Patents by Inventor Stephen L. Christian

Stephen L. Christian 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).

  • Synthesis of aminonitrobenzodifuroxan
    Patent number: 5149818
    Abstract: Aminonitrobenzodifuroxan (CL-18) is prepared by directly converting pentanitroaniline to aminonitrobenzodifuroxan with heat in the presence of an excess of sodium azide. The pentanitroaniline is prepared in high yield from 3,5-dinitroaniline with a mixture of nitric acid and sulfuric acid in which the final sulfuric acid concentration is from 99.0 to 99.5%.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: September 22, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stephen L. Christian, Andrew P. Chafin, Arnold T. Nielsen, Ronald L. Atkins, William P. Norris, Richard A. Hollins