US PATENT SUBCLASS 436 / 137
.~.~ Fuel/air mixture or exhaust gas analysis


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

127  DF  OXYGEN CONTAINING {5}
136  DF  .~ Molecular oxygen {2}
137.~.~ Fuel/air mixture or exhaust gas analysis


DEFINITION

Classification: 436/137

Fuel/air mixture or exhaust gas analysis:

(under subclass 136) Subject matter in which the fluid tested for the presence of molecular oxygen is either a fuel/air mixture or the exhaust gas from some process.

SEE OR SEARCH THIS CLASS, SUBCLASS:

116, for analysis of gas streams for their nitrogen oxides content.

134, for analysis of gas streams for their carbon monoxide content.

143, for analysis of gas streams for the residual hydrocarbon content, flammability or hydrogen or hydrocarbon content in an air/fuel mixture.