The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1993
Filed:
Mar. 06, 1992
Applicant:
Inventors:
Kenneth K Jiang, College Station, TX (US);
Bernie B Bernard, College Station, TX (US);
Assignee:
O. I. Corporation, College Station, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
96101 ; 95 82 ; 73 2341 ;
Abstract
A filter for preventing foam and debris from accumulation on the trap used in sample concentration apparatus is disclosed. The filter is preferably a sintered metal frit removably inserted in the concentrator inlet on a sparge vessel. The filter also serves as a check valve for preventing water vapor or residual analytes in the sparge vessel from contaminating dry gas or other external samples which pass through the concentrator inlet.