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. 23, 2013
Filed:
Jun. 23, 2010
Xin Ai, San Jose, CA (US);
John David Bass, Union City, CA (US);
Ho-cheol Kim, San Jose, CA (US);
Robert Dennis Miller, San Jose, CA (US);
John Campbell Scott, Los Gatos, CA (US);
Qing Song, San Jose, CA (US);
Xin Ai, San Jose, CA (US);
John David Bass, Union City, CA (US);
Ho-Cheol Kim, San Jose, CA (US);
Robert Dennis Miller, San Jose, CA (US);
John Campbell Scott, Los Gatos, CA (US);
Qing Song, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Nanoparticles in a colloid are purified, with the colloid including a fluid, unwanted matter, and the nanoparticles to be purified. An electric field is applied that is substantially spatially uniform over a distance that is at least equal to a characteristic dimension of the nanoparticles, so that at least some of the nanoparticles move towards at least one collection surface as a result of the force arising between their electrical charge and the electric field, whereupon nanoparticles are collected on said at least one collection surface. The collection surface(s) may be one or more electrodes to which a voltage potential is applied. The collected nanoparticles are then removed from the collection surface, e.g., by dispersing them into another fluid.