US PATENT SUBCLASS 530 / 208
.~.~ Inorganic material used in the process, or product thereof (e.g., using sulfuric acid, boric acid, etc.)


Current as of: June, 1999
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530 /   HD   CHEMISTRY: NATURAL RESINS OR DERIVATIVES; PEPTIDES OR PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF

200  DF  NATURAL RESINS OR DERIVATIVES (E.G., WOOD OR PINE TAR; CATIVO RESIN DERIVATIVES, ETC.) {6}
205  DF  .~ Recovery of tall oil or derivatives from papermaking waste, purification of tall oil, or separation of components of tall oil; or product thereof (e.g., separation of rosin, fatty acids, sterols, etc.; decolorizing, etc.) {3}
208.~.~ Inorganic material used in the process, or product thereof (e.g., using sulfuric acid, boric acid, etc.) {1}
209  DF  .~.~.~> Phosphorus or heavy metal containing material, elemental hydrogen, sulfur dioxide, or carbon dioxide used in the process, or product thereof


DEFINITION

Classification: 530/208

(under subclass 205) Process wherein there is utilized an inorganic material, or products of such processes.