| Patent Number |
Title Of Patent |
Date Issued |
| 5925465 |
Carbon material originating from graphite and method of producing same |
July 20, 1999 |
| A novel carbon material is obtained by bending at least one carbon atom layer of graphite in at least one selected region along either, or both, of lines I and II in FIG. 1. The bending can be accomplished by scanningly picking the carbon atom layer(s) with a probe of an atomic force |
| 5698175 |
Process for purifying, uncapping and chemically modifying carbon nanotubes |
December 16, 1997 |
| Disclosed is a process for purifying carbon nanotubes which has steps of 1) mixing carbon nanotubes which accompany carbon impurities with a reagent selected from a group consisting of oxidation agents, nitration agents and sulfonation agents in liquid phase, 2) reacting the carbon nanot |
| 5641466 |
Method of purifying carbon nanotubes |
June 24, 1997 |
| A mixture of carbon nanotubes and impurity carbon materials, which include carbon nanoparticles and may possibly include amorphous carbon, is purified into carbon nanotubes of high purity by utilizing a significant difference in oxidizability between the nanotubes and the nanoparticles. |
| 5626812 |
Method of producing carbon material by bending at least one carbon atom layer of graphite |
May 6, 1997 |
| A novel carbon material is obtained by bending at least one carbon atom layer of graphite in at least one selected region along either, or both, of lines I and II in FIG. 1. The bending can be accomplished by scanningly picking the carbon atom layer(s) with a probe of an atomic force |
| 5294600 |
Superconducting material comprising Rb.sub.x Cs.sub.y C.sub.60. |
March 15, 1994 |
| A superconducting material higher in superconducting transition temperature and superconducting volume ratio than any conventional one is provided, which comprises a fullerene doped with rubidium and cesium. This fullerene system superconducting material makes it possible to improve both |
