US PATENT SUBCLASS 516 / FOR 149
.~.~.~.~.~.~ Organic amine, amide, or N-base containing (252/344)

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 124  DF  .~ Resolving colloids or inhibiting colloidization (252/319) {1}
FOR 125  DF  .~.~ Liquid primary dispersants (252/320) {5}
FOR 131  DF  .~.~.~ Added nongaseous dissimilar treating substances (252/326) {2}
FOR 133  DF  .~.~.~.~ Resolving aqueous-petroleum or aqueous-hydrocarbon systems (252/328) {3}
FOR 136  DF  .~.~.~.~.~ Organic agents (252/331) {4}
FOR 149.~.~.~.~.~.~ Organic amine, amide, or N-base containing (252/344)

DEFINITION

Classification: 516/FOR.149

Foreign art collections including processes in which the added substance includes an organic amine, amide, or

nitrogen-base radical.