US Patent 8184930 - Titania nanotube

http://www.freepatentsonline.com/8184930.html

Titanium dioxide is a useful material for photocatalysts, solar cells, and memory resistors. This patent from Sumitomo Chemical Company includes some broad claims to TiO2 nanotubes having a long length. Claim 1 reads:

1. A titania nanotube having a length of 10 μm or more.