face wall extends outwardly, the two folds being nested together. The sides of the package are pleated. Whereas the transverse sections forming the folds are secured together in one instance and secured to the other in another instance the pleats of the other face wall are secured to …

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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 October 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 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.
FiledJuly 5, 1988
GrantedOctober 26, 1993
Term endedOctober 26, 2010
Patent numberCA 1323609 C
Classification (IPC)B65D81/34 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 5, 1988Patent grantedOct 26, 1993Term endedOct 26, 2010

Sources & verification

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