US PATENT SUBCLASS 423 / 445 R
.~ Elemental carbon

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

414  DF  CARBON OR COMPOUND THEREOF {3}
445 R.~ Elemental carbon {7}
446  DF  .~.~> Diamond
447.1  DF  .~.~> Fiber, fabric, or textile {7}
448  DF  .~.~> Graphite
449.1  DF  .~.~> Carbon black (e.g., lampblack) {6}
460  DF  .~.~> Treating carbon
461  DF  .~.~> Recovery or purification
445 B  DF  .~.~> Fullerene (e.g., C60, C70, etc.)

Unofficial Alpha Subclasses: R B

DEFINITION

Classification: 423/445

(under subclass 414) Products or processes wherein the product is free carbon in substantially pure form.

(1) Note. See the note in the Class 264 class definition II. A. (10) for the line between Class 264 and Class 423 subclasses 445+ concerning combined processes of molding and carbonizing.

SEE OR SEARCH CLASS

201, Distillation: Processes, Thermolytic, appropriate subclasses, for a process of making coke.

502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making,

174+, for compositions of and methods of making inorganic carbon containing catalyst or precursor therefor, subclasses 416+ for compositions of and methods of making solid sorbent compositions including elemental carbon.

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 32, for colloid systems of colloid-sized solid or semisolid material which is primarily Carbon (such as graphite or diamond) dispersed in primarily organic continuous liquid phase, subclasses 38+ for colloid systems of colloid-sized bituminous, coal, or Carbon phase dispersed in aqueous continuous liquid phase, cross-reference art collection 901 for collection of art under the Class definition related to colloid systems of substantially pure elemental Carbon (such as graphite, diamond, Carbon black, lamp black, Fullerenes); or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.