US PATENT SUBCLASS 106 / 423
.~.~.~.~.~.~ Subsequent treatment or product thereof

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}
419  DF  .~.~.~ Zinc compound containing (Zn) {4}
420  DF  .~.~.~.~ Zinc sulfide containing {2}
421  DF  .~.~.~.~.~ Lithopone (zinc sulfide + barium sulfate) {2}
423.~.~.~.~.~.~ Subsequent treatment or product thereof

DEFINITION

Classification: 106/423

Subsequent treatment or product thereof:

(under subclass 421) Subject matter wherein the lithopone composition is further treated, e.g., to purify, etc., or product thereof.