US PATENT SUBCLASS 501 / 28
.~.~.~ Slag 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}
27  DF  .~.~ Glass batch forming compositions (i.e., glass batch compositions) {4}
28.~.~.~ Slag containing

DEFINITION

Classification: 501/28

Slag containing:

(under subclass 27) Compositions which comprise slag, the nonmetallic by product from various metallurgical processes.