US PATENT SUBCLASS 436 / 181
.~ Gaseous sample or with change of physical state

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

Internet Version by PATENTEC © 1999      Terms of Use


436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

174  DF  INCLUDING SAMPLE PREPARATION {6}
181.~ Gaseous sample or with change of physical state

DEFINITION

Classification: 436/181

Gaseous sample or with change of physical state:

(under subclass 174) Processes including step of sampling a vaporous or gaseous material to be analyzed, or changing the physical state of a sample.

(1) Note. This subclass will provide for a process in which the gaseous sample is produced by vaporization of a liquid.

(2) Note. A change of physical state includes melting and solidification.