US PATENT SUBCLASS 252 / 62
HEAT OR SOUND INSULATING
Current as of: June, 1999
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DEFINITION
Classification: 252/62
(under the class definition) Compositions specialized and designed for use as heat or sound insulating or deadening materials, substances peculiar to such compositions, or processes of making the same.
SEE OR SEARCH CLASS
106, Compositions: Coating or Plastic, appropriate subclasses, particularly
122, 601+ and 672+ for porous coating or plastic compositions.
181, Acoustics,
284+, for a panel, web or sheet product with particular internal or external structure disclosed as being provided for the purpose of muffling sound.
428, Stock Material or Miscellaneous Articles, appropriate subclasses for a stock material product in the form of a single or plural layer web or sheet which may inherently possess sound deadening or heat insulating properties; note especially 131+, for such a product including apertures, subclasses 297+ for such a product including a component containing structurally defined fibers, subclasses 304.4+ for such a product including a component which is porous or cellular, subclasses 323+ for such a product having a component containing structurally defined particles, subclasses 357+ for a mass or layer of a structurally defined or coated element (e.g., flake, particle, rod, strand or fiber); and subclass 920 (a cross-reference art collection) for a product having heat insulating properties.
501, Compositions: Ceramic,
39, and 80+ for pore-forming ceramic compositions.
