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:
May. 28, 2002
Filed:
Jul. 08, 1999
Applicant:
Inventors:
Harry C. Lord, Pasadena, CA (US);
Marc M. Baum, Baldwin Park, CA (US);
Assignee:
Air Instruments and Measurements, Inc., Baldwin Park, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/135 ; G01N 2/161 ;
U.S. Cl.
CPC ...
G01N 2/135 ; G01N 2/161 ;
Abstract
Instrumentation to detect the presence of, or to measure the concentration of, a gas or pollutant in a gaseous environment. With the use of spectroscopic techniques and energy beams having suitable wavelengths, the presence and concentrations of these can be detected and measured, not only in flowing streams such as in process streams or exhaust stacks, but above a ground area, around its perimeter, or across the road. A calibration means including an internal audit cell and a retrodirective reflector is also shown.