International patenting activity in the field of carbon nanotubes

Patenting activity in this sub-field of nanotechnology registered a spurt during the last 12 years--implying a breakthrough bringing about a technological paradigm shift in the field of fullerene since carbon nanotubes are fullerene-related structures. CNT is, thus, one of the key technologies likely to revolutionize information technology, materials and medicine and the present study aim to examine technological developments in this field based on international patenting activity during the period of 1991-2003.