US PATENT SUBCLASS 507 / 144
.~.~ Inorganic component is asbestos

Current as of: June, 1999
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507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

100  DF  EARTH BORING {4}
140  DF  .~ Contains inorganic component other than water or clay {5}
144.~.~ Inorganic component is asbestos

DEFINITION

Classification: 507/144

Inorganic component is asbestos:

(under subclass 140) Composition wherein the inorganic component is asbestos.

(1) Note. Asbestos is a fibrous magnesium and/or iron silicate containing calcium. The term encompasses amanthius, earth or stone flax, chrysotile, anthophyllite, amosite, actinolite, tremolite, and crocidolite in the surpentine or amphibole forms.

SEE OR SEARCH THIS CLASS, SUBCLASS:

145, for a composition containing normal seawater brine without the addition of any of the components proper for subclasses 100 through 144.