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:
Mar. 20, 2007
Filed:
Jan. 07, 2004
Thomas Kenneth Bednarz, Richmond, VA (US);
Allan Cairncross, Hockessin, DE (US);
John Edwin Gantzhorn, Jr., Hockessin, DE (US);
George Yeaman Thomson, Jr., Oxford, PA (US);
Thomas Kenneth Bednarz, Richmond, VA (US);
Allan Cairncross, Hockessin, DE (US);
John Edwin Gantzhorn, Jr., Hockessin, DE (US);
George Yeaman Thomson, Jr., Oxford, PA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
Methods and associated apparatus are disclosed for use in mounting particles on and de-mounting particles from a substrate having an array of tacky and non-tacky areas. The particles can be either electrically conducting or electrically non-conducting. Selection of electrically conducting particles is preferred. The substrate having an array of tacky and non-tacky areas can either be electrically non-conducting (e.g., a dielectric substrate) or electrically-conducting. The methods involve use of first and second electrode plates with the substrate therebetween, the plates having applied thereto a direct current potential, which potential in preferred embodiments is reversed in polarity for a number N of cycles. Methods and articles are disclosed using an electrically conductive surface adjacent the tacky and non-tacky areas to minimize static buildup on the particles and tacky and non-tacky areas.