Patents by Inventor Ronald L. Longwell

Ronald L. Longwell 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).

  • Separation of emulsions with electric field
    Patent number: 4308127
    Abstract: A plurality of electrostatic fields is arranged to progressively separate the liquids from their emulsions having a low dielectric strength. The emulsions are first passed through one of the electrostatic fields between insulated electrodes. With the breaking of the emulsion begun by the first electrostatic field, the emulsion is next flowed in an electrostatic field between uninsulated electrodes. The final stage is the passing of the almost completely broken emulsion through an electrostatic field between electrodes which are arranged to systematically degrade their field.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: December 29, 1981
    Assignee: Combustion Engineering, Inc.
    Inventors: Floyd L. Prestridge, Ronald L. Longwell