Patents Assigned to Douwe Egbets Koninklijke Tabaksfa-Briek-Koffiebranderijen-Theehandel N.V.
  • Patent number: 5204136
    Abstract: A process for preparing an extract from ground, roasted coffee is described. A primary extract is prepared by exhaustive primary extraction with water or an aqueous solution in one or more extraction cells including one cell to which extraction liquid is supplied. A secondary extract is prepared by secondary extraction with water or an aqueous solution in one or more extraction cells including one cell from which secondary extract is drawn off. The process is conducted so that when the primary extraction cell to which the water or the aqueous solution is supplied has been exhaustively extracted, this cell is connected through to the secondary extraction as an extraction cell from which secondary extract is withdrawn, and the first quantity of extract from the cell connected through, which quantity corresponds approximately to the liquid contents of said cell, is supplied to the primary extraction as an extraction liquid.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: April 20, 1993
    Assignee: Douwe Egbets Koninklijke Tabaksfa-Briek-Koffiebranderijen-Theehandel N.V.
    Inventor: Adrianus C. M. Hellemons