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Expired Canadian patentCanada

Method and apparatus for reducing the moisture content of tobacco

CA 1066886 A · Owner: Hauni-Werke Korber And Co. Kg · Inventors: Wochnowski, Waldemar

CIPO record

Overview

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

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Abstract From the Canadian patent

Particles of tobacco which form a continuous stream are heated during transport through a rotary drum-shaped dryer. The inlet end of the dryer receives a continuous current of heated air whose temperature is constant, and the dryer is heated by internal coils for circulating steam whose pressure is constant. The quantity of tobacco particles in the stream is varied in dependency on deviations of measured final moisture content from a desired final moisture content and/or in dependency on deviations of measured initial moisture content from anticipated initial moisture content.

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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 November 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 27, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedNovember 27, 1979
Term endedNovember 27, 1996
Patent numberCA 1066886 A
Classification (IPC)A24B3/04 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedNov 27, 1979Term endedNov 27, 1996

Sources & verification

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