US PATENT SUBCLASS 75 / 237
.~.~.~.~ With another 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}
228  DF  .~ Consolidated metal powder compositions {4}
230  DF  .~.~ With nonmetal constituent - Silicon(Si) considered a metal (e.g., cermet, etc.) {5}
236  DF  .~.~.~ Carbide containing {4}
237.~.~.~.~ With another nonmetal {1}
238  DF  .~.~.~.~.~> Nonmetal is Boron(B) or Nitrogen(N)


DEFINITION

Classification: 75/237

With another nonmetal:

(under subclass 236) Composition containing another nonmetal, other than carbide.

(1) Note. See the definition of subclass 230, (1) Note, for a list of elements considered to be nonmetals in this classification schedule.

(2) Note. Free carbon is considered to be "another nonmetal" for this subclass.

SEE OR SEARCH CLASS

125, Stone Working,

11, for dressing of grinding wheels.

338, Electrical Resistors,

330, for an electric resistance element integral with a terminal. 425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

470, for a shaping or casting surface of that class.