US PATENT SUBCLASS 422 / 4
.~ A gas is substance acted upon

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

1  DF  PROCESS DISINFECTING, PRESERVING, DEODORIZING, OR STERILIZING {15}
4.~ A gas is substance acted upon

DEFINITION

Classification: 422/4

A gas is substance acted upon:

(under subclass 1) Process where the substance being acted upon is a gas.

(1) Note. There must be an intent to treat a gas. Using a gas as a carrier for a disinfectant or other material, etc., is placed below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9, for treatment of gas to render it nondestructive to metal.