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Expired Canadian patentCanada

Package containing a water-in-oil fat dispersion and process for producing the same

CA 1281006 C · Owner: Havenstein, Alfred G. · Inventors: Schnell, Dagmar; Havenstein, Alfred G.; Kahle, Werner

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 is described containing margarine or a similar spread, at least the surface of which that is not in contact with the walls of the package being provided with a thin coating formed by a substantially pore-free, edible fat layer (6) which does not contain a discontinuous aqueous phase, is not separately perceptible to the average consumer without auxiliary means and may contain a non-aqueous, physiologically acceptable filling agent, such as gas, dispersed therein. This package decreases, among other things the risk of mould formation and discolouration on the free surface of the spread contained therein.

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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 March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 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.
FiledApril 3, 1987
GrantedMarch 5, 1991
Term endedMarch 5, 2008
Patent numberCA 1281006 C
Classification (IPC)B65D85/74 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 3, 1987Patent grantedMarch 5, 1991Term endedMarch 5, 2008

Sources & verification

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