US PATENT SUBCLASS 501 / 45
.~.~.~ 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}
45.~.~.~ Phosphorus containing {3}
46  DF  .~.~.~.~> And titanium, zirconium, vanadium, tungsten, or molybdenum
47  DF  .~.~.~.~> And boron
48  DF  .~.~.~.~> And aluminum or beryllium

DEFINITION

Classification: 501/45

Phosphorus containing:

(under subclass 41) Compositions containing phosphorus or a compound of phosphorus.

SEE OR SEARCH THIS CLASS, SUBCLASS:

44, for similar compositions containing fluorine in addition to the phosphorus.