US PATENT SUBCLASS 71 / 43
.~.~.~.~ Neutralization

Current as of: June, 1999
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71 /   HD   CHEMISTRY: FERTILIZERS

1  DF  PROCESSES AND PRODUCTS {5}
31  DF  .~ Inorganic material {5}
32  DF  .~.~ Phosphorus-containing {1}
33  DF  .~.~.~ Phosphates {6}
43.~.~.~.~ Neutralization

DEFINITION

Classification: 71/43

(under subclass 33) Methods directed to the neutralization of an acidic or basic material by treatment with a reagent which will accomplish the neutralization.