US PATENT SUBCLASS 75 / 230
.~.~ With nonmetal constituent - Silicon(Si) considered a metal (e.g., cermet, etc.)

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}
228  DF  .~ Consolidated metal powder compositions {4}
230.~.~ With nonmetal constituent - Silicon(Si) considered a metal (e.g., cermet, etc.) {5}
231  DF  .~.~.~> Molybdenum sulfide or functional constituent (e.g., lubricant, abrasive, etc.)
232  DF  .~.~.~> Oxide containing {3}
236  DF  .~.~.~> Carbide containing {4}
243  DF  .~.~.~> Nonmetal is elemental Carbon(C) only
244  DF  .~.~.~> Containing Boron(B) or Nitrogen(N)

DEFINITION

Classification: 75/230

With nonmetal constituent - Silicon (Si) considered a metal (e.g., cermet, etc.):

(under subclass 228) Composition containing one of the following, in free or combined form: a noble gas, a halogen, a chalcogen (oxygen, sulfur, selenium or tellurium), nitrogen, phosphorus, carbon or boron.

(1) Note. Free silicon is considered to be a metal; a metal silicide is considered to be an intermetallic compound or alloy.

(2) Note. In this and the indented subclasses the presence or absence of hydrogen is ignored.

(3) Note. The recitation as part of the total composition of a material known to, or generally considered to, contain carbon, such as "steel" or "cast iron", puts the composition in this or an indented subclass.

(4) Note. See the notes to subclass 228, especially (3) Note, and to subclass 231 for the distinction between compositions for this class and compositions for Class 106.

(5) Note. See the notes to subclass 231 for the distinction between compositions for this class and compositions for Class 51 and Class 252.

SEE OR SEARCH CLASS

51, Abrasive Tool Making Process, Material, or Composition, 307+, for an abrasive tool making process or inorganic material to be used therein.

148, Metal Treatment,

24, for flux compositions containing metal and a nonmetal binder or slurrying agent to be used in the treatment of

solid metal.

149, Explosive and Thermic Compositions or Charges,

108.2, for a free metal-containing composition of that class.

419, Powder Metallurgy Processes,

10+, for powder metallurgy processes including a nonmetal and involving sintering.

428, Stock Material or Miscellaneous Articles,

539.5, for stock material having interengaged metal and nonmetal continuous phase; subclasses 564 and 565 for metallic composites having metal particles and nonmetal particles; and subclasses 639+ for composite metallic stock in which a component contains oxygen, sulfur, or an organic compound.