US PATENT SUBCLASS 516 / 138
.~.~.~ The agent contains inorganic (except water) material (e.g., metal screen, CaCO3, glass, clay, diatomaceous earth, sand, gravel, alum)

Current as of: June, 1999
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516 /   HD   COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF

113  DF  COMPOSITIONS CONTAINING AN AGENT FOR BREAKING (RESOLVING) OR INHIBITING COLLOID SYSTEMS; PROCESSES OF BREAKING (RESOLVING) OR INHIBITING COLLOID SYSTEMS (E.G., GEL BREAKING OR INHIBITING, COAGULATING, FLOCCULATING); PROCESSES OF PREPARING THE COMPOSITIONS {3}
135  DF  .~ Continuous liquid phase colloid system and discontinuous liquid phase (e.g., breaking an emulsion) {4}
136  DF  .~.~ Breaking (resolving) or inhibiting occurs on the surface of a solid agent (e.g., adsorbent, absorbent, differential adherence surface, filter, sharp edged particles) {2}
138.~.~.~ The agent contains inorganic (except water) material (e.g., metal screen, CaCO3, glass, clay, diatomaceous earth, sand, gravel, alum)

DEFINITION

Classification: 516/138

The agent contains inorganic (except water) material (e.g., metal screen, CaCO 3, glass, clay, diatomaceous earth, sand, gravel, alum):

(under subclass 136) Subject matter in which the solid material* contains inorganic* (except water) material* only, such as, metal screen, CaCO 3, glass, clay, diatomaceous earth, sand, gravel, alum.

(1) Note. Included here are documents disclosing solids comprising filter beds, screens, particulates (such as sand), adsorbents, and absorbents, whether they are described as acting physically or chemically (bonding), such as by differential wetting, hydrogen bonding, etc.

(2) Note. Not included here are documents merely disclosing typical apparatus such as vessel, container, pipe walls, agitator vanes, etc., without a description of coalescence upon the apparatus surfaces.

(3) Note. Not included here are documents merely disclosing centrifuging, mechanical shocking, or specified agitating, without a description of coalescence upon the apparatus surfaces. Such processes typically disclose coalescence among the dispersed phase droplets themselves.

(4) Note. "Inorganic* (except water)" means water is not considered in the assessment of the composition of the inorganic* material*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

195, for subject matter related to breaking (resolving) or inhibiting of emulsions using vaporizing, heating, or cooling

combined with or simultaneous with centrifuging, mechanical shocking, or specified agitating, and without using an added material* dissimilar from the primary component of both liquid phases. 197, for subject matter related to breaking (resolving) or inhibiting of emulsions using centrifuging, mechanical shocking, or specified agitating, and without using an added material* dissimilar from the primary component of both liquid phases.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

708, for processes in which an emulsion is treated by a chemical or physical agent to cause the discontinuous phase to coalesce, and cross-reference art collections 922+ for oil spill cleanup (e.g., cross-reference art collection 925 for using chemical agent).