Patents by Inventor Julie Chabot

Julie Chabot 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).

  • Extension of catalyst cycle length in residuum desulfurization processes
    Publication number: 20030085155
    Abstract: Solvent injection in amounts no greater than 2 wt % can favorably alter the way heavy metals, such as vanadium, are normally deposited in catalyst particles. Heavy metals may be stored on the catalyst in a more compact form, saving catalyst pore volume. Consequently catalyst cycle length is improved, since capacity for deposition is increased.
    Type: Application
    Filed: December 3, 2002
    Publication date: May 8, 2003
    Inventor: Julie Chabot
  • Upflow reactor system with layered catalyst bed for hydrotreating heavy feedstocks
    Patent number: 6554994
    Abstract: A reactor system and process for hydrotreating a heavy feedstock contaminated with metals sulfur and carbon residue using an upflow fixed bed reactor with at least two catalyst layers having different hydrogenation activity.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: April 29, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: Bruce E. Reynolds, Fred W. Lam, Julie Chabot, Fernando J. Antezana, Robert Bachtel, Kirk R. Gibson, Richard Threlkel, Pak C. Leung
  • Extension of catalyst cycle length in residuum desulfurization processes
    Publication number: 20020056664
    Abstract: Solvent injection in amounts no greater than 2 wt % can favorably alter the way heavy metals, such as vanadium, are normally deposited in catalyst particles. Heavy metals may be stored on the catalyst in a more compact form, saving catalyst pore volume. Consequently catalyst cycle length is improved, since capacity for deposition is increased.
    Type: Application
    Filed: June 5, 2001
    Publication date: May 16, 2002
    Inventor: Julie Chabot
  • Balanced flow resistance OCR distributor cone
    Patent number: 6387334
    Abstract: The invention comprises an OCR catalyst reactor which includes passive spheres and catalyst particles having substantially the same size and separated on opposite sides of a distributor cone by a screen. The use of passive spheres of substantially the same size to the catalyst particles provides for a more uniform distribution of the gas liquid reactants charged into the reactor vessel. The screen is configured such that it provides a separation of the catalyst and the passive spheres while being sized to prevent plugging.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: May 14, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: William B. Krantz, David E. Earls, Harold J. Trimble, Julie Chabot, Krishniah Parimi