US PATENT SUBCLASS 210 / 730
.~.~.~ From natural source or chemical modification thereof

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}
730.~.~.~ From natural source or chemical modification thereof {1}
731  DF  .~.~.~.~> Starch

DEFINITION

Classification: 210/730

From natural source or chemical modification thereof:

(under subclass 729) Process in which the organic compound or composition exist in nature.

(1) Note. This subclass includes organic compositions derived from plants or micro-organisms.