US PATENT SUBCLASS 528 / 935
.~.~ Preserving or stabilizing

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

931  DF  PHYSICAL TREATMENT OF NATURAL RUBBER OR NATURAL RUBBER CONTAINING MATERIAL OR CHEMICAL TREATMENT OF NON-RUBBER PORTION THEREOF, E.G., EXTRACTION OF RUBBER FROM MILK WEED, ETC. {3}
934  DF  .~ Latex {3}
935.~.~ Preserving or stabilizing

DEFINITION

Classification: 528/935

Preserving or stabilizing:

(under subclass 934) Subject matter relating to preserving or stabilizing natural rubber latex.

SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

53+, for colloid systems of aqueous continuous phase with discontinuous phase primarily organic liquid or agents for such systems or making or stabilizing such systems or agents, subclasses 135+ for compositions for or subcombination compositions for or breaking of or inhibiting of colloid systems (e.g., emulsion breaking, dispersion inhibiting, suspension settlying, coagulating, flocculating); in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.