US PATENT SUBCLASS 422 / 78
.~.~ Including means for pyrolysis, combustion, or oxidation

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

50  DF  ANALYZER, STRUCTURED INDICATOR, OR MANIPULATIVE LABORATORY DEVICE {11}
68.1  DF  .~ Means for analyzing liquid or solid sample {11}
78.~.~ Including means for pyrolysis, combustion, or oxidation {2}
79  DF  .~.~.~> Biological, chemical, or total oxygen demand (i.e., BOD, COD, TOD)
80  DF  .~.~.~> And means directly analyzing evolved gas

DEFINITION

Classification: 422/78

Including means for pyrolysis, combustion, or oxidation:

(under subclass 68.1) Apparatus having means for heating the substance to be analyzed either in the presence or absence of oxygen to cause a chemical reaction; e.g., oxidation, etc., or thermal decomposition of the material.