SUBSTANTIALLY PURE CARBON (E.G., GRAPHITE, LAMP BLACK, CARBONBLACK, FULLERENES):
(under the class definition) A collection of art which discloses subject matter relating to a colloid system comprising substantially pure carbon in one of its various forms such as graphite, lamp black, carbon black, fullerenes.
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.
38+, for colloid systems (e.g., emulsions, suspensions, or dispersions) in which the continuous liquid phase is aqueous and the discontinuous phase is primarily bituminous, coal, or carbon.
SEE OR SEARCH CLASS
44, Fuel and Related Compositions, for compositions to be used either as a fuel or as a carbonaceous reductant,
280+, for solid carbonaceous fuel dispersed in a liquid medium.
106, Compositions: Coating or Plastic, 20+, for compositions specially designed for use as inks (e.g., marking, writing, printing, ink jet, crayon compositions), subclasses 472+ for materials or ingredients
specialized for use as pigments, fillers, or aggregates in coating or plastic compositions wherein the composition contains carbon in the elemental form, e.g., carbon black, etc.
201, Distillation: Processes, Thermolytic, appropriate subclasses, for a process of making coke.
241, Solid Material Comminution or Disintegration,
15+, (particularly subclass 16) for processes for producing non-colloid suspensions of a solid in a liquid by comminuting operations, subclasses 38+ for apparatus which may produce suspensions of a solid in a liquid by comminuting operations, whether such suspensions be disclosed as colloidal or not.
252, Compositions,
502, for compositions which either conduct or emit electrons and which contain as an ingredient elemental carbon.
423, Chemistry of Inorganic Compounds,
445+, for products or processes of making same wherein the product is free carbon in substantially pure form, such as, diamond, fullerenes.
502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making,
416+, for sorbent compositions which are free carbon containing; the term "activated carbon" will be construed as indicating a composition comprising carbon and unidentified components, functioning as a sorbent for this class.
508, Solid Anti-Friction Device, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions, 113+, for lubricants containing graphite, coal, or elemental Carbon which may be colloid-sized dispersion. 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.
