US PATENT SUBCLASS 71 / 60
.~.~.~.~ With carbonates, oxides, sulfates, or halides

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

1  DF  PROCESSES AND PRODUCTS {5}
31  DF  .~ Inorganic material {5}
54  DF  .~.~ Nitrogen-containing (except ammonium) {2}
58  DF  .~.~.~ Nitrates {2}
60.~.~.~.~ With carbonates, oxides, sulfates, or halides

DEFINITION

Classification: 71/60

(under subclass 58) Processes and products which include, additionally, carbonates, oxides, sulphates or halides, one or more.