Patents by Inventor Edward L. Little

Edward L. Little 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).

  • Method for eliminating color forming impurities from nitro compounds
    Patent number: 8207382
    Abstract: A method for stabilizing nitro compounds against discoloration. The method comprises reacting nitro compounds containing color-forming impurities with nitric acid, neutralizing and washing the product, and distilling therefrom purified nitro compounds.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: June 26, 2012
    Inventors: Daniel M. Trauth, Edward L. Little, Richard L. James, John D. Gummere, Morteza Mokhtarzadeh, Li Wang
  • METHOD FOR ELIMINATING COLOR FORMING IMPURITIES FROM NITRO COMPOUNDS
    Publication number: 20110105806
    Abstract: A method for stabilizing nitro compounds against discoloration. The method comprises reacting nitro compounds containing color-forming impurities with nitric acid, neutralizing and washing the product, and distilling therefrom purified nitro compounds.
    Type: Application
    Filed: April 8, 2009
    Publication date: May 5, 2011
    Inventors: Daniel M. Trauth, Edward L. Little, Richard L. James, John D. Gummere, Morteza Mokhtarzadeh, Li Wang