US PATENT SUBCLASS 516 / 43
.~.~ The agent contains organic compound containing nitrogen, except if present solely as NH4+

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

9  DF  CONTINUOUS LIQUID OR SUPERCRITICAL PHASE: COLLOID SYSTEMS; COMPOSITIONS CONTAINING AN AGENT FOR MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF PREPARING THE COMPOSITIONS (E.G., THICKENING AGENT; PROTECTIVE COLLOID AGENT; COMPOSITION CONTAINING AN EMULSIFYING AGENT WITH NO DISPERSANT* DISCLOSED; ORGANIC LIQUID EMULSIFIED IN ANHYDROUS HF) {5}
38  DF  .~ Aqueous continuous liquid phase and discontinuous phase primarily bituminous (e.g., asphalt, pitch, tar, montan wax, paraffin wax), or coal, or elemental Carbon {6}
43.~.~ The agent contains organic compound containing nitrogen, except if present solely as NH4+ {2}
44  DF  .~.~.~> The compound contains plural peptide linkages, i.e., compound formed from amino acids, natural or synthetic, by reaction of a carboxyl group of one such amino acid with an amino group of another same or different such amino acid
45  DF  .~.~.~> The compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene)

DEFINITION

Classification: 516/43

The agent contains organic compound containing nitrogen, except if present solely as NH 4+:

(under subclass 38) Subject matter in which the colloid system making or stabilizing agent* contains an organic* compound which contains nitrogen, except for when the nitrogen is present solely as the cationic ammonium group, NH 4+.

(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:

15+, for a similar colloid system making or stabilizing agent* used in foam colloid system.

20, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with organic* liquid discontinuous phase (e.g., oil-in-oil emulsion).

27, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with inorganic* liquid discontinuous phase (e.g., water-in-oil emulsion).

31+, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with discontinuous phase primarily solid or semisolid. 67+, for a similar colloid system making or stabilizing agent* used in aqueous continuous phase with discontinuous phase primarily organic* liquid.

77+, for a similar colloid system making or stabilizing agent* used in aqueous continuous phase with discontinuous phase primarily (nonbituminous) solid.