US PATENT SUBCLASS 501 / 87
.~ Carbide or oxycarbide containing


Current as of: June, 1999
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501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
87.~ Carbide or oxycarbide containing {2}
88  DF  .~.~> Silicon carbide {4}
93  DF  .~.~> Plural carbides (i.e., carbides of plural metals) containing


DEFINITION

Classification: 501/87

Carbide or oxycarbide containing:

(under subclass 1) Compositions which include at least one compound which is a binary compound of a metal directly bonded to carbon (i.e., a carbide) or is a ternary compound of a metal, carbon, and oxygen of the type: 2(ZrO2)C or ZrO.C (i.e., an oxycarbide or carboxide).

SEE OR SEARCH CLASS

51, Abrasive Tool Making Process, Material, or Composition, for a composition specialized for use as an abrasive. Patents containing claims to the abrasive function as well as claims to a function or use specifically provided for in Class 501 (e.g. refractory) are placed in this class (501) as originals and cross-referenced to Class 51, especially

307+, for abrasive compositions which may include carbides.

423, Chemistry of Inorganic Compounds,

439+, for carbide compound, per se.