US PATENT SUBCLASS 65 / 19
.~ Slag, utilization
Current as of: June, 1999
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DEFINITION
Classification: 65/19
(under subclass 17.1) Processes directed to working and/or treating of slag usually formed by corrosion or fluxing of refractories, or formed as a by-product in metallurgical processes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
376+, for a process of forming fibers or filaments from slag.
SEE OR SEARCH CLASS
106, Compositions: Coating or Plastic, 501, Compositions: Ceramic,
28, for glass compositions having slag; subclass 767 for the use of slag as raw material in making Portland type cement; and subclasses 624, 679, 714, 782, 789 for other inorganic ingredient containing compositions including slag. For the line between Class 106 and Class 65, see the reference to Class 106 in the definitions of Class 65.
