US PATENT SUBCLASS 428 / 367
.~.~ Including free carbon or carbide or therewith (not as steel)

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

357  DF  COATED OR STRUCTUALLY DEFINED FLAKE, PARTICLE, CELL, STRAND, STRAND PORTION, ROD, FILAMENT, MACROSCOPIC FIBER OR MASS THEREOF {5}
364  DF  .~ Rod, strand, filament or fiber {9}
367.~.~ Including free carbon or carbide or therewith (not as steel) {1}
368  DF  .~.~.~> In coating or impregnation

DEFINITION

Classification: 428/367

(under subclass 364) Product in which carbon, as either the element or as a compound thereof, comprises the rod, strand or fiber or filament or is present as a covering on a rod, strand, fiber or filament of another material.

(1) Note. Excluded from this subclass is a product in which the carbon or its compound is a minor constituent of steel or other alloy; fibers, filaments, etc., of steel or other alloy will be found in other subclasses below on other features (see subclasses 379+). This subclass 367 is intended to be the locus for the high modulus carbon fiber or filament.

SEE OR SEARCH CLASS

423, Chemistry of Inorganic Compounds,

414+, for a process for making free carbon or a compound thereof or the product, per se, (e.g., rod, fiber, etc.) where no significant structure is recited.