US PATENT SUBCLASS 266 / 44
PROCESS
Current as of: June, 1999
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DEFINITION
Classification: 266/44
(under the class definition) Methods of operating metallurgical apparatus which are solely directed to those steps of operating such an apparatus which do not effect a
chemical or physical change in the work being treated.
(1) Note. Examples of the types of methods to be found herein are methods of cooling a furnace or some part thereof, a method of operating tuyeres in a certain sequence where no metallurgical action is attributable to such an operation, methods of plugging furnaces and like treating vessels not elsewhere provided for, methods of tapping a vessel, etc.
(2) Note. Only those patents which contain claims to methods not elsewhere provided for should be placed in this or the indented subclasses as either an original or a cross-reference.
SEE OR SEARCH CLASS
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, appropriate subclasses for methods of treating ores extracting, refining or melting metals.
148, Metal Treatment, appropriate subclasses for processes of treating solid or semi-solid metal to modify or maintain the internal physical structure (i.e., microstructure) or chemical property of metal.
