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. 30, 2020

Filed:

Apr. 05, 2018
Applicant:

Fluid Measurement Technologies, Inc., White Bear Lake, MN (US);

Inventors:

David Blackford, White Bear Lake, MN (US);

Derek Oberreit, Roseville, MN (US);

Donald C. Grant, Grand Marais, MN (US);

Gary Van Schooneveld, Eden Prairie, MN (US);

Mark R. Litchy, Plymouth, MN (US);

Assignee:

Fluid Management Technologies, Inc., White Bear Lake, MN (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N 15/02 (2006.01); G01N 15/06 (2006.01); G01N 15/00 (2006.01);
U.S. Cl.
CPC ...
G01N 15/0211 (2013.01); G01N 15/0255 (2013.01); G01N 15/065 (2013.01); G01N 2015/0053 (2013.01); G01N 2015/0088 (2013.01); G01N 2015/0261 (2013.01);
Abstract

A method and system of measuring the size distribution of particles within dilute colloids, for example, through variation of the minimum detected size of aerosolized colloid particles. The method of determining the size distribution of particles in a fluid, involves forming a stream of aerosol droplets of the fluid, the droplets containing particles and dissolved material evaporating the droplets to generate particles, and measuring the concentration of particles by varying a detection threshold. A system or apparatus for determining the size distribution of particles in a fluid, includes a droplet former for forming a stream, of aerosol droplets of the fluid, the droplets containing particles and dissolved material, and a condensation particle detector for evaporating the droplets to generate particles and for measuring the concentration of particles, the condensation particle detector having a variable detection threshold.


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