Kraft General Foods, Inc.

Kraft Foods, Inc.

Warren C Rehman

Saul N Katz

Michael E Delonis

A microwave brewing device for producing freshly percolated measured quantities of coffee, and more particularly, a percolating device which is adapted to percolate coffee within a microwave oven. An open cup is adapted to be filled with water up to a specific level and volume adequate to brew at least a single cup of freshly percolated coffee beverage. The cup or the percolating device therein may be shielded with a shielding material which is impervious to the passage of microwave energy, and only the lower portion of the cup or percolating device may be provided with a gap or constituted of a microwave-transparent region permitting the passage therethrough of microwave energy in order to heat the water contained in the cup wherein the latter is positioned in the cavity of a microwave oven.

Microwave coffee percolating device

A method is disclosed for producing infusion coffee filter packs in which a first strip of filter paper is placed adjacent to a mold having a cylindrical mold pocket, and the strip of filter paper is caused, either mechanically or by a vacuum, to conform to the cylindrical mold pocket. The conforming step causes the surface area of the first strip of filter paper to stretch and increase by at least three percent relative to its area prior to the conforming step. A measured quantity of ground coffee is then deposited into the mold pocket over the filter paper conformed thereto. A second strip of filter paper is placed over the first strip of filter paper and the ground coffee in the mold pocket. The first and second strips of filter paper are then sealed together around the coffee filled mold pocket, as by a heat sealing press pressing and sealing the strips together. The filter paper is then trimmed as by die cutting to produce a half inch wide flange area extending around the mold pocket. The presence of the one half inch flange in combination with the increased surface area caused by stretching results in a brewed coffee having an increase in soluble solids extraction and a decrease in the standard deviation of soluble solids extraction.

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Flemington, NJ, United States of America

Warren C Rehman