US PATENT SUBCLASS 524 / 447
.~.~.~.~.~.~.~ Kaolin or bentonite


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}
444  DF  .~.~.~.~.~ Aluminum atom DNRM {4}
445  DF  .~.~.~.~.~.~ Clay, e.g., fullers earth, fire clay, etc. {2}
447.~.~.~.~.~.~.~ Kaolin or bentonite


DEFINITION

Classification: 524/447

Kaolin or bentonite:

Subject matter under sublcass 445 wherein the clay DNRM is kaolin or bentonite.

(1) Note. Kaolin clay is primarily composed of kaolinite. Kaolin has a wide variety of names which include china clay, white bole, bolus alba, argilla, porcelain clay, white clay, and terra alba.

(2) Note. Bentonite contains a substantial amount of the clay mineral montmorillonite and has the ability to swell gently by absorption of water. Other names for bentonite are wilkenite and colloidal clay.