US PATENT SUBCLASS 204 / 157.51
.~.~.~.~ Metal oxide or hydrate thereof

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

*  DD  PROCESSES AND PRODUCTS {7}
157.15  DF  .~ Processes of treating materials by wave energy {6}
157.4  DF  .~.~ Process of preparing desired inorganic material {11}
157.5  DF  .~.~.~ Oxygen containing product produced {1}
157.51.~.~.~.~ Metal oxide or hydrate thereof

DEFINITION

Classification: 204/157.51

Metal oxide or hydrate thereof:

(under subclass 157.5) Subject matter wherein the product is a binary compound containing only a metal atom and oxygen, or a hydrate form thereof.

(1) Note. Metal is limited to those elements of atomic number 3-4, 11-13, 19-33, 37-51, 55-70, 72-84 or 87 and higher.