US PATENT SUBCLASS 148 / 400
STOCK

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

400STOCK {20}
401  DF  .~> Radioactive
300  DF  .~> Magnetic {7}
316  DF  .~> Carburized or nitrided {2}
402  DF  .~> Mechanical memory
403  DF  .~> Amorphous, i.e., glassy
404  DF  .~> Directionally solidified
320  DF  .~> Ferrous (i.e., iron base) {10}
405  DF  .~> Age or precipitation hardened or strengthened {7}
420  DF  .~> Magnesium base
421  DF  .~> Titanium, zirconium, or hafnium base
422  DF  .~> Vanadium, niobum, or tantalum base
423  DF  .~> Chromium, molybdenum, or tungsten base
424  DF  .~> Manganese base
425  DF  .~> Cobalt base
426  DF  .~> Nickel base {2}
430  DF  .~> Noble metal base {1}
432  DF  .~> Copper base {4}
437  DF  .~> Aluminum base {2}
441  DF  .~> Zinc base
442  DF  .~> Containing over 50 per cent metal, but no base metal

DEFINITION

Classification: 148/400

STOCK:

Elemental metal, alloys or metallic compositions which (a) are the product of a process or this class (148) e.g., heat treated, age hardened etc., (b) are claimed in terms of specific magnetic properties, (c) are amorphous, (d) possess the property of shape memory, (e) are the product of significant Class 164, Metal Founding, step, e.g., chill cast, directionally solidified etc., or (f) are the product of the dispersion of particulate matter in molten metal which particulate matter retains its identity in the final product, e.g., dispersion strengthened.

(1) Note. An alloy or metallic composition defined solely in terms of its elemental constituents is classified in Class 420, Alloys or Metallic Compositions, whether or not such a claim includes a recitation of physical or chemical properties such as noncorrosiveness, hardness or ductility which are inherent in the alloy or metallic composition.

(2) Note. As to (a) of this subclass definition the recitation of chemical or physical properties which are the result of a Class 148 process of treatment is proper for this or indented subclasses. As to (e) of this subclass definition a significant Class 164 step is one in which there is a particular Class 164 manipulation intended to control the internal structure of the product. The recitations "chill cast" and "directionally solidified" are considered to be significant Class 164 manipulations. As to (f) of this subclass definition there must be a clear disclosure that the particles remain as such in the product for placement hereunder. Cases of doubt will be resolved by placement in Class 420.

(3) Note. The order of superiority among various alloy, metallic composition and metal stock areas and methods of

manufacture involving them is as follows:

1. Class 419, Powder Metallurgy Processes.

2. Class 75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, etc., subclasses 228+, consolidated metal powder composition.

3. Class 420, Alloys or Metallic Compositions, claimed as products. 4. Class 148, Metal Treatment, subclasses 2 through 30 in class schedule order, providing for methods of treatment of solid metal.

5. Class 148, Metal Treatment, subclasses 400+, stock.

6. Class 420, Alloys or Metallic Compositions, processes of making including melting.

7. Class 164, Metal Founding.

This list is not complete but may be added to as the proper relationship of other areas is determined. For a more comprehensive discussion of other metallurgical areas and the relationship among them see the definition, of Class 420, Alloys or Metallic Compositions.

(4) Note. In general, no cross-references have been placed in this, or indented subclasses based on disclosure from Class 420, Alloys or Metallic Compositions. Thus a search for unclaimed disclosure of stock for this and indented subclasses should be made in the appropriate subclasses of Class 420 based on the composition of the material. The only exception of this rule is subclasses 402 to 404 of this class which serve as digests for their subject matter disclosed in Class 420 original patents. Also, in general no cross-references have been placed in Class 420 from this and indented subclasses based on disclosure of the composition of the stock in this and indented subclasses. The only exception to this rule is the cross-reference are collections of Class 420, subclasses 901 to 903 which also serve as a collection point for pertinent disclosure from this and indented subclasses.

(5) Note. 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.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

411.1+, and 615+ for nonmetallic and metallic composites, respectively, defined in terms of the composition of their components, and the main Class Definition of the class (428), sections VI, B, VI, C4 and VI, C6, for the distinction between stock materials for that class (428) and a "stock" classified herein.