Patents by Inventor David M. Kazell

David M. Kazell 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).

  • Reaction and regeneration system
    Patent number: 6884400
    Abstract: A reactor and regeneration for effecting radial flow contact of a reactant stream with catalyst particles movable as an annular-form bed by gravity flow and for reducing stresses in the bed is disclosed.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: April 26, 2005
    Assignee: UOP LLC
    Inventors: Kyle P. Austin, James A. Szczurek, Larry D. Richardson, David M. Kazell, Charles T. Ressl, Michael J. Vetter, Gary A. Dziabis, Paul R. Cottrell, Mary Jo Wier
  • Method for changing particulate transport rates between zones
    Patent number: 5500110
    Abstract: A controlled method of changing the transport rate of particles between two zones is disclosed. Changes are made in a computed value of the pressure difference of the conduit between the two zones through which the particles are transported. The changes are of a predetermined magnitude and are performed at predetermined time intervals, until the desired final value of the pressure difference is reached. The method minimizes fluctuations in the pressures of the two zones without over-sized vessels or additional equipment that would otherwise be needed to accommodate pressure changes. This results in a savings in construction costs. This invention is adaptable to a multitude of processes for the catalytic conversion of hydrocarbons in which deactivated catalyst particles are regenerated.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: March 19, 1996
    Assignee: UOP
    Inventors: Paul A. Sechrist, Roger R. Lawrence, Frank T. Micklich, Larry D. Richardson, David M. Kazell