ESTER PREPARATION WITH AFTER-TREATMENT Application US-20130039872-A1 United States of America 14 Feb 2013
METHOD FOR PREPARING METAL-FREE NITROGEN-CONTAINING CARBON NANOTUBES Application WO-2013005187-A1 World Intellectual Property Organisation (WIPO) 10 Jan 2013
Method for preparing metal-free nitrogen-containing carbon nanotubes Application EP-2543631-A1 European Patent Office 09 Jan 2013