Patents by Inventor James A. Poston

James A. Poston 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).

  • Reduction of spalling in mixed metal oxide desulfurization sorbents by addition of a large promoter metal oxide
    Patent number: 5693588
    Abstract: Mixed metal oxide pellets for removing hydrogen sulfide from fuel gas mixes derived from coal are stabilized for operation over repeated cycles of desulfurization and regeneration reactions by addition of a large promoter metal oxide such as lanthanum trioxide. The pellets, which may be principally made up of a mixed metal oxide such as zinc titanate, exhibit physical stability and lack of spalling or decrepitation over repeated cycles without loss of reactivity. The lanthanum oxide is mixed with pellet-forming components in an amount of 1 to 10 weight percent.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: December 2, 1997
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: James A. Poston
  • Capsule
    Patent number: D430932
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: September 12, 2000
    Assignee: Warner-Lambert Company
    Inventors: Phillip Vickery, Walter V. Corley, Bruce DeMars, James Poston