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.

Date of Patent:
Jul. 01, 2025

Filed:

Mar. 16, 2023
Applicants:

Longpath Technologies, Inc., Boulder, CO (US);

The Regents of the University of Colorado, a Body Corporate, Denver, CO (US);

Inventors:

Gregory B. Rieker, Boulder, CO (US);

Robert J. Wright, Boulder, CO (US);

Caroline B. Alden, Boulder, CO (US);

Sean C. Coburn, Longmont, CO (US);

David Wilson, Boulder, CO (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/3504 (2014.01); G01J 3/02 (2006.01); G01J 3/42 (2006.01); G01M 3/38 (2006.01); G01N 21/17 (2006.01); G01V 8/22 (2006.01);
U.S. Cl.
CPC ...
G01N 21/3504 (2013.01); G01J 3/021 (2013.01); G01J 3/42 (2013.01); G01M 3/38 (2013.01); G01V 8/22 (2013.01); G01N 2021/1795 (2013.01);
Abstract

A method for characterizing gas emissions includes measuring first and second optical beams to generate first and second absorption signals, respectively. Each of the optical beams is transmitted from a center point and retroreflected back to the center point. Paths of the optical beams define boundaries of a sector. Based on the absorption signals, an emission rate of a gas from within the sector is determined. If the emission rate exceeds a threshold, a third optical beam is measured to generate a third absorption signal. The third optical beam is transmitted from the center point and retroreflected back to the center point. The third optical beam propagates along a path that divides the sector into first and second subsectors. Based on the first, second, and third absorption signals, a location of a source of the gas is identified as being within the first subsector or the second subsector.


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