US PATENT SUBCLASS 340 / 633
.~.~.~.~ Catalytic detector

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
603  DF  .~.~ Fluent material {7}
632  DF  .~.~.~ Gas {2}
633.~.~.~.~ Catalytic detector

DEFINITION

Classification: 340/633

Catalytic detector:

(under subclass 632) Subject matter wherein the gas sensor includes a catalyst to induce a chemical reaction producing a parameter to which the sensor is responsive (e.g., heat).

(1) Note. The sensor is often coated with the catalyst and is thermally responsive.

SEE OR SEARCH CLASS

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

83+, for gas analysis apparatus utilizing a chemical reaction.

436, Chemistry: Analytical and Immunological Testing,

68+, for gas analysis utilizing a chemical reaction.