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. 12, 2021
Filed:
Nov. 16, 2020
Applicant:
University of Wyoming, Laramie, WY (US);
Inventor:
Paul E. Johnson, Fort Collins, CO (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); G01N 15/14 (2006.01);
U.S. Cl.
CPC ...
G01N 15/1404 (2013.01); G01N 15/1436 (2013.01); G01N 2015/144 (2013.01); G01N 2015/1486 (2013.01);
Abstract
Methods and apparatus for improving signal-to-noise ratio in a Fountain Flow cytometer by reducing the background light intensity. One approach includes constraining an interrogated volume of the sample (e.g., by adding a light absorbing reagent to the sample or introducing a bend into a flow cell through which the sample flows). Another approach includes minimizing Raman scattering from the sample by choosing an excitation filter and an emission filter configured to narrowly encompass light at wavelengths within system excitation and emission peaks.