US PATENT SUBCLASS 422 / 122
.~ Including solid, extended surface, fluid contact reaction means (e.g., Raschig rings, particulate or monolithic catalyst, etc.)

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

120  DF  FOR DEODORIZING OF, OR CHEMICAL PURIFICATION OF, OR GENERATION OF, LIFE-SUSTAINING ENVIRONMENTAL GAS {3}
122.~ Including solid, extended surface, fluid contact reaction means (e.g., Raschig rings, particulate or monolithic catalyst, etc.)

DEFINITION

Classification: 422/122

Including solid, extended surface, fluid contact reaction means (e.g., Raschig rings, particulate or monolithic catalyst, etc.):

(under subclass 120) Apparatus having an extended surface

contact reaction means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

177+, 190+, and 211+, for this structure in a waste gas purifier, in plural stages, and a single stage, respectively.