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:
Dec. 09, 2003
Filed:
Oct. 15, 2001
Applicant:
Inventors:
Wenjun Yang, San Jose, CA (US);
Peter C. Hsi, Fremont, CA (US);
Assignee:
RAE Systems, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/762 ; G01N 3/002 ; G01N 1/00 ;
U.S. Cl.
CPC ...
G01N 2/762 ; G01N 3/002 ; G01N 1/00 ;
Abstract
A gas analysis system and method use foreground broadband gas monitoring and background selective gas analysis. The foreground broadband monitoring indicates concentrations of a class of chemicals or contaminants in a gas sample, provides real-time warnings of contaminants, and can activate the background selective analysis. Separate broadband detectors and gas analyzers can respectively perform broadband monitoring and selective analysis. To reduce system components, a broadband detector that performs broadband monitoring switches to measure concentrations of chemicals output from a separation device for the selective analysis.