Patents by Inventor Charles A. Peterson

Charles A. Peterson 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).

  • Dispersants and process for their preparation
    Patent number: 3980569
    Abstract: Compositions useful as lubricant and fuel dispersants are prepared by reacting a hydroxyaromatic compound containing an aliphatic or alicyclic substituent which has at least about 6 carbon atoms with an aldehyde in the presence of an alkaline reagent and at a temperature up to about 125.degree.C., substantially neutralizing the resulting intermediate at a temperature up to about 150.degree.C., and then reacting with a primary or secondary amino compound.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: September 14, 1976
    Assignee: The Lubrizol Corporation
    Inventors: John Francis Pindar, Jerome Martin Cohen, Charles Peterson Bryant