US PATENT SUBCLASS 106 / 157.71
.~.~.~.~ Clay

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
124.1  DF  .~ Proteinaceous material containing {21}
157.2  DF  .~.~ With element or inorganic compound except water {7}
157.7  DF  .~.~.~ Elemental silicon or inorganic silicon compound {1}
157.71.~.~.~.~ Clay

DEFINITION

Classification: 106/157.71

Clay:

(under subclass 157.7) Compositions wherein the inorganic compound containing silicon is a naturally occurring, fine grained, earthy, hydrated aluminum silicate containing composition; i.e., clay.

(1) Note. The term "clay" includes materials commonly known as attapulgite, bentonite, fuller's earth, halloysite, illite, kaolinite, and montmorillonite.