US PATENT SUBCLASS 523 / 140
.~.~.~ Hot-top or taphole plug composition or process of preparing

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
139  DF  .~.~ Composition related to metal foundry molding or metallurgical furnace or process of preparing {6}
140.~.~.~ Hot-top or taphole plug composition or process of preparing

DEFINITION

Classification: 523/140

Hot-top or taphole plug composition or process of preparing:

(under subclass 139) Subject matter wherein the composition

is used as or in hot-tops of ingot molds or for plugging tapholes of black furnaces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

139, or 142+, for compositions relating to tundishes with no reference to hot-tops.