Electric heating – Metal heating – Cutting or disintegrating
Reexamination Certificate
2007-03-21
2010-10-19
Evans, Geoffrey S (Department: 3742)
Electric heating
Metal heating
Cutting or disintegrating
C204S173000, C219S069110, C977S844000
Reexamination Certificate
active
07816619
ABSTRACT:
A process for manufacturing carbon nanotubes, including a step of creating an electric arc in an electric field between a carbonaceous anode and a carbonaceous cathode under conditions effective to produce the carbon nanotubes, wherein the carbonaceous anode and the carbonaceous cathode are immersed in dielectric liquid serving as a dielectric, coolant and for providing an oxygen-free environment. Preferably, one of the electric discharge machining dielectric oils is used as dielectric liquid. Preferably, an electric discharge machine is used to immerse the electrodes in the dielectric liquid, create an electric field, induce the arc, and adjust the gap between the electrodes thus optimizing the yield of carbon nanotubes. The process is cost-effective, easy to implement, and provides high-quality carbon nanotubes while eliminating the need for dedicated equipment and catalysts.
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Evans Geoffrey S
Jaksic Nebojsa
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