US PATENT SUBCLASS 426 / 447
.~.~.~ By sudden pressure release from exteriorly applied pressurized zone

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

665  DF  PROCESSES {25}
443  DF  .~ Preparation of product which is dry in final form {7}
445  DF  .~.~ Size increase by puffing, or pore forming of solid material by heating {3}
447.~.~.~ By sudden pressure release from exteriorly applied pressurized zone {2}
448  DF  .~.~.~.~> From extrusion zone using mechanical pressure
449  DF  .~.~.~.~> Of cereal

DEFINITION

Classification: 426/447

(under subclass 445) Processes involving the treatment of a material by subjecting the material to exteriorly applied pressure, whether gaseous or other, and then suddenly releasing the pressure to effect an expansion of the treated material.

SEE OR SEARCH CLASS

99, Foods and Beverages: Apparatus,

238+, for cereal puffing apparatus.