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:
Oct. 23, 2001
Filed:
Dec. 31, 1998
Applicant:
Inventors:
John D. Didomenico, Tucson, AZ (US);
Craig S. Rendahl, Tucson, AZ (US);
Assignee:
Envirotest Systems Corp., Sunnyvale, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/135 ;
U.S. Cl.
CPC ...
G01N 2/135 ;
Abstract
The present invention relates to a system and method for selecting a detection bandwidth centered about a characteristic wavelength of the species to be detected and such that the detection of contaminants is greatly reduced. Contaminants such as pollutants, dust and water are some of the examples of undesirable substances which may be detected by RSD. By selecting the appropriate bandwidth in accordance with this invention, the detection of a desired substance can be separated from the undesirable detection of contaminants.