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:
Jan. 15, 2008
Filed:
Aug. 13, 2004
Xiangdong Feng, Broadview Heights, OH (US);
Christopher J. Szepesi, State College, PA (US);
Heber E. Rast, Iii, The Woodlands, TX (US);
Mike S. H. Chu, Lewiston, NY (US);
James H. Adair, State College, PA (US);
Xiangdong Feng, Broadview Heights, OH (US);
Christopher J. Szepesi, State College, PA (US);
Heber E. Rast, III, The Woodlands, TX (US);
Mike S. H. Chu, Lewiston, NY (US);
James H. Adair, State College, PA (US);
Ferro Corporation, Cleveland, OH (US);
The Penn State Research Foundation, University Park, PA (US);
Abstract
The present invention provides a method of removing spectator ions and contaminants from aqueous suspensions of solid particles. In accordance with the method of the invention, the solid particles are transported across a phase boundary into a non-polar organic solvent, leaving the spectator ions and contaminants in the aqueous phase. To facilitate the efficient transportation of the solid particles across the phase boundary, the surface of the solid particles is coated with an amphiphilic polyelectrolyte. If desired, the solid particles can be recovered from the organic phase by evaporating the organic solvent.