US PATENT SUBCLASS 75 / 252
.~.~ Mixture contains particles of nonmetal

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

300  DF  COMPOSITIONS {5}
255  DF  .~ Loose particulate mixture (i.e., composition) containing metal particles {1}
252.~.~ Mixture contains particles of nonmetal {2}
253  DF  .~.~.~> Halogen containing particles
254  DF  .~.~.~> Boron(B) containing particles

DEFINITION

Classification: 75/252

Mixture contains particles of nonmetal:

(under subclass 251) Subject matter containing, in loose, particulate form, (a) a metal, that is, a pure metal, an alloy, an intermetallic compound or an agglomerate which is more than half free metal, and (b) a nonmetal, that is, a material which is more than half by weight of a nonmetal element or compound of such element.

(1) Note. A patent drawn to a mixture having a component provided for in the title of subclasses indented hereunder are placed in the indented subclasses and are not cross-referenced to this subclass, even though the mixture may have components not provided for in the title of the indented subclass.

(2) Note. The search notes below indicate that the line between this subclass, on the one hand, and Class 106 metal depositing compositions and Class 148 fluxes, on the other hand, depends upon the presence of a nonmetal vehicle in the composition. Such vehicle need not be claimed for original placement of a patent in these other classes where the composition is disclosed as usable only in combination with the vehicle. Such a patent should be cross-referenced here (subclasses 252+).

SEE OR SEARCH THIS CLASS, SUBCLASS:

230+, for products resulting from the consolidation of particle mixtures of this subclass, and the definition of subclass 230 for a list of nonmetal elements.

256, for consolidated compositions having metal particles distributed in a nonmetal continuous phase, such compositions being designed for use as charges to a metallurgical

furnace.

SEE OR SEARCH CLASS 44, Fuel and Related Compositions,

252+, for a mixture of a particulate metal with a nonmetal which can react exothermically with it by activation with water.

106, Compositions: Coating or Plastic,

1.05, for metal-depositing coating compositions which contain metal particles and a nonmetal vehicle which makes a coherent composition, whether liquid, solid, plastic, pasty, etc., and which facilitates application to a surface to be metallized at ordinary temperatures.

148, Metal Treatment,

24, for compositions containing metal particles, a fluxing component, and a nonmetal vehicle which makes a coherent composition, whether liquid, solid, plastic, pasty, etc., and which facilitates application to a solid metal at ordinary temperatures. Subclass 24 also includes methods for fluxing which comprise the mere use of compositions classifiable herein (subclasses 252+).

149, Explosive and Thermic Compositions or Charges, especially

37+, 87 and 108.2 for a mixture of a particulate metal with a nonmetal which can react exothermically with it.

228, Metal Fusion Bonding,

224, for a process of surface bonding a metal to another metal or a nonmetal where a powdered filler material, mixed with a flux, is employed. Where a patent claims both the bonding process and an unconsolidated metal particle composition used in the bonding, the patent is placed in Class 228 and cross-referenced here.

428, Stock Material or Miscellaneous Articles,

558, and 560+ for solid welding rods coated with or containing particulate mixtures of the type classified here, or in Class 106, subclass 1.05, or Class 148, subclass 24.