US PATENT SUBCLASS 356 / 436
.~ Of fluent material

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


356 /   HD   OPTICS: MEASURING AND TESTING

432  DF  FOR LIGHT TRANSMISSION OR ABSORPTION {3}
436.~ Of fluent material {3}
437  DF  .~.~> Gas {1}
440  DF  .~.~> With significant sample holder or supply
441  DF  .~.~> Having particles suspended in liquid {1}

DEFINITION

Classification: 356/436

Of fluent material:

(under subclass 432) Subject matter wherein visible radiation is detected after passing through a fluid substance.

SEE OR SEARCH THIS CLASS, SUBCLASS:

246, for fluid containers, per se, peculiar to testing.

335+, for determining the size of the particles or the size and the number of the particles present in a turbid solution.

337+, for particle light scattering wherein the light detected is that reflected from the particles in the turbid suspension.

SEE OR SEARCH CLASS

73, Measuring and Testing,

64.41+, for the testing of the settling rate of a liquid suspension of solids. 250, Radiant Energy,

564+, for circuits for evaluating a fluent material; and subclasses 573+ for photocell detection of fluent material in an optical path.