US PATENT SUBCLASS 524 / 425
.~.~.~.~.~.~ Calcium carbonate, e.g., limestone, marble, etc.


Current as of: June, 1999
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524 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
*  DD  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF (Class 523, subclass 1) {17}
1  DF  .~.~ Adding a NRM to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof {31}
80  DF  .~.~.~ DNRM which is other than silicon dioxide, glass, titanium dioxide, water, halohydrocarbon, hydrocarbon, or elemental carbon {4}
401  DF  .~.~.~.~ Inorganic compound devoid of a silicon atom DNRM {15}
424  DF  .~.~.~.~.~ Carbon atom DNRM {1}
425.~.~.~.~.~.~ Calcium carbonate, e.g., limestone, marble, etc. {2}
426  DF  .~.~.~.~.~.~.~> Solid polymer derived from at least one diene monomer
427  DF  .~.~.~.~.~.~.~> Solid polymer derived from unsaturated hydrocarbon monomer


DEFINITION

Classification: 524/425

Calcium carbonate, e.g., limestone, marble, etc.:

(under subclass 424) Subject matter wherein the carbon compound is calcium carbonate.

(1) Note. Limestone is proper herein in that it consists mainly of calcium carbonate.