Patents by Inventor Charles Cross Wear

Charles Cross Wear 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).

  • Hydrothermally stable high pore volume aluminum oxide/swellable clay composites and methods of their preparation and use
    Patent number: 6451200
    Abstract: Porous composite particles are provided which comprise an aluminum oxide component, e.g., crystalline boehmite, and a swellable clay component, e.g., synthetic hectorite, intimately dispersed within the aluminum oxide component at an amount effective to increase the hydrothermal stability, pore volume, and/or the mesopore pore mode of the composite particles relative to the absence of the swellable clay. Also provided is a method for making the composite particles, agglomerate particles derived therefrom, and a process for hydroprocessing petroleum feedstock using the agglomerates to support a hydroprocessing catalyst.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: September 17, 2002
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Roger Jean Lussier, Stanislaw Plecha, Charles Cross Wear, Gordon Dean Weatherbee
  • Hydrothermally stable high pore volume aluminum oxide/swellable clay composites and methods of their preparation and use
    Publication number: 20020051878
    Abstract: Porous composite particles are provided which comprise an aluminum oxide component. e.g., crystalline boehmite, and a swellable clay component, e.g., synthetic hectorite, intimately dispersed within the aluminum oxide component at an amount effective to increase the hydrothermal stability, pore volume, and/or the mesopore pore mode of the composite particles relative to the absence of the swellable clay. Also provided is a method for making the composite particles, agglomerate particles derived therefrom, and a process for hydroprocessing petroleum feedstock using the agglomerates to support a hydroprocessing catalyst.
    Type: Application
    Filed: July 16, 2001
    Publication date: May 2, 2002
    Inventors: Roger Jean Lussier, Stanislaw Plecha, Charles Cross Wear, Gordon Dean Weatherbee
  • Hydrothermally stable high pore volume aluminum oxide/swellable clay composites and methods of their preparation and use
    Patent number: 6303531
    Abstract: Porous composite particles are provided which comprise an aluminum oxide component, e.g., crystalline boehmite, and a swellable clay component, e.g., synthetic hectorite, intimately dispersed within the aluminum oxide component at an amount effective to increase the hydrothermal stability, pore volume, and/or the mesopore pore mode of the composite particles relative to the absence of the swellable clay. Also provided is a method for making the composite particles, agglomerate particles derived therefrom, and a process for hydroprocessing petroleum feedstock using the agglomerates to support a hydroprocessing catalyst.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: October 16, 2001
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Roger Jean Lussier, Stanislaw Plecha, Charles Cross Wear