Patents by Inventor Michael David Wallace

Michael David Wallace 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).

  • Alumina trihydrate derived high pore volume, high surface area aluminum oxide composites and methods of their preparation and use
    Patent number: 6403526
    Abstract: Porous composite particles are provided which comprise an aluminum oxide component, e.g., crystalline boehmite having a crystallite size of from about 20 to about 200 Angstroms and additive component residue, e.g., silicate, phosphate, of a crystal size growth inhibitor, intimately dispersed within the aluminum oxide component. The aluminum oxide component of the composite particles are derived from a mixture of alumina trihydrate (e.g., gibbsite) and an alumina seed component, i.e., active alumina, which are both converted to crystalline boehmite in the presence of the additive component. Also provided is a method for making the composite particles, agglomerate particles derived therefrom, and a process for hydroprocessing petroleum feedstock using the agglomerates.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: June 11, 2002
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Roger Jean Lussier, Michael David Wallace