US PATENT SUBCLASS 209 / 4
.~ Selective differentiation

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

Internet Version by PATENTEC © 1999      Terms of Use


209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

3  DF  PRECEDENT PREPARATION OF ITEMS OR MATERIALS TO FACILITATE SEPARATION {2}
4.~ Selective differentiation {4}
5  DF  .~.~> Deflocculation and flocculation
7  DF  .~.~> Form
8  DF  .~.~> Magnetizing and demagnetizing
9  DF  .~.~> Surface

DEFINITION

Classification: 209/4

(under subclass 3) Methods and apparatus for the treatment of a mixture of materials whereby the physical characteristics of one or more of the components are altered relatively to those of other components to permit or facilitate subsequent separation.

(1) Note. The characteristics of only one may be altered or those of all may be, but in different degree.

(2) Note. This subclass will include such methods and apparatus as are not classifiable in the subclasses indented thereunder, and may include selective alteration of bulk, specific gravity, or decomposition, as by dehydration etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

11, 46, 47, 48, 49, 176-182, for combinations of separation with treatment to promote the separation.

SEE OR SEARCH CLASS

241, Solid Material Comminution or Disintegration, appropriate subclasses, especially 14, and 102 for processes and apparatus for selectively comminuting material to enable better separation of the material into grades.