US PATENT SUBCLASS 436 / 154
.~.~ Flame ionization

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

149  DF  MEASUREMENT OF ELECTRICAL OR MAGNETIC PROPERTY OR THERMAL CONDUCTIVITY {3}
153  DF  .~ Of an ionized gas {1}
154.~.~ Flame ionization

DEFINITION

Classification: 436/154

Flame ionization:

(under subclass 153) Subject matter wherein basis for analysis is the change in conductivity of a standard flame by inclusion therein of a gaseous material to be analyzed.

(1) Note. The standard flame is usually hydrogen.

SEE OR SEARCH CLASS

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

54, for apparatus for carrying out the process of this subclass.