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:
Jun. 05, 2018

Filed:

Apr. 01, 2016
Applicant:

Particle Measuring Systems, Inc., Boulder, CO (US);

Inventors:

James Lumpkin, Loveland, CO (US);

Matthew Melton, Boulder, CO (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); G01N 21/53 (2006.01); G01N 15/14 (2006.01); G01N 15/00 (2006.01); G01N 15/10 (2006.01);
U.S. Cl.
CPC ...
G01N 21/53 (2013.01); G01N 15/1429 (2013.01); G01N 15/1459 (2013.01); G01N 2015/0038 (2013.01); G01N 2015/0053 (2013.01); G01N 2015/1006 (2013.01); G01N 2015/1488 (2013.01);
Abstract

This invention relates to optical particle counters and methods capable of effectively distinguishing signals generated from particle light scattering from sources of noise. Embodiments of the invention, for example, use multisensory detector configurations for identifying and distinguishing signals corresponding to fluctuations in laser intensity from signals corresponding to particle light scattering for the detection and characterization of submicron particles. In an embodiment, for example, methods and systems of the invention compare signals from different detector elements of a detector array to identify and characterize noise events, such as noise generated from laser intensity instability, thereby allow for the detection and characterization of smaller particles. The system and methods of the present invention, thus, provide an effective means of reducing false positives caused by noise or interference while allowing for very sensitive particle detection.


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