US PATENT SUBCLASS 252 / 521.4
.~.~ Boron containing or with boron compound

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

500  DF  ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS {6}
518.1  DF  .~ Metal compound containing {16}
521.4.~.~ Boron containing or with boron compound

DEFINITION

Classification: 252/521.4

Boron containing or with boron compound:

(under subclass 518.1) Compositions wherein boron is present in the metal compound or wherein a boron compound is present in addition to the metal compound.