US PATENT SUBCLASS 501 / 44
.~.~.~.~ Fluorine and phosphorus containing

Current as of: June, 1999
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501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
11  DF  .~ Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions {11}
41  DF  .~.~ Nonsilicate oxide glasses {4}
43  DF  .~.~.~ Halogen containing {1}
44.~.~.~.~ Fluorine and phosphorus containing

DEFINITION

Classification: 501/44

Fluorine and phosphorus containing:

(under subclass 43) Compositions in which the halogen is fluorine and the composition additionally contains phosphorus or a phosphorus compound.