US PATENT SUBCLASS 210 / 734
.~.~.~.~.~ Nitrogen containing (e.g., amine, azo, etc.)

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

600  DF  PROCESSES {14}
702  DF  .~ Making an insoluble substance or accreting suspended constituents {14}
729  DF  .~.~ Utilizing organic precipitant {2}
732  DF  .~.~.~ Synthetic polymer {2}
733  DF  .~.~.~.~ Acrylic {1}
734.~.~.~.~.~ Nitrogen containing (e.g., amine, azo, etc.)

DEFINITION

Classification: 210/734

Nitrogen containing (e.g., amine, azo, etc.):

(under subclass 733) Process in which the polymer includes acrylic units and amino, azo, or N-cyclic units.

(1) Note. This subclass includes acrylic polymers containing aminoalkyl units.