US PATENT SUBCLASS 524 / 451
.~.~.~.~.~ Talc (soapstone) DNRM


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}
442  DF  .~.~.~.~ Soil or inorganic silicon DNRM (other than silicon dioxide, glass, quartz, novaculite, or silicon dioxide type) {5}
451.~.~.~.~.~ Talc (soapstone) DNRM


DEFINITION

Classification: 524/451

Talc (soapstone) DNRM:

(under subclass 442) Subject matter wherein the inorganic silicon material is talc.

(1) Note. Talc is a magnesium silicate (3MgO.4SiO2.H2[end subscrpt]O). Included within the term talc are talcum, steatite, mineral graphite, soapstone, rensselaerite, potstone, and French chalk.