US PATENT SUBCLASS 501 / 127
.~.~.~ Aluminum compound (e.g., clay, aluminium oxide, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


501 /   HD   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}
127.~.~.~ Aluminum compound (e.g., clay, aluminium oxide, etc.) {1}
128  DF  .~.~.~.~> And silicon compound other than clay {2}

DEFINITION

Classification: 501/127

Aluminum compound (e.g., clay, aluminum oxide, etc.):

(under subclass 126) Subject matter wherein the trivalent metal is aluminum.