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Expired Canadian patentCanada

Process for packaging baked goods

CA 1097534 A · Owner: Unilever Limited · Inventors: Barents, Roelof H.; Lagendijk, Jan

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Bread and other baked goods are packed and partly baked in an impervious package made from a film of synthetic resin, preferably a laminate of different resins vent, means bigger than disclosed in co-pending Canadian Patent Application No. 250,566 and preventing the package bursting during baking and collapsing when cooling also limits the amount of infection sucked into the package on cooling and is sealed before the contents of the package are pasteurized to provide a product of exceptionally long shelf-life without chilling or refrigeration which the consumer quick-bakes to produce a fresh loaf or other baked goods.

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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 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 1998.
  • 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 22, 1977
GrantedMarch 17, 1981
Term endedMarch 17, 1998
Patent numberCA 1097534 A
Classification (IPC)B65B25/16 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedSep 22, 1977Patent grantedMarch 17, 1981Term endedMarch 17, 1998

Sources & verification

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