US PATENT SUBCLASS 523 / 139
.~.~ Composition related to metal foundry molding or metallurgical furnace 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.~.~ Composition related to metal foundry molding or metallurgical furnace or process of preparing {6}
140  DF  .~.~.~> Hot-top or taphole plug composition or process of preparing
141  DF  .~.~.~> Composition for metallurgical furnace or oven or process of preparing
142  DF  .~.~.~> Organic polyisocyanate or derived from polyisocyanate {1}
144  DF  .~.~.~> Furan-type material
145  DF  .~.~.~> Phenolic or amine or ketone condensate with aldehyde {2}
148  DF  .~.~.~> Polyester based

DEFINITION

Classification: 523/139

Composition related to metal foundry molding or metallurgical furnace or process or preparing:

(under subclass 1) Subject matter wherein a composition having utility in the casting or metals or in metallurgical furnaces is claimed or solely disclosed or to processes of preparation thereof.

(1) Note. For an explanation of patent placement referring to claimed or solely disclosed, see (in the class definition) the section of SEARCH THIS CLASS, SUBCLASS that refers to this subclass.

(2) Note. Compositions drawn to separate components of a foundry system such as resin coated sands, binders, or powdered facing agents, as well as the composite foundry system, are classified herein.

(3) Note. Compositions relating to foundry molding with no reference to glass or metal are assumed to be metal foundry molding compositions are thus classified herein.

(4) Note. A composition solely disclosed as not having utility in the casting of metals or in metallurgical furnaces is placed as appropriate in Classes 523 and 524 hereinbelow.