US PATENT SUBCLASS 426 / 423
.~.~ Inorganic silicon containing material, e.g., clay, etc.

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

665  DF  PROCESSES {25}
422  DF  .~ Treatment of liquid with nongaseous material other than water per se {2}
423.~.~ Inorganic silicon containing material, e.g., clay, etc.

DEFINITION

Classification: 426/423

(under subclass 422) Processes involving the use of an inorganic silicon material, e.g., clay, hectorite, diatamaceous earth, bentonite, etc..