US PATENT SUBCLASS 264 / 85
UTILIZING SPECIAL INERT GASEOUS ATMOSPHERE OR FLUSHING MOLD WITH INERT LIQUID


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

85UTILIZING SPECIAL INERT GASEOUS ATMOSPHERE OR FLUSHING MOLD WITH INERT LIQUID


DEFINITION

Classification: 264/85

(under the class definition) Processes wherein (1) a named nonreactive gas is used as the environment for the shaping, working, or treating operation on a material or (2) the ambient atmosphere of a mold is replaced by a nonreactive liquid.

(1) Note. To be placed in this subclass as an original patent the invention claimed must specify a particular inert atmosphere such as, for example, nitrogen or carbon dioxide. The term "inert" alone in a claim is not sufficient to place the patent in this subclass. Also air and steam have been excluded from this subclass even though they may be claimed as inert materials.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39, for solvent flushing a mold to dissolve contaminants from its surface.

65, for processes for firing or vitrifying wherein the composition of the atmosphere is controlled.