(under subclass 544) Subject matter comprising a plurality of layers of material having an interface which is greater in area than would be obtained by the mating of two smooth surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
609, for an interface with macroscopic irregularities.
SEE OR SEARCH CLASS
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
2+, for processes of etching resulting in a roughened surface.
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,
640+, for electrolytic erosion of a workpiece to change its shape or surface configuration and subclasses 687+ for electrolytic material treatment, in general.
