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Expired Canadian patentCanada

Tobacco product consisting of a pre-portioned tobacco supply surrounded by cigarette paper of tubular shape, and method of and device for preparing such a tobacco product

CA 1235039 A · Owner: Efka-Werke Fritz Kiehn G.M.B.H. · Inventors: Ruppert, Heinrich W.; Gatschmann, Klaus G.

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Abstract From the Canadian patent

Tobacco product, consisting of a pre-portioned tobacco supply surrounded by cigarette paper of tubular shape. The tobacco supply is configured as a dimensionally stable tobacco strand , which is matched to the tobacco charge of the finished cigarette and is unsmokable by itself but consists completely of smokable material, and it is provided for the self-making of either filterless or filter-tipped cigarettes. Preferably, the tobacco supply comprises an air permeable strand wrapper of smokable material e.g. of tobacco sheet material. To facilitate insertion of the preformed dimensionally stable tobacco strand into a prefabricated tubular cigarette paper wrapper a, funnel-like sleeve is …

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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 April 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 26, 1985
GrantedApril 12, 1988
Term endedApril 12, 2005
Patent numberCA 1235039 A
Classification (IPC)A24C1/00 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedFeb 26, 1985Patent grantedApril 12, 1988Term endedApril 12, 2005

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