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:
Jul. 13, 2010
Filed:
Jan. 22, 2008
Applicants:
Maruti Bhandakar, E. Weymouth, MA (US);
Joseph Peters, Quincy, MA (US);
Inventors:
Maruti Bhandakar, E. Weymouth, MA (US);
Joseph Peters, Quincy, MA (US);
Assignee:
Stone & Webster, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/06 (2006.01); G01N 27/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of measuring the level of an impurity in a gas comprises providing a gas detection tube having a internal volume containing a reagent which can react with said impurity to produce a compound capable of producing a color change in said tube such that the extent of the color change is proportional to the concentration of the impurity in said gas. A volume of the gas at least 1×10times the test volume of the gas detection tube is passed through the tube and the extent of the color change of the detector element is measured.