US PATENT SUBCLASS 252 / 62.59
.~.~ With titanium, zirconium, silicon, hafnium, germanium, or tin

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

62.51 R  DF  MAGNETIC {5}
62.56  DF  .~ Iron-oxygen compound containing {5}
62.59.~.~ With titanium, zirconium, silicon, hafnium, germanium, or tin

DEFINITION

Classification: 252/62.59

(under subclass 62.56) Compositions containing silicon in any form or titanium, zirconium, hafnium, germanium or indium in chemically combined form.