US PATENT SUBCLASS 423 / 447.4
.~.~.~ Prior treatment before carbonization (except with gaseous oxygen)


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

414  DF  CARBON OR COMPOUND THEREOF {3}
445 R  DF  .~ Elemental carbon {7}
447.1  DF  .~.~ Fiber, fabric, or textile {7}
447.4.~.~.~ Prior treatment before carbonization (except with gaseous oxygen) {1}
447.5  DF  .~.~.~.~> With metal, metal compound, or phosphorus compound


DEFINITION

Classification: 423/447.4

(under subclass 447.1) Processes wherein prior to a reaction to convert a fiber, fabric or textile article to carbon, the article is treated with a substance other than gaseous oxygen which substance either (a) chemically reacts with the article or (b) is retained in the article at least until the commencement of a reaction to convert the article to carbon.