Patents by Inventor Henry H. Ashjian

Henry H. Ashjian 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).

  • Reaction products of alkenyl succinimides with ethylenediamine carboxy acids as fuel detergents
    Patent number: 4971598
    Abstract: An additive for fuel compositions. The additive comprises the reaction product of an alkenyl succinimide selected from the group consisting of mono-succinimides, bis-succinimides, and mixtures thereof, with iminodiacetic acid or an ethylenediamine carboxy acid. The reaction product finds particular utility as a fuel detergent.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: November 20, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Harry J. Andress, Henry H. Ashjian, Frederick J. Hills