Patents by Inventor Duane A. Lerdal

Duane A. Lerdal 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).

  • Bis-(3,3-dinitrobutyl)-polysiloxane
    Patent number: 4221736
    Abstract: A method for producing an explosive ingredient bis-(3,3-dinitrobutyl)-polloxane is described.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: September 9, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kurt Baum, Duane A. Lerdal
  • Dinitroalkyl and fluorodinitroalkyl silicon compounds
    Patent number: 4139403
    Abstract: Energetic silicon compounds of the general formulae ##STR1## The gem dinitro compounds are prepared from alkyl bromide silanes by sod nitrite displacement and oxidative nitration. The compounds are then fluorinated. To prepare the polysiloxanes, phenyl blocking groups are used during synthesis of the fluoro dinitro moiety and are then replaced with bromine and the monomer is hydrolyzed.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: February 13, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kurt Baum, Duane A. Lerdal, Jerald S. Horn