US PATENT SUBCLASS 426 / 564
.~ Foam or foamable type

Current as of: June, 1999
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426 /   HD   FOOD OR EDIBLE MATERIAL: PROCESSES, COMPOSITIONS, AND PRODUCTS

531  DF  PRODUCTS PER SE, OR PROCESSES OF PREPARING OR TREATING COMPOSITIONS INVOLVING CHEMICAL REACTION BY ADDITION, COMBINING DIVERSE FOOD MATERIAL, OR PERMANENT ADDITIVE {29}
564.~ Foam or foamable type {6}
565  DF  .~.~> Frozen {2}
568  DF  .~.~> Egg derived
569  DF  .~.~> Beverage or mix
570  DF  .~.~> Dairy cream or topping
571  DF  .~.~> Marshmellow or chiffon
572  DF  .~.~> Cream filler, fondant, frosting, icing or confection

DEFINITION

Classification: 426/564

(under subclass 531) Subject matter involving liquid compositions which are gasified or are to be gasified with air or any other gas so as to form a foam.

(1) Note. A true foam is a two-phase system composed of gas or vapor as the dispersed phase and a liquid as the

continuous phase. For purposes of this subclass the noncontinuous phase can also contain a solid in addition to the gas.

(2) Note. Materials which are liquid at ambient temperature but which attain a different physical state upon temperature fluctuation are regarded as liquids for this subclass. An example of this is ice cream which is a liquid at ambient temperature.

(3) Note. Liquid compositions which are described as being whippable, beatable, aeratable, fluffable, or which have already been whipped, beaten, aerated, or fluffed are proper herein. Included within this subclass are meringues, souffles, chiffons and marshmallow.

(4) Note. To be classified herein there must be a specific intent to have incorporated or to incorporate a gas into a liquid to form a foam. Products made by mere mixing of a liquid with air or any gas with no intent to incorporate a gas therein but merely to homogenize the liquid or to treat the liquid by contact with the gas are not proper for this subclass, and have been classified below, on some other basis.

(5) Note. A dry composition wherein water or lacteal fluid or other aqueous fluid must be added so as to solubilize the dry composition and thereby prepare a liquid which can exist as the continuous phase of a foam is proper herein. SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

10+, for foam colloid systems or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.