US PATENT SUBCLASS 75 / 300
COMPOSITIONS

Current as of: June, 1999
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75 /   HD   SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

300COMPOSITIONS {5}
301  DF  .~> Reactive furnace lining
302  DF  .~> Welding rod or electrode defined by composition
303  DF  .~> Solid treating composition for liquid metal (e.g., flux, slagging agent, casting agent, etc.) or charge {9}
228  DF  .~> Consolidated metal powder compositions {4}
255  DF  .~> Loose particulate mixture (i.e., composition) containing metal particles {1}

DEFINITION

Classification: 75/300

COMPOSITIONS:

(under the class definition) Compositions that are: (A) reactive furnace linings; (B) charges or solid treating compositions, not elsewhere provided, for producing free metal or alloys from metalliferous materials or for treating liquid metal; (C) gaseous and liquid compositions, not elsewhere provided, used in the production of free metal or

alloys or used in the treatment of liquid metal; (D) consolidated metal powder compositions having a continuous free metal phase, such as produced by a Class 419 process; (E) loose particulate mixtures (i.e., compositions) containing (a) particles of one free metal mixed with particles of another free metal or alloy; (b) particles of one alloy mixed with particles of another alloy or (c) particles of free metal or alloy mixed with nonfree metal containing particles and not elsewhere provided.

(1) Note. Processes of making the compositions of the type mentioned in A, B, or C will be found elsewhere in this class. See "SEARCH THIS CLASS, SUBCLASS" below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

330, for processes of making a metallurgical treating agent which process does not involve consolidation.

746, for processes of making a metallurgical treating agent which process involves consolidation.

SEE OR SEARCH CLASS

44, Fuel and Related Compositions, for fuel compositions intended to provide only heat for a Class 75 or Class 420 operation. 48, Gas: Heating and Illuminating, for gas compositions intended to provide only heat for a Class 75 or Class 420 operation.

106, Compositions: Coating or Plastic, for metal depositing compositions, coating repellent, polishes, corrosion inhibiting coatings, molding compositions, sodium silicate or hydrosetting compositions, bituminous compositions used for coating metalliferous materials or for agglomerates in general.

148, Metal Treatment, for compositions for treating solid metals (e.g., soldering flux, galvanizing flux, welding composition, surface treating compositions, etc.) and

240+, for reactive coating compositions that react with a metal base to form a coating thereon.

149, Explosive and Thermic Compositions or Charges, for exothermic compositions for treating metalliferous materials. Particularly, see

5+, 20+, 30+ or 37+ for compositions which (1) contain at least one free metal or metalloid and at least one Oxygen (O) supplying material and (2) are capable of reacting to yield heat and reaction by-products.

(1) Note. The line between Class 149 and Class 75 is difficult due to the similarity of ingredients in the

compositions. If there is a positive recitation of exothermic utility, the original goes to Class 149 even if the composition is used in a Class 75 process. If the composition is used in a Class 75 process and there is no positive recitation of exothermic utility, it goes to Class 75 as an original.

(2) Note. Patents having claims to both a Class 75 process and a Class 149 composition go to Class 75 as original and are crossed to Class 149.

219, Electric Heating, for electric heating devices, particularly

145.1+, for welding rod or electrode having significant structure and defined by composition.

228, Metal Fusion Bonding, for metal fusion bonding means, particularly 56.3, for solder having significant structure or subclass 50 for seam backup means having significant structure.

252, Compositions, for physical separation, etching or brightening, descaling, detergents, getters, chemical agents, solids with solution or dispersion aids, solvents, gaseous compositions, preservation agents.

420, Alloys or Metallic Compositions, for alloys or metallic compositions having a continuous metal phase.

(1) Note. Class 420 alloys go as original to Class 420 even if used as treating agents. If a Class 420 material is combined with another ingredient to provide a solid treating composition for liquid metal, the original goes to Class 75, if not provided for elsewhere.

(2) Note. Consolidated metal powder compositions produced by a Class 419 process go as original to Class 75 and are not provided for in Class 420 even though a continuous metal phase may be present.

428, Stock Material or Miscellaneous Articles, for material or articles having some structure. See section 5 for the relationship between Class 428 and the composition classes. In general, when claims mention the article by name only and define it in terms of composition, the original goes to the composition class.

(1) Note. Welding rods or welding electrodes defined only in terms of composition are placed in Class 75 subclass 302. Flux defined by composition in wire form or in a container go as original to Class 75 subclass 304 unless there is significant structural description.

501, Compositions: Ceramic, for glass and refractory compositions containing metalliferous materials.

502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making, for catalysts or solid sorbents that contain metalliferous materials.