Intellectual Property Law

US Patent 7479325 - Isotope doped carbon nanotube

Isotopic labeling is a method for tracking a sample during chemical processing. This patent from Tsinghua University teaches an isotope doped carbon nanotube useful for such labeling. Claim 1 reads:

1. An isotope-doped nanotube of an element, comprising:

an elongated tube structure including a first nanotube segment made of first isotopes of said element, and a second nanotube segment made of second isotopes of said element, the first and second nanotube segments selectively occurring along an axial direction of said elongated tube structure.

Full post as published by TinytechIP on January 21, 2009 (boomark / email).