US PATENT SUBCLASS 501 / 132
.~.~.~ Chromium compound containing
Current as of:
June, 1999
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501 /
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COMPOSITIONS: CERAMIC
1
DF
CERAMIC COMPOSITIONS
{15}
94
DF
.~ Refractory {8}
126
DF
.~.~ Trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing {2}
132
.~.~.~ Chromium compound containing
DEFINITION
Classification: 501/132
Chromium compound containing:
(under subclass 126) Subject matter comprising a compound of chromium.
