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Expired Canadian patentCanada

Method and nozzle for mixing mediums of different viscosity

CA 1293501 C · Owner: Waagner-Biro Aktiengesellschaft · Inventors: Loquenz, Heinz; Meissl, Siegfried

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Abstract From the Canadian patent

A multi-stage especially a two-stage mixing of two, media of different viscosity and a respective mixing, nozzle provided therefor. The first medium of higher viscosity is divided into two or more partial streams. The first partial stream is passed through an injector in, which the second medium of lower viscosity is mixed in in particular tangentially. In an adjoining mixing chamber the second partial stream of the first medium is admixed into the flowing mixture of the first partial stream and the second medium of lower viscosity and envelops the same preferably in an opposite or counter-twist to the flowing twist of the first mixture of the first partial stream and second medium. This 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 December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 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.
FiledNovember 25, 1987
GrantedDecember 24, 1991
Term endedDecember 24, 2008
Patent numberCA 1293501 C
Classification (IPC)B01F5/00 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 25, 1987Patent grantedDec 24, 1991Term endedDec 24, 2008

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