Patents by Inventor Charles R. Dickey

Charles R. Dickey 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).

  • Patent number: 4192758
    Abstract: An improvement in the method of preparing high alkali value overbased magnesium sulfonate lubricant additives from commmercially available grades of magnesium oxide is disclosed.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: March 11, 1980
    Assignee: Bray Oil Company, Inc.
    Inventors: Charles R. Dickey, Paul M. Williamson
  • Patent number: 4065396
    Abstract: It has been discovered that, whereas magnesium oxide of commerce, usually made by roasting hydrated magnesia, is inert to the action of CO.sub.2 and methanol, when the oxide is made by roasting magnesium carbonate at a critical temperature in the range of F., it dissolves rapidly in anhydrous methanol under CO.sub.2 pressure, to form a methylate-carbonate. The complex can be emulsified with lubricating oil in the presence of an oil soluble surface active agent, particularly magnesium mahogany sulfonate, to produce an additive for lubricating oil having a high alkali value in the range of 100-400 mg. KOH per gram.
    Type: Grant
    Filed: November 30, 1973
    Date of Patent: December 27, 1977
    Assignee: Bray Oil Co.
    Inventors: Charles R. Dickey, Vanderveer Voorhees