US PATENT SUBCLASS 501 / 109
.~.~.~ With organic material in starting mixture

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

1  DF  CERAMIC COMPOSITIONS {15}
94  DF  .~ Refractory {8}
108  DF  .~.~ Magnesium compound containing {7}
109.~.~.~ With organic material in starting mixture {1}
110  DF  .~.~.~.~> And iron or chromium compound

DEFINITION

Classification: 501/109

With organic material in starting mixture:

(under subclass 108) Subject matter additionally comprising an organic compound or other organic substance in the starting mixture.

(1) Note. The organic substance must no longer be present as such in the final product to be classifiable herein.