US PATENT SUBCLASS 516 / 99
.~ The solid phase contains organic material

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

98  DF  CONTINUOUS OR SEMICONTINUOUS SOLID PHASE (I.E., SYSTEMS WHICH EXHIBIT PLASTICITY, ELASTICITY, OR RIGIDITY): 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., GEL, PASTE, GELLED EMULSION, FLOC) {4}
99.~ The solid phase contains organic material {3}
100  DF  .~.~> The organic material coats, impregnates, or surface modifies solid inorganic material (e.g., dextrin modified clay) {1}
102  DF  .~.~> The organic material contains organic compound containing nitrogen, except if present solely as NH4+ {1}
104  DF  .~.~> The organic material contains organic compound containing oxygen {3}

DEFINITION

Classification: 516/99

The solid phase contains organic material:

(under subclass 98) Subject matter in which the continuous or semicontinuous solid phase contains organic* material*, alone or in combination with inorganic* material*.

(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 CLASS

60, Power Plants,

39.464, for reaction motor having means to produce combustion products wherein the fuel may be a solid, slurry, emulsion, dispersion, or suspension, subclass 252 for reaction motor (e.g., rockets) wherein the propellant is a gelatinous precipitate.

73, Measuring and Testing,

53.01+, for liquid analysis or analysis of the suspension of solids in a liquid (particularly 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)).

102, Ammunition and Explosives, 365, for liquid or jelly containing incendiary apparatus or method of use.

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 settleable 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.

149, Explosive and Thermic Compositions or Charges, appropriate subclasses for explosive and thermic compositions and methods of preparing or treating such compositions, where the latter are used to produce usable heat or flame or by-products resulting from the use of such compositions (e.g. smoke flares). See various subclasses based on active composition for explosive or thermic compositions which may be gels or pastes or may be intended to yield smoke as result of combustion (particularly

29+, 37+, and 78+), subclasses 17+ for compositions containing particulate material dispersed substantially entirely within a solidified or matrix medium and which are characterized by dispersed phase within a continuous phase, subclass 108.4 for smoke affecting composition (e.g., coloring), subclass 108.8 for compositions containing a stability or viscosity agent (e.g., gelling, thickening, thinning, liquefying, etc., agent, a stabilizer or unstabilizer (activator), a burning rate modifier), cross-reference art collection 110+ for compositions or processes reciting or disclosing a reference to a particular size or dimension of the particles of at least one of the ingredients or the size or dimension of all or part of the composition in particulate form, cross-reference art collection 117 for smoke generating or weather modifying composition with a resin, and cross-reference art collection 118 for composition containing a resin dissolved in the continuous phase of a gel.

162, Paper Making and Fiber Liberation,

187, for processes of forming an interfelted fibrous product from a hydrated or partially gelatinized fiber and the product per se.

166, Wells,

244.1+, for processes of treating or operating a well which may include gel forming or breaking in a well, which includes significantly claimed process steps of well treating or well operation. See also the notes and SEARCH CLASS references in Class 166 subclass 244.1 and in Class 507 definition.

204, Chemistry: Electrical and Wave Energy,

414, for apparatus for electrolysis in analytical or testing system which uses a gel electrolyte, subclasses 450+ for processes of separating or purifying using electrophoresis or electro-osmosis (especially subclasses 456+ for processes of gel electrophoresis, subclass 514 for separation of hydrocarbon oil in an aqueous system (e.g., emulsion breaking)). 424, Drug, Bio-Affecting and Body Treating Compositions,

1.25, for radionuclide containing composition which dissolves or elutes from solid or gel matrix, subclasses 469+ in which

sustained or differential release type tablets, lozenges, or pills contain discrete soluble particles of the active ingredient are positioned or dispersed in a solid, generally insoluble matrix from which said particles are leached sequentially under conditions of use from the outside portions of the matrix inwardly, subclasses 76.2+ for non-body deodorizing substances which are evaporable, sublimable, or gas (e.g., deodorization of air, aerosol spray compositions, gels).

426, Food or Edible Material: Processes, Compositions, and Products,

531+, for per se products or processes of preparing or treating compositions involving chemical reaction by addition, combining diverse food material, or permanent additive (particularly subclasses 573+ for gels or gellable composition).

427, Coating Processes,

246, for forming a foraminous product having a microporous coating by coagulating or jelling the coating.

430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof,

199+, for films used for image forming and transfer (e.g., instant photography) which may include a gel, subclass 404 where a gel or web is used in a developer for nonradiation sensitive image processing, subclasses 495.1+ for film which may contain gel (e.g., gelatin).

436, Chemistry: Analytical and Immunological Testing,

515, for tests involving diffusion or migration of antigen or antibody through a gel, such as immunoelectrophoresis.

505, Superconductor Technology: Apparatus, Material, Process, 440, for processes under the class definition of producing or treating high temperature (Tc >30 K) superconductor material or superconductor containing products or processes of producing or treating precursors thereof which utilizes a sol or gel at any stage, cross-reference art collection 735 for a process limited to the methods of making or treating high temperature (Tc >30 K) superconducting shaped material, article, or device which includes a sol-gel process.

507, Earth Boring, Well Treating, and Oil Field Chemistry,

200+, for well treating compositions which may contain colloid systems (e.g., dispersions, suspensions, emulsions) or wetting agents, cross-reference art collection 922+ for fracture fluids which may be gels.

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 gel or paste. 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 gel or paste colloid systems include:

133+, for composition for cleaning human skin (especially subclass 158 for cream, paste, or gel), subclasses 221+ for liquid, paste, or gel composition used in automatic dishwasher, subclasses 276+ for cleaning compositions for textile material (e.g., laundry detergent) (particularly subclass 280 for gel or liquid composition for cleaning pile fabric or upholstery (e.g., carpet, rug), subclass 336 for gel, cream, or paste), subclasses 367+ for cleaning compositions with oxygen or halogen containing chemical bleach or oxidant component (particularly 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), subclass 403 for gel or malleable (e.g., plastic-like) cleaning composition, subclass 404 for cream or paste cleaning composition, 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).

514, Drug, Bio-Affecting and Body Treating Compositions,

772+, for compositions which contain a designated

nonbioactive organic compound (e.g., emulsifying polymers, gelatin), cross-reference art collections 936-975 which pertain to specifically disclosed carrier systems, physical form, or specified nonbioactive ingredient (particularly cross-reference art collection 944 for subject matter involving a gel form and containing specified ingredients to give a gel).

521, Synthetic Resins or Natural Rubbers--Part of the Class 520 Series, 28, for a mixture of a synthetic ion exchange resin in gel form, subclasses 53+ for the gel of a porous synthetic resin.

523, Synthetic Resins or Natural Rubbers--Part of the Class 520 Series,

100, 173, for nonporous synthetic polymeric gels with specified functions or uses.

524, Synthetic Resins or Natural Rubbers--Part of the Class 520 Series, appropriate subclasses for synthetic polymeric gels, cross-reference art collection 916 for art collection disclosing hydrogel compositions, cross-reference art collection 922 for art collection disclosing flocculating, clarifying, or fining compositions.

528, Synthetic Resins or Natural Rubbers--Part of the Class 520 Series, cross-reference art collections 934+ for subject matter relating to recovery and physical processing of natural rubber latex (particularly cross-reference art collection 936 for coagulating).

530, Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof, appropriate subclasses for colloid systems such as gel-like proteins; areas known to have documents related to colloid systems include:

354+, for gelatin, subclass 356 for collagen, subclasses 360+ for casein or caseinate, subclasses 362+ for albumin, subclasses 370+ for plant or yeast proteins, subclasses 380+ for blood proteins (particularly 381+ for blood coagulation factors and fibrin, e.g., thromboplastin).