US PATENT SUBCLASS 71 / 58
.~.~.~ Nitrates

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


71 /   HD   CHEMISTRY: FERTILIZERS

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

DEFINITION

Classification: 71/58

(under subclass 54) Processes directed to the preparation of an inorganic fertilizer containing nitrates and corresponding products.