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Expired Canadian patentCanada

Controlled headspace gas packaging of aseptic dairy products

CA 1306141 C · Owner: Streiff, Paul J. · Inventors: Streiff, Paul J.; Andersen, Delmar L.; Keller, David J.

CIPO record

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Abstract From the Canadian patent

TITLE OF THE INVENTION:, CONTROLLED HEADSPACE GAS PACKAGING OF ASEPTIC DAIRY PRODUCTS, ABSTRACT OF THE DISCLOSURE: A process is disclosed for the aseptic packaging of fluid dairy products having improved stability and flavor. A selected gas is injected into the sterile milk or other fluid dairy product. The resulting milk-gas mixture is then filled into a container under aseptic conditions. The fill volume of the mixture is such as to leave no free space in the container when it is closed. However on standing the gas and the milk separate to form a gas-filled, headspace. The injection gas is preferably nitrogen. For taste improvement, the gas may be selected so that the oxygen content of …

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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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
  • 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 29, 1986
GrantedAugust 11, 1992
Term endedAugust 11, 2009
Patent numberCA 1306141 C
Classification (IPC)A23C3/02 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 29, 1986Patent grantedAug 11, 1992Term endedAug 11, 2009

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