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:
Aug. 19, 2014
Filed:
Nov. 03, 2011
Applicants:
Oleg A. Mazyar, Houston, TX (US);
Soma Chakraborty, Houston, TX (US);
Terry R. Bussear, Spring, TX (US);
Michael H. Johnson, Katy, TX (US);
Inventors:
Oleg A. Mazyar, Houston, TX (US);
Soma Chakraborty, Houston, TX (US);
Terry R. Bussear, Spring, TX (US);
Michael H. Johnson, Katy, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/44 (2006.01); H01F 1/01 (2006.01); B82Y 30/00 (2011.01);
U.S. Cl.
CPC ...
H01F 1/01 (2013.01); B82Y 30/00 (2013.01); H01F 1/44 (2013.01); Y10S 977/777 (2013.01); Y10S 977/838 (2013.01);
Abstract
A nanoparticle composition comprises a ferromagnetic or superparamagnetic metal nanoparticle, and a functionalized carbonaceous coating on a surface of the ferromagnetic or superparamagnetic metal nanoparticle. A magnetorheological fluid comprises the nanoparticle composition.