US PATENT SUBCLASS 423 / 152
.~.~.~ At specified temperature

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
138  DF  .~ Iron group metal (Fe, Co, or Ni) {7}
151  DF  .~.~ Converting metal to magnetic form {1}
152.~.~.~ At specified temperature

DEFINITION

Classification: 423/152

(under subclass 151) Processes wherein the temperature or range thereof at which the conversion is made is recited specifically.