| Patent Number |
Title Of Patent |
Date Issued |
| 7413723 |
Methods of oxidizing multiwalled carbon nanotubes |
August 19, 2008 |
| Methods of oxidizing multiwalled carbon nanotubes are provided. The multiwalled carbon nanotubes are oxidized by contacting the carbon nanotubes with gas-phase oxidizing agents such as CO.sub.2, O.sub.2, steam, N.sub.2O, NO, NO.sub.2, O.sub.3, and ClO.sub.2. Near critical and supercr |
| 7198772 |
Methods and catalysts for the manufacture of carbon fibrils |
April 3, 2007 |
| An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties a |
| 7144564 |
Process for producing single wall nanotubes using unsupported metal catalysts and single wall na |
December 5, 2006 |
| A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, |
| 7097821 |
Process for producing single wall nanotubes using unsupported metal catalysts and single wall na |
August 29, 2006 |
| A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, |
| 7074379 |
Process for producing single wall nanotubes using unsupported metal catalysts and single wall na |
July 11, 2006 |
| A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, |
| 7070753 |
Modification of nanotubes oxidation with peroxygen compounds |
July 4, 2006 |
| A method of chemically modifying carbon nanotubes having a diameter less than one micron comprising: contacting the nanotubes with a peroxygen compound selected from the group consisting of organic peroxyacids, inorganic peroxoacids and organic hydroperoxides, or a salt thereof, unde |
| 6872681 |
Modification of nanotubes oxidation with peroxygen compounds |
March 29, 2005 |
| A method of chemically modifying carbon nanotubes having a diameter less than one micron comprising: contacting the nanotubes with a peroxygen compound selected from the group consisting of organic peroxyacids, inorganic peroxoacids and organic hydroperoxides, or a salt thereof, under |
| 6827919 |
Process for producing single wall nanotubes using unsupported metal catalysts and single wall na |
December 7, 2004 |
| A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, O, |
| 6770589 |
Methods and catalysts for the manufacture of carbon fibrils |
August 3, 2004 |
| An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and a |
| 6699454 |
Catalysts for the manufacture of carbon fibrils and methods of use thereof |
March 2, 2004 |
| A method for the manufacture of a catalyst for the production of carbon fibrils comprising contacting a fibril-forming catalyst or precursors of a fibril-forming catalyst with an effective amount of a surfactant and/or polyol.A catalyst for the production of carbon fibrils formed by cont |
| 6696387 |
Catalysts for the manufacture of carbon fibrils and methods of use thereof |
February 24, 2004 |
| A catalyst for the production of carbon fibrils and a method for the manufacture of such a catalyst comprising contacting a fibril-forming catalyst or precursors of a fibril-forming catalyst with an effective amount of a surfactant and/or polyol. The improved carbon fibrils or carbon |
| 6358878 |
Carbon fibril-forming metal catalysts |
March 19, 2002 |
| A fibril aggregate that includes a multiplicity of carbon fibrils whose longitudinal axes have substantially the same relative orientation, each of the fibrils characterized as having graphitic layers that are substantially parallel to its longitudinal axis and being free of a contin |
| 6294144 |
Methods and catalysts for the manufacture of carbon fibrils |
September 25, 2001 |
| An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and a |
| 6221330 |
Process for producing single wall nanotubes using unsupported metal catalysts |
April 24, 2001 |
| A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, O, |
| 6143689 |
Methods and catalysts for the manufacture of carbon fibrils |
November 7, 2000 |
| An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and a |
| 5726116 |
Fibril aggregates and method for making same |
March 10, 1998 |
| A fibril aggregate that includes a multiplicity of carbon fibrils whose longitudinal axes have substantially the same relative orientation, each of the fibrils characterized as having graphitic layers that are substantially parallel to its longitudinal axis and being free of a contin |
| 5456897 |
Fibril aggregates and method for making same |
October 10, 1995 |
| A fibril aggregate that includes a multiplicity of carbon fibrils whose longitudinal axes have substantially the same relative orientation, each of the fibrils characterized as having graphitic layers that are substantially parallel to its longitudinal axis and being free of a contin |
