Patents by Inventor Albert N. De Vault

Albert N. De Vault 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).

  • Ashless detergent additives for fuels and lubricants
    Patent number: 4059535
    Abstract: A long chain monocarboxylic acid is reacted with a multi-amine to produce an amide and the amide is then treated with sulfonic acid to produce a sulfonate to provide compounds which are suitable as ashless detergent additives and the method for producing these compounds are provided. In a preferred embodiment the detergent additives are combined with hydrocarbons suitable as fuel in an internal combustion engine and with oil formulations to provide ashless fuel detergent compositions and lubricant detergent compositions.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: November 22, 1977
    Assignee: Phillips Petroleum Company
    Inventors: Albert N. De Vault, Hans D. Holtz