US PATENT SUBCLASS 510 / 144
.~.~.~.~.~ Hollow or buoyant core or insert (e.g., air-holding sponge, etc.)

Current as of: June, 1999
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510 /   HD   CLEANING COMPOSITIONS FOR SOLID SURFACES, AUXILIARY COMPOSITIONS THEREFOR, OR PROCESSES OF PREPARING THE COMPOSITIONS

108  DF  CLEANING COMPOSITIONS OR PROCESSES OF PREPARING (E.G., SODIUM BISULFATE COMPONENT, ETC.) {21}
109  DF  .~ For cleaning a specific substrate or removing a specific contaminant (e.g., for smoker's pipe, etc.) {50}
130  DF  .~.~ For human skin {11}
141  DF  .~.~.~ Solid, shaped article (e.g., bar, leaf, tablet, etc.) {11}
143  DF  .~.~.~.~ With solid integral noncleanser core or insert (e.g., layer, matrix, etc.) {1}
144.~.~.~.~.~ Hollow or buoyant core or insert (e.g., air-holding sponge, etc.)

DEFINITION

Classification: 510/144

Hollow or buoyant core or insert (e.g., air-holding sponge, etc.):

(under subclass 143) Articles wherein the core or insert is hollow or buoyant (e.g., floating soap, etc.)