US PATENT SUBCLASS 501 / 106
.~.~.~ Zirconium silicate

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

1  DF  CERAMIC COMPOSITIONS {15}
94  DF  .~ Refractory {8}
102  DF  .~.~ Zirconium compound containing {2}
106.~.~.~ Zirconium silicate {1}
107  DF  .~.~.~.~> And aluminum compound (e.g., clay, aluminum oxide, etc.)

DEFINITION

Classification: 501/106

Zirconium silicate:

(under subclass 102) Subject matter comprising a silicate of zirconium.

(1) Note. The zirconium silicate may be disclosed to be, e.g., zircon (ZrSiO4).