US PATENT SUBCLASS 522 / 915
INVOLVING INERT GAS, STEAM, NITROGEN GAS, OR CARBON DIOXIDE

Current as of: June, 1999
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522 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

915INVOLVING INERT GAS, STEAM, NITROGEN GAS, OR CARBON DIOXIDE

DEFINITION

Classification: 522/915

INVOLVING INERT GAS, STEAM, NITROGEN GAS, OR CARBON DIOXIDE:

Subject matter wherein wave energy is transmitted through a medium of an inert gas, steam, nitrogen gas, or carbon dioxide and which medium is in direct contact with the material treated by the wave energy.

(1) Note. Nitrogen gas or carbon dioxide in air is not considered as being nitrogen gas or carbon dioxide for this subclass.