Patents by Inventor James A. Trainham

James A. Trainham 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).

  • Phosphorous pentoxide producing methods and systems with increased agglomerate compression strength
    Patent number: 9783419
    Abstract: A phosphorous pentoxide producing method includes forming pre-feed agglomerates containing phosphate ore particles, carbonaceous material particles, and silica particles and heating the pre-feed agglomerates in a reducing or inert atmosphere to an induration temperature from above 900 C to less than 1180 C and maintaining the induration temperature for 15 minutes or more. The method includes forming feed agglomerates and increasing a compression strength of the feed agglomerates to above 25 lbf using the heating, the feed agglomerates exhibiting a calcium-to-silica mole ratio less than 1 and a silica-to-(calcium+magnesium) mole ratio greater than 2. A reducing kiln bed is formed using the feed agglomerates, kiln off-gas is generated, and phosphorous pentoxide is collected from the kiln off gas.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 10, 2017
    Assignee: JDCPhosphate, Inc.
    Inventors: David B. Blake, Joseph A. Megy, Sourabh A. Pachpor, Lawrence M. Handman, Theodore P. Fowler, James A. Trainham, Mark Vignovic
  • Phosphorous Pentoxide Producing Methods and Systems with Increased Agglomerate Compression Strength
    Publication number: 20160090305
    Abstract: A phosphorous pentoxide producing method includes forming pre-feed agglomerates containing phosphate ore particles, carbonaceous material particles, and silica particles and heating the pre-feed agglomerates in a reducing or inert atmosphere to an induration temperature from above 900 C to less than 1180 C and maintaining the induration temperature for 15 minutes or more. The method includes forming feed agglomerates and increasing a compression strength of the feed agglomerates to above 25 lbf using the heating, the feed agglomerates exhibiting a calcium-to-silica mole ratio less than 1 and a silica-to-(calcium+magnesium) mole ratio greater than 2. A reducing kiln bed is formed using the feed agglomerates, kiln off-gas is generated, and phosphorous pentoxide is collected from the kiln off gas.
    Type: Application
    Filed: September 24, 2015
    Publication date: March 31, 2016
    Inventors: David B. BLAKE, Joseph A. MEGY, Sourabh A. PACHPOR, Lawrence M. HANDMAN, Theodore P. FOWLER, James A. TRAINHAM, Mark VIGNOVIC
  • Multistep synthesis of hexafluoropropylene
    Patent number: 5068472
    Abstract: The present invention relates to multistep syntheses of hexafluoropropylene from hexachloropropylene. In all these syntheses the first step is a fluorination of the starting material; later steps convert the initial products to CF.sub.3 --CFCl--CF.sub.3, which is dehalogenated to the desired product.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: November 26, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James L. Webster, Swiatoslaw Trofimenko, Paul R. Resnick, Douglas W. Bruhnke, Jan J. Lerou, William H. Manogue, Leo E. Manzer, Elrey L. McCann, Steven H. Swearingen, James A. Trainham, Cristobal Bonifaz