US PATENT SUBCLASS 250 / 338.5
.~.~ With means to analyze uncontained fluent material

Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
338.1  DF  .~ Infrared responsive {12}
338.5.~.~ With means to analyze uncontained fluent material

DEFINITION

Classification: 250/338.5

With means to analyze uncontained fluent material:

(under subclass 338.1) Subject matter having means to detect infrared radiation emanating from the material.

(1) Note. The emanation from the material may be natural emission or radiation modified or caused by the material as through reflection, resonant absorption, reradiation and the like.

SEE OR SEARCH THIS CLASS, SUBCLASS:

339.07, and 339.08, for infrared spectrometry.

343, and 373, for transmission-testing of contained material.

SEE OR SEARCH CLASS

356, Optics: Measuring and Testing,

317+, for spectroscopy with sample excitation using light, and subclasses 436+ for transmission or absorption testing of a fluent material.