US PATENT SUBCLASS 106 / 409
.~.~.~ Hollow, porous or foam particle containing

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  MATERIALS OR INGREDIENTS {7}
400  DF  .~ Pigment, filler, or aggregate compositions, e.g., stone, shale, pebbles, rock, etc. {1}
401  DF  .~.~ Composition contains identified material other than water {25}
409.~.~.~ Hollow, porous or foam particle containing

DEFINITION

Classification: 106/409

Hollow, porous or foam particle containing:

(under subclass 401) Subject matter wherein at least some of the particles in the composition are hollow or porous or are particles of foam material.

SEE OR SEARCH CLASS

501, Compositions: Ceramic,

80+, for the production of porous materials from ceramic compositions.