Patents by Inventor Edward L. Roemer

Edward L. Roemer 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).

  • Spherical nitroguanidine process
    Patent number: 4967000
    Abstract: A process of preparing spherical high bulk density nitroguanidine by dissing low bulk density nitroguanidine in N-methyl pyrrolidone at elevated temperatures and then cooling the solution to lower temperatures as a liquid characterized as a nonsolvent for the nitroguanidine is provided. The process is enhanced by inclusion in the solution of from about 1 ppm up to about 250 ppm of a metal salt such as nickel nitrate, zinc nitrate or chromium nitrate, preferably from about 20 to about 50 ppm.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: October 30, 1990
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: John A. Sanchez, Edward L. Roemer, Lawrence A. Stretz