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:
Feb. 28, 2006
Filed:
Nov. 14, 2002
William A. Von Drasek, Oak Forest, IL (US);
David Sonnenfroh, North Andover, MA (US);
Mark G. Allen, Boston, MA (US);
Joy Stafford-evans, Andover, MA (US);
William A. Von Drasek, Oak Forest, IL (US);
David Sonnenfroh, North Andover, MA (US);
Mark G. Allen, Boston, MA (US);
Joy Stafford-Evans, Andover, MA (US);
Air Liquide America L.P., Houston, TX (US);
Physical Sciences, Inc., Andover, MA (US);
Abstract
An apparatus and method for simultaneous detection of N gas species through laser radiation attenuation techniques is disclosed. Each of the N species has a spectral absorption band. N laser sources operate at a wavelength λin a spectral absorption band separated by the cutoff wavelength for single-mode transmission. Each laser source corresponds to a gas species and transmits radiation through an optical fiber constructed and arranged to provide single-mode transmission with minimal power loss.