US PATENT SUBCLASS 71 / 29
.~.~.~.~ With phosphorus-containing substances

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}
11  DF  .~ Organic material-containing {6}
27  DF  .~.~ From synthetic material {1}
28  DF  .~.~.~ Urea and its derivatives {2}
29.~.~.~.~ With phosphorus-containing substances

DEFINITION

Classification: 71/29

(under subclass 28) Processes and products which include inorganic P containing substances, such as phosphates.