US Patent 7632422 - Cut nanotube heat transport medium

http://www.freepatentsonline.com/7632422.html

Thermal conductive fluids may be formed by adding metallic particles to a liquid. This patent from Honda Motor and GSI Creos teaches that using obliquely or axially cut carbon nanotubes as the particles can improve the thermal conduction of such fluids. Claim 1 reads:

1. A heat transport medium, comprising:

a base liquid;

carbon nanotubes; and

a dispersant, wherein said carbon nanotubes are selected from the group consisting of:

(i) a obliquely cut carbon nanotube having a oblique cut surface, said obliquely cut carbon nanotube having been obtained by cutting a cylindrical carbon nanotube obliquely and having surface functional groups formed on said oblique cut surface, and

(ii) a axially cut carbon nanotube having an axial cut surface, said axially cut carbon nanotube having been obtained by cutting a cylindrical carbon nanotube axially and having surface functional groups formed on said axial cut surface.