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Class 075 :: SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

Definition

This is the generic class for specialized metallurgical processes for producing or recovering metals from metal compounds, ores, or scrap metal and for refining liquid metal and for compositions used in these specialized metallurgical processes, consolidated metal powder compositions, and loose metal particulate mixtures.

Included in this class are patents drawn to:

(A) Processes for the production of solid, particulate free metal directly from liquid metal.

(B) Processes for the production or purification of free metal powder or the production or purification of alloys in powder form.

(C) Processes for the production or refining of free metal or alloys that use the electrothermal effects of electricity or electromagnetic wave energy or that use magnetism or electrostatics.

(D) Processes for the production of free metal by smelting, roasting, or furnace methods (a.k.a., pyrometallurgy) or by using a nonmetallic material which is liquid under standard conditions (a.k.a., hydrometallurgy).

(E) Processes for the treatment of liquid metal or melting metal.

(F) Processes for consolidating metalliferous charges or treating agents that are used in other processes of this class by agglomerating, compacting, indurating, or sintering.

(G) Compositions, not elsewhere provided for, disclosed as useful in metallurgical processes (e.g., reactive furnace linings, charges or solid treating compositions for producing free metal or alloys from metalliferous materials, gaseous or liquid compositions used in the production of free metal or alloys or used in the treatment of liquid metal) and processes of manufacturing compositions useful in metallurgical processes.

(H) Consolidated metal powder compositions having a continuous free metal phase, such as those produced by a process of the class of Powder Metallurgy Processes. See Lines With Other Classes and Within This Class, 1., below.

(I) Loose metal particulate mixtures.

LINES WITH OTHER CLASSESA. LIST OF CLASSES OF CHEMICAL COMPOUNDS AND COMPOSITIONS USED IN METALLURGICAL PROCESSES148, Metal Treatment.149, Explosive and Thermic Compositions or Charges.252, Compositions.423, Chemistry of Inorganic Compounds.507, Earth Boring, Well Treating, and Oil Field Chemistry.508, Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions.

B. LIST OF CLASSES OF FREE METAL PRODUCTS148, Metal Treatment.420, Alloys or Metallic Compositions.428, Stock Material or Miscellaneous Articles.502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making.

C. LIST OF PROCESS CLASSES65, Glass Manufacturing.148, Metal Treatment.164, Metal Founding.204, Chemistry: Electrical and Wave Energy.209, Classifying, Separating, and Assorting Solids.241, Solid Material Comminution or Disintegration.264, Plastic and Nonmetallic Article Shaping or Treating: Processes.266, Metallurgical Apparatus.419, Powder Metallurgy Processes.420, Alloys or Metallic Compositions.423, Chemistry of Inorganic Compounds.502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making.505, Superconductor Technology: Apparatus, Material, Process.

D. ORDER OF SUPERIORITY AMONG VARIOUS METAL, ALLOY, AND METAL STOCK AREAS AND METHODS OF MANUFACTURE INVOLVING THEM.

The order of superiority among various metal, alloy, and metal stock areas and methods of manufacture involving them is as follows:1. Class 419, Powder Metallurgy Processes.2. Class 148, Metal Treatment, subclasses 22+, compositions for treatment of solid metal.3. Class 75, Specialized Metallurgical Processes, Compositions for Use therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, subclasses 300,301, and 303+, gaseous, liquid, or solid treating compositions for liquid metal or charges, and subclass 302, welding rod defined by composition.4. Class 75, Specialized Metallurgical Processes, Compositions for Use therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, subclasses 228+, consolidated metal powder compositions and subclasses 255+, loose metal particulate mixtures.5. Class 420, Alloys or Metallic Compositions, claimed as products.6. Class 148, Metal Treatment, subclasses 95-122, 194-287, and 500-714, in class schedule order, providing for certain processes of treating solid or semi-solid metal by modifying or maintaining internal physical structure (i.e., microstructure) or chemical properties of metal, processes of reactive coating of metal or processes of chemical-heat removing (e.g., flame-cutting etc.) or burning of metal. However, if metal casting, fusion bonding, machining, or working is involved, there is a requirement of significant heat treatment as described in the Class 148 definition, Lines With Other Classes, “Metal Casting, Metal Fusion Bonding, Machining, or Working Classes”.7. Class 148, Metal Treatment, subclasses 33+, barrier layer stock material and subclasses 400+, stock.8. Class 75, Specialized Metallurgical Processes, Compositions for Use therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, subclasses 331+, processes of making solid particulate alloys directly from liquid metal and subclasses 343+, processes of producing or purifying alloys in powder form.9. Class 75, Specialized Metallurgical Processes, Compositions for Use therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, subclasses 10.1+ and 10.67, processes of making alloys by electrothermic, electromagnetic, or electrostatic processes.10. Class 420, Alloys or Metallic Compositions, processes of manufacture.11. Class 75, Specialized Metallurgical Processes, Compositions for Use therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, subclasses 330+, processes of making metal and processes or treating liquid metals and liquid alloys and consolidating metalliferous material.12. Class 204, Chemistry: Electrical and Wave Energy, processes.13. Class 164, Metal Founding, subclasses 1+, processes.14. Class 266, Metallurgical Apparatus, subclasses 44+, processes of operating metallurgical apparatus.15. Class 216, Etching a Substrate: Processes.

This list is not complete and may be added to as the proper relationship of other areas is determined.

The rules for determining Class placement of the Original Reference (OR) for claimed chemical compositions are set forth in the Class Definition of Class 252 in the section LINES WITH OTHER CLASSES AND WITHIN THIS CLASS, subsection COMPOSITION CLASS SUPERIORITY, which includes a hierarchical ORDER OF SUPERIORITY FOR COMPOSITION CLASSES.

Subclasses List