US PATENT SUBCLASS 507 / 141
.~.~ Inorganic component contains soluble potassium salt


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}
141.~.~ Inorganic component contains soluble potassium salt


DEFINITION

Classification: 507/141

Inorganic component contains soluble potassium salt:

(under subclass 140) Composition wherein the inorganic component contains a potassium ion which is soluble in the boring medium.

(1) Note. The composition of this subclass must contain potassium ion other than as a mere component in a normal seawater brine.

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.