US Patent 7900855 - Method for producing fullerene

http://www.freepatentsonline.com/7900855.html

This patent is from a company called ABsize Inc. and teaches a method to improve the dispersion stability of C60 without chemical compounds. Claim 1 reads:

1. A method for producing fullerene suspension comprising:

irradiating fullerene particles in water with pulse laser to crush the fullerene particles into the nanoparticles,

wherein the pulse laser is irradiated at excitation light intensity of 30 to 50 mJ/cm2.