Patents by Inventor Hans B. Jonassen

Hans B. Jonassen 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 decomposing iron pentacarbonyl
    Patent number: 4056386
    Abstract: A homogeneous gaseous catalyst such as H.sub.2, NO, PF.sub.3, PH.sub.3, NH.sub.3 or a halogen is used to speed the decomposition of gaseous iron pentacarbonyl into solid iron and gaseous carbon monoxide.
    Type: Grant
    Filed: April 19, 1977
    Date of Patent: November 1, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William S. McEwan, Hans B. Jonassen
  • Gossypol, an abundant, low-cost iron deactivator, pot-life extender, and processing aid for HTPB propellants
    Patent number: 3953260
    Abstract: In a method wherein propellant ingredients including a hydroxy terminated nder, an isocyanate curative therefor and transition metal compounds or traces thereof are mixed, worked into a suitable container and allowed to cure, gossypol is used to prolong the potlife of the propellant mix. Gossypol is dissolved in a portion of the hydroxy terminated binder material and the solution is utilized as a portion of the total binder. Final formulations containing from 0.02 to 0.1 weight percent gossypol are preferred although more gossypol may be used.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: April 27, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John D. Braun, M. Frank Pickett, Howard W. Gerrish, Jr., Hans B. Jonassen