Patents by Inventor Ramond F. DePaula

Ramond F. DePaula has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation of array of long carbon nanotubes and fibers therefrom
    Patent number: 9181098
    Abstract: An array of carbon nanotubes is prepared by exposing a catalyst structure to a carbon nanotube precursor. Embodiment catalyst structures include one or more trenches, channels, or a combination of trenches and channels. A system for preparing the array includes a heated surface for heating the catalyst structure and a cooling portion that cools gas above the catalyst structure. The system heats the catalyst structure so that the interaction between the precursor and the catalyst structure results in the formation of an array of carbon nanotubes on the catalyst structure, and cools the gas near the catalyst structure and also cools any carbon nanotubes that form on the catalyst structure to prevent or at least minimize the formation of amorphous carbon. Arrays thus formed may be used for spinning fibers of carbon nanotubes.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: November 10, 2015
    Assignee: Los Alamos National Security, LLC
    Inventors: Paul N. Arendt, Ramond F. DePaula, Yuntian T. Zhu, Igor O. Usov
  • Preparation of array of long carbon nanotubes and fibers therefrom
    Publication number: 20080181839
    Abstract: An array of carbon nanotubes is prepared by exposing a catalyst structure to a carbon nanotube precursor. Embodiment catalyst structures include one or more trenches, channels, or a combination of trenches and channels. A system for preparing the array includes a heated surface for heating the catalyst structure and a cooling portion that cools gas above the catalyst structure. The system heats the catalyst structure so that the interaction between the precursor and the catalyst structure results in the formation of an array of carbon nanotubes on the catalyst structure, and cools the gas near the catalyst structure and also cools any carbon nanotubes that form on the catalyst structure to prevent or at least minimize the formation of amorphous carbon. Arrays thus formed may be used for spinning fibers of carbon nanotubes.
    Type: Application
    Filed: December 13, 2007
    Publication date: July 31, 2008
    Inventors: Paul N. Arendt, Ramond F. DePaula, Yuntian T. Zhu, Igor O. Usov