US PATENT SUBCLASS 516 / FOR 110
.~.~.~.~.~ Bituminous dispersands (252/311.5)

Current as of: June, 1999
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516 /   HD   COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF

FOR 100  DF  COLLOIDS AND POTENTIAL COLLOIDS; CHEMICAL PROCESSES OF MAKING AND BREAKING (252/302) {8}
FOR 102  DF  .~ Colloid (polyphase discontinuous dispersion) systems (252/304) {2}
FOR 104  DF  .~.~ Liquid primary dispersants (252/306) {4}
FOR 108  DF  .~.~.~ Water as major dispersant only (252/310) {2}
FOR 109  DF  .~.~.~.~ Organic major dispersands only (252/311) {2}
FOR 110.~.~.~.~.~ Bituminous dispersands (252/311.5)

DEFINITION

Classification: 516/FOR.110

Foreign art collections including colloid systems wherein the dispersands comprise a bituminous material which is usually a solid or semi-solid hydrocarbon such as, for example, asphalt, pitch, tar or paraffin wax.