US PATENT SUBCLASS 264 / 29.6
.~ In specific atmosphere (except vacuum or air)

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

29.1  DF  CARBONIZING TO FORM ARTICLE {6}
29.6.~ In specific atmosphere (except vacuum or air)

DEFINITION

Classification: 264/29.6

(under subclass 29.1) Processes wherein one step of carbonization takes place in a specifically recited atmosphere other than vacuum or air.

(1) Note. The recitations inert, nonoxidizing, or the like shall be considered sufficient to place the patent in this subclass.

(2) Note. One step of carbonizing may occur in an oxidizing atmosphere as long as the process also includes a step of carbonizing under nonoxidizing conditions.