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:
Jul. 07, 2015
Filed:
Feb. 29, 2012
Natalie L. Adolphi, Albuquerque, NM (US);
Edward R. Flynn, Albuquerque, NM (US);
Howard Bryant, Albuquerque, NM (US);
Kimberly Butler, Rockville, MD (US);
Natalie L. Adolphi, Albuquerque, NM (US);
Edward R. Flynn, Albuquerque, NM (US);
Howard Bryant, Albuquerque, NM (US);
Kimberly Butler, Rockville, MD (US);
STC.UNM, Albuquerque, NM (US);
Senior Scientific, LLC, Albuquerque, NM (US);
Abstract
A method for measuring the average viscosity of a test fluid uses calibrated magnetic nanoparticles, with certain chosen hydrodynamic diameters and actual lateral dimensions (e.g. diameters), that are mixed into a small volume of the test fluid and a single magnetic relaxation curve measurement to provide data for viscosity determination. The distribution of hydrodynamic particle sizes of an ensemble of magnetic nanoparticles that are magnetically blocked at room temperature can be determined. Modifications of the method can be used to determine the distribution of viscosities in a complex fluid at the sub-microscopic level providing a novel type of viscosity measurement.