US PATENT SUBCLASS 501 / 24
.~.~.~.~ Phosphorous 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}
14  DF  .~.~ Enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) {4}
21  DF  .~.~.~ Chemically specified frit compositions {4}
24.~.~.~.~ Phosphorous containing

DEFINITION

Classification: 501/24

Phosphorus containing:

(under subclass 21) Compositions which contain phosphorus or a compound of phosphorus.