US PATENT SUBCLASS 423 / 322
.~ Elemental phosphorus


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

Internet Version by PATENTEC © 1999      Terms of Use



423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

299  DF  PHOSPHORUS OR COMPOUND THEREOF {5}
322.~ Elemental phosphorus {1}
323  DF  .~.~> Utilizing a phosphate as reactant


DEFINITION

Classification: 423/322

(under subclass 299) Products or processes wherein the product is elemental phosphorus.

(1) Note. Changing yellow phosphorus to red phosphorus involves a chemical reaction since the water of hydration is changed, see (9) Note in the class definition.