US PATENT SUBCLASS 426 / 474
.~ Including gas-liquid contact


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

665  DF  PROCESSES {25}
474.~ Including gas-liquid contact {2}
475  DF  .~.~> Separating, including gas contact {1}
477  DF  .~.~> Preparing carbonated or effervescent liquid


DEFINITION

Classification: 426/474

(under subclass 665) Processes involving the overt treatment of a liquid with a gaseous material.

(1) Note. This subclass includes only those treatments wherein there is a desired and intentional contact between a gas and a liquid, e.g., whipping, aerating, foaming, carbonating, steaming, etc..

SEE OR SEARCH THIS CLASS, SUBCLASS:

487+, for a method of removing air, unwanted gas, or an unwanted odoriferous material from a liquid, wherein the liquid treated may contact air.

489, for a method of removing a desired liquid from a solid wherein the desired liquid may have contacted air.

492+, for the vaporization of a liquid to effect a separation.

506+, for a method of contacting a solid food with steam. 519, for a method of mixing or agitation wherein air or a different gas may be inadvertently incorporated into a food.

SEE OR SEARCH CLASS

62, Refrigeration,

69+, for processes including agitating of a confined body of a material during freezing wherein air or gas is introduced into a material being frozen; subclass 121 for processes specialized to cooling a material involving gas-liquid contact.

95, Gas Separation: Processes,

149+, for processes of gas separation involving liquid contacting.

159, Concentrating Evaporators,

47+, for methods of drying liquids.

203, Distillation: Processes, Separatory,

49, for processes directed to passing a normally gaseous substance through a material being distilled.