US PATENT SUBCLASS 507 / 143
.~.~ Inorganic component is elemental metal or alloy

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}
143.~.~ Inorganic component is elemental metal or alloy

DEFINITION

Classification: 507/143

Inorganic component is elemental metal or alloy:

(under subclass 140) Composition wherein the inorganic component is an elemental metal or alloy.

(1) Note. A metal is defined as a material having a continuous phase of any element of the periodic table except hydrogen, noble gas, a halogen, a chalcogen (oxygen, sulfur, selenium, tellurium), nitrogen, phosphorous, carbon, and boron.

(2) Note. An alloy is defined as a mixture of two or more metallic elements.

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.