US PATENT SUBCLASS 501 / 135
.~.~ Alkaline earth or magnesium containing

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

1  DF  CERAMIC COMPOSITIONS {15}
134  DF  .~ Titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.) {1}
135.~.~ Alkaline earth or magnesium containing {1}
136  DF  .~.~.~> Titanate containing {1}

DEFINITION

Classification: 501/135

Alkaline earth or magnesium containing:

(under subclass 134) Compositions containing a compound of an alkaline earth or magnesium.