US PATENT SUBCLASS 436 / 31
.~.~ Removing and testing solid samples

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

25  DF  GEOCHEMICAL, GEOLOGICAL, OR GEOTHERMAL EXPLORATION {4}
29  DF  .~ For petroleum oils or carbonaceous minerals {2}
31.~.~ Removing and testing solid samples {1}
32  DF  .~.~.~> Analyzing evolved gas {1}

DEFINITION

Classification: 436/31

Removing and testing solid samples:

(under subclass 29) Processes or compositions where soil, rock, core samples, etc., are removed from the earth's crust and chemically analyzed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

85, through 145, for tests for particular compounds not claimed as evolved from a mineral sample.

139, for tests for particular hydrocarbons.

SEE OR SEARCH CLASS

73, Measuring and Testing,

152.07, 152.09, and 152.11 for core sample analysis for making a borehole formation logging wherein the analysis is not of a purely electrical type or of a purely magnetic type.