Patents by Inventor Gerald Earl

Gerald Earl 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).

  • Fluid catalytic cracking process and apparatus
    Patent number: 5766558
    Abstract: The present invention provides an apparatus for improving the contacting of feedstock and regenerated catalytic particulates in certain fluid catalytic cracking processes and apparatus.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: June 16, 1998
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Warren S. Letzsch, Gerald Earl
  • Fluid catalytic cracking process and apparatus
    Patent number: 5723040
    Abstract: The present invention provides a method for improving the contacting of feedstock and regenerated catalytic particulates in certain fluid catalytic cracking processes and apparatus.
    Type: Grant
    Filed: November 2, 1994
    Date of Patent: March 3, 1998
    Assignee: Stone & Webster Engineering Corporation
    Inventors: Warren S. Letzsch, Gerald Earl
  • Short residence time cracking apparatus and process
    Patent number: 5662868
    Abstract: A novel apparatus and process for the cracking of hydrocarbons is disclosed which is particularly useful in revamping an existing FCC unit to a short residence time FCC unit.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: September 2, 1997
    Assignee: Stone & Webster Engineering Corporation
    Inventors: Warren S. Letzsch, Gerald Earl