(under the class definition) Products in which a continuum (matrix or continuous phase) of elemental metal is interengaged with a continuum of nonmetal material.
(1) Note. These products are most usually obtained by the impregnation of a metal or nonmetal composition, having an interconnected void structure, with a nonmetal or metal composition, respectively, in a fluent form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
540, for products having interengaged nonmetal continuous phases.
545, for the product which results when a consolidated metal powder material having an interconnected void structure is
only partially impregnated with a nonmetal.
550, for the product which results when a consolidated metal powder material having an interconnected void structure is impregnated with a different metal material. 566, for consolidated metal powder stock-material* having an interconnected void structure.
SEE OR SEARCH CLASS
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures,
314+, for a consolidated composition containing free metal that is to be used as a charge for a metallurgical process and subclasses 230+ for consolidated metal powder compositions containing a nonmetal ingredient.
419, Powder Metallurgy Processes,
27, for processes of sintering powdered metal followed by impregnation.
427, Coating Processes,
440+, for immersion-type coating processes which may result in the impregnation of coating material into the pores of a substrate.
442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.),
228+, and 376+ for a fabric including a free metal or alloy constituent.
501, Compositions: Ceramic, for ceramic compositions containing metal particles in a nonmetal matrix without a continuous metal phase.
520, Synthetic Resins or Natural Rubbers, in particular, classes 523 and 524 for a synthetic resin or natural rubber composition containing a nonreactant material, but without a continuous metal phase.
