US PATENT SUBCLASS 205 / 784.5
.~.~.~.~ In combustible gas (e.g., air/fuel mixture for internal combustion engine, etc.)

Current as of: June, 1999
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205 /   HD   ELECTROLYSIS: PROCESSES, COMPOSITIONS USED THEREIN, AND METHODS OF PREPARING THE COMPOSITIONS

775  DF  ELECTROLYTIC ANALYSIS OR TESTING (PROCESS AND ELECTROLYTE COMPOSITION) {19}
782  DF  .~ For oxygen or oxygen containing compound (except water) {4}
783.5  DF  .~.~ Using solid electrolyte {1}
784  DF  .~.~.~ Gaseous oxygen or oxygen containing compound {2}
784.5.~.~.~.~ In combustible gas (e.g., air/fuel mixture for internal combustion engine, etc.)

DEFINITION

Classification: 205/784.5

In combustible gas (e.g., air/fuel mixture for internal combustion engine, etc.):

(under subclass 784) Subject matter in which the gaseous

oxygen or gaseous oxygen containing compound is either flammable or is found in a flammable mixture of gases.

(1) Note. This subclass is not intended to include sensing of an exhaust gas to control an air/fuel feed mixture to an internal combustion engine unless the exhaust gas is specifically disclosed as comprising a combustible gas containing gaseous oxygen or a gaseous oxygen containing compound.