US PATENT SUBCLASS 516 / 78
.~.~ The solid is primarily inorganic material (e.g., mercurous halide)

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}
77  DF  .~ Aqueous continuous liquid phase and discontinuous phase primarily solid (e.g., water based suspensions, dispersions, or certain sols*, of natural or synthetic ester-wax, beeswax, carnauba wax; or latex dispersion) {1}
78.~.~ The solid is primarily inorganic material (e.g., mercurous halide) {4}
79  DF  .~.~.~> The material primarily contains compound containing silicon covalently bonded to oxygen (e.g., aluminum silicate, clay) {2}
88  DF  .~.~.~> The material primarily contains compound containing both metal and oxygen (e.g., silver nitrate) {6}
96  DF  .~.~.~> The material primarily contains elemental selenium, tellurium, or sulfur, or compound thereof (e.g., zinc sulfide)
97  DF  .~.~.~> The material primarily contains elemental platinum group metal, copper, silver, or gold, or compound thereof

DEFINITION

Classification: 516/78

Said solid is primarily inorganic material (e.g., mercurous halide):

(under subclass 77) Subject matter in which said primarily solid discontinuous phase is primarily inorganic* material*, such as, mercurous halide.

(1) Note. "Primarily inorganic* material*" means that 50% or more of the solid phase is inorganic* material*, by weight, volume, molecule, or atom.

(2) Note. Dispersed mercurous halide is proper for this subclass since no indented subclass provides for this subject matter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

32, for colloid systems in which the continuous liquid phase is primarily organic* and the discontinuous phase is primarily solid or semisolid material* which is primarily elemental carbon, such as graphite or diamond dispersed or suspended in oil or other primarily organic* continuous liquid phase.

33+, for colloid systems in which the continuous liquid phase is primarily organic* and the discontinuous phase is primarily solid or semisolid material* which is primarily inorganic* material*.

SEE OR SEARCH CLASS 51, Abrasive Tool Making Process, Material, or Composition, appropriate subclasses for materials, compositions, colloid systems, wetting agents, subcombination compositions therefor, or appropriate methods designed for an abrading purpose.

73, Measuring and Testing,

53.01+, for liquid analysis or analysis of the suspension of solids in a liquid (particularly subclasses 61.63+ for determining settling ability of sediment constituent of a liquid mixture, subclasses 71.71+ for determining content or effect of a solid component (e.g., particles) constituent of a liquid mixture, and subclasses 64.41+ for a process or an apparatus for detecting or determining the composition of, a constituent of, or a property of a liquid or a liquid suspension of a solid and the determination is made by measuring or detecting the ability of the liquid to coagulate, to form a clot, or to form a stiffened or solid colloid-like mass (e.g., gel)).

106, Compositions: Coating or Plastic, appropriate subclasses for coating or plastic compositions, and materials or ingredients used in the making of coating or plastic compositions, which are not elsewhere classified. See

646, for inorganic settable composition containing protein which sets or hardens when mixed with water or aqueous solutions, usually forming a hard, stone-like product, and forming foam, cellular, hollow, or porous material.

137, Fluid Handling,

13, for processes in which flow of fluent material is facilitated by the addition of material which affects the flow characteristics of the fluent material (e.g., suspending agent, viscosity reducing agent), or by the application of heat or other forms of energy.

252, Compositions, for all those compositions for which there is no provision elsewhere in the USPCS; including those compositions (or appropriate methods) which are claimed as specifically intended for a special use or function, but which, if only generically claimed, would be proper for Class 516, provided that subject matter is hierarchically superior within Class 252. See

186.1+, for compositions for bleaching by oxidation, or in other oxidation of extraneous substances, or in generating oxygen, subclass 363.5 for finely divided solids combined with an agent to facilitate dispersion, subclasses 610+ for fire retarding compositions in the form of dispersion or colloid system, and subclasses 634+ for radioactive compositions in the form of sol solution or gel.

366, Agitating,

108+, for apparatus wherein the agitation is effected by vibratory device, subclasses 176.1+ for apparatus for forming suspensions or emulsions by agitation, cross-reference art collection 605 for mixing apparatus for stirring of paint. Processes which form colloid systems, such as emulsifying or foaming, are proper for compositions classes for the claimed specified use compositions, and for Class 516 for non-specified use compositions (generic). 507, Earth Boring, Well Treating, and Oil Field Chemistry,

90, for compositions for addition to petroleum oils during transportation through conduits to prevent fouling or clogging of the conduits due to components of the petroleum oils precipitating out during the transportation (e.g., suspending agents, antiflocculants), subclasses 100+ for earth boring compositions which may contain colloid systems (e.g., dispersions, suspensions, emulsions) or wetting agents, and subclasses 200+ for well treating compositions which may contain colloid systems (e.g., dispersions, suspensions, emulsions) or wetting agents.

508, Solid Antifriction Devices, Material Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions, appropriate subclasses for claimed or solely disclosed lubricants composed of suspension which may be colloid systems, see

136+, for compositions which are miscellaneous mineral oil compositions, or are lubricants or separants for moving solid surfaces, which contain silicon dioxide, silicic acid, orthosilicate, or metasilicate (e.g., clays, onium clays, estersils, etc.) which may be surface-treated. This class is organized based upon the chemical constituents or chemical reactants of the composition or device; no subclass specifically provides for colloid systems or wetting agents, therefore such subject matter would be placed based upon its constituents as though it were a solution or mixture having no colloid system characteristic.

510, Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions, appropriate subclasses for claimed or solely disclosed cleaning compositions for cleaning or removing foreign matter from solid surfaces which may be suspensions or dispersions of solid in aqueous phase (e.g., slurry). Although various subclasses specifically provide for colloid systems or wetting agents, such subject matter may be placed based upon another criterion, such as its chemical constitution (i.e., as though it has no colloid system characteristic). Areas known to have documents related to suspensions or dispersions of solid in aqueous phase (e.g., slurry) colloid systems include:

112+, for compositions for cleaning contact lenses (especially subclass 113 for compositions including solid particulate component which may be a colloid system

(suspension)), subclasses 133+ for composition for cleaning human skin (especially subclass 139 for particulate containing which may be colloid-sized), subclasses 276+ for cleaning compositions for textile material (e.g., laundry detergent) (particularly subclasses 337+ for liquid compositions (e.g., slurry) which may be colloid systems), subclasses 367+ for cleaning compositions with oxygen or halogen containing chemical bleach or oxidant component (particularly subclasses 368+ for with scrubbing or scouring component (e.g., abrasive, slurry), subclass 370 for liquid, paste, foam, or gel (e.g., slurry, aerosol composition or package)), subclasses 383+ for liquid, paste, or gel cleaning composition with halogen, nitrogen, oxygen, or phosphorus containing antiseptic or biocidal component, subclasses 395+ for cleaning composition with a scrubbing or scouring component (e.g., containing an abrasive, cream, paste, gel, gas-propelled, slurry), subclasses 405+ for liquid cleaning compositions, especially for chemically specified surfactants (particularly subclass 418 for liquid and solid phases (e.g., suspension, slurry)), and subclasses 535 for surfactant compositions (other that raw soap) which are specialized for use in cleaning compositions together with other auxiliary components (particularly subclass 537 for liquid or paste).