US 7,601,205 B2
Carbon nanotubes as low voltage field emission sources for particle precipitators
Toshiharu Furukawa, Essex Junction, Vt. (US); Mark C. Hakey, Fairfax, Vt. (US); Steven J. Holmes, Guilderland, N.Y. (US); David V. Horak, Essex Junction, Vt. (US); and Charles W. Koburger, III, Delmar, N.Y. (US)
Assigned to International Business Machines Corporation, Armonk, N.Y. (US)
Filed on May 22, 2008, as Appl. No. 12/125,442.
Application 12/125442 is a continuation of application No. 11/161220, filed on Jul. 27, 2005, granted, now 7,402,194.
Prior Publication US 2008/0257156 A1, Oct. 23, 2008
This patent is subject to a terminal disclaimer.
Int. Cl. B03C 3/60 (2006.01)
U.S. Cl. 96—69  [96/95; 96/97; 96/98; 977/742] 12 Claims
OG exemplary drawing
 
1. An electrostatic, airborne particulate precipitator comprising:
a housing unit;
a first conductive electrode located in said housing unit;
a second conductive electrode located in said housing unit at a distance from said first conductive electrode, said first and second conductive electrodes comprising poles of an electrostatic field; and
a carbon nanotube formed on said second conductive electrode, wherein said carbon nanotube comprises a shape sufficient to ionize gas in said housing unit.