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:
Oct. 08, 2009
Rui Shen, Rochester, NY (US);
Hong Yang, Rochester, NY (US);
Shai N. Shafrir, Rochester, NY (US);
Chunlin Miao, Rochester, NY (US);
Mimi Wang, San Marino, CA (US);
Joni Mici, Worcester, MA (US);
John C. Lambropoulos, Pittsford, NY (US);
Stephen D. Jacobs, Pittsford, NY (US);
Rui Shen, Rochester, NY (US);
Hong Yang, Rochester, NY (US);
Shai N. Shafrir, Rochester, NY (US);
Chunlin Miao, Rochester, NY (US);
Mimi Wang, San Marino, CA (US);
Joni Mici, Worcester, MA (US);
John C. Lambropoulos, Pittsford, NY (US);
Stephen D. Jacobs, Pittsford, NY (US);
University of Rochester, Rochester, NY (US);
Abstract
A magnetorheological material comprises a magnetic particle and a ceramic material, wherein the magnetorheological material is in a dried form and further wherein a portion of the ceramic material is in the form of a nanocrystalline coating over the entire exterior surface of the magnetic particle and another portion of the ceramic material is in the form of a free nanocrystal. A magnetorheological material comprises a magnetic particle having a ceramic material coating over an external surface thereof as a result of a coating process, and a free nanocrystal of the ceramic material in the form of a residual by-product of the coating process. A sol-gel process for making a magnetorheological product comprises providing a sol of a desired ceramic coating material; combining a desired quantity of carbonyl iron (CI) particles with the sol to coat the CI particles with the ceramic coating material; creating a resulting quantity of nanocrystalline ceramic material-coated CI particles and a quantity of free nanocrystals of the ceramic material; and, drying the resulting quantity of coated CI particles and free nanocrystals to a moisture content equal to or less than 2 wt %.