US PATENT SUBCLASS 516 / 129
.~.~.~ The compound contains oxygen

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}
115  DF  .~ Continuous liquid phase colloid system and discontinuous gas or vapor phase (i.e., foam) {7}
128  DF  .~.~ The agent contains organic compound containing nitrogen, except if present solely as NH4+ {1}
129.~.~.~ The compound contains oxygen {1}
130  DF  .~.~.~.~> The compound contains -C(=O)NHH where substitution may be made for the hydrogen {1}

DEFINITION

Classification: 516/129

The compound contains oxygen:

(under subclass 128) Subject matter in which the organic* compound which contains nitrogen also contains oxygen.

(1) Note. Materials* used as agents* which are impurely or

crudely derived from plant or animal sources, are assumed to contain nitrogen-containing organic* compounds (i.e., the DNA and proteins), unless clearly separated out, such as cellulose, carbohydrate fractions, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

136, for similar subject matter related to breaking (resolving) or inhibiting of emulsions using an agent* which contains a solid material* which is only organic* or in which the nature of the material* is indeterminable.

137, for similar subject matter related to breaking (resolving) or inhibiting of emulsions using an agent* which contains a solid material*, in which the material* contains both an inorganic* material* and an organic* material*.

161+, for similar subject matter related to breaking (resolving) or inhibiting of aqueous-petroleum*, petroleum*-aqueous, aqueous-hydrocarbon, or hydrocarbon-aqueous emulsions (using an agent* which contains material* different from the primary components of both liquid phases as required by hierarchically superior subclass 139), and in which the agent* is other than solid surface functioning (as provided for in subclasses 136+), and is other than physically or chemically dissolving binding, or destroying or at least part of one liquid phase (other than the colloid system making or stabilizing agent*) (as provided for in subclass 140), and in which the agent* doesn't contain both an inorganic* material* and an organic* material* (as provided for in subclass 142).