Patents by Inventor W. Kittrell

W. Kittrell 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).

  • Publication number: 20070009421
    Abstract: The present invention is directed to fibers of epitaxially grown single-wall carbon nanotubes (SWNTs) and methods of making same. Such methods generally comprise the steps of: (a) providing a spun SWNT fiber; (b) cutting the fiber substantially perpendicular to the fiber axis to yield a cut fiber; (c) etching the cut fiber at its end with a plasma to yield an etched cut fiber; (d) depositing metal catalyst on the etched cut fiber end to form a continuous SWNT fiber precursor; and (e) introducing feedstock gases under SWNT growth conditions to grow the continuous SWNT fiber precursor into a continuous SWNT fiber.
    Type: Application
    Filed: December 1, 2005
    Publication date: January 11, 2007
    Applicant: William Marsh Rice University
    Inventors: W. Kittrell, Yuhuang Wang, Myung Kim, Robert Hauge, Richard Smalley, Irene Marek
  • Publication number: 20060231399
    Abstract: The invention relates to a process for sorting and separating a mixture of (n, m) type single-wall carbon nanotubes according to (n, m) type. A mixture of (n, m) type single-wall carbon nanotubes is suspended such that the single-wall carbon nanotubes are individually dispersed. The nanotube suspension can be done in a surfactant-water solution and the surfactant surrounding the nanotubes keeps the nanotube isolated and from aggregating with other nanotubes. The nanotube suspension is acidified to protonate a fraction of the nanotubes. An electric field is applied and the protonated nanotubes migrate in the electric fields at different rates dependent on their (n, m) type. Fractions of nanotubes are collected at different fractionation times. The process of protonation, applying an electric field, and fractionation is repeated at increasingly higher pH to separated the (n, m) nanotube mixture into individual (n, m) nanotube fractions.
    Type: Application
    Filed: June 19, 2006
    Publication date: October 19, 2006
    Applicant: William Marsh Rice University
    Inventors: Richard Smalley, Robert Hauge, W. Kittrell, Ramesh Sivarajan, Michael Strano, Sergei Bachilo, R. Weisman
  • Patent number: 4009819
    Abstract: A disposable paper basket formed of a folded sheet of shaped paper which may be employed for retention and removal of discarded packaging material and other debris from a dining table. The basket is formed of a flat sheet of paper from which a triangular section has been cut adjacent each corner of the sheet, and folded along pre-formed crease lines to form a container, open at the top, with the folded sections held in the erect position by clasp fasteners or folded sections of paper through holes in the sheet.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: March 1, 1977
    Assignee: The Raymond Lee Organization, Inc.
    Inventors: Hallie E. Miller, Nancy W. Kittrell