Patents by Inventor Dennis M. Johns

Dennis M. Johns 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).

  • Continuous process for removing water-soluble particles from organic liquids
    Patent number: 4645512
    Abstract: A process for the removal of water-soluble particles from a heavier-than-water organic liquid which easily emulsifies with water, comprising conducting a countercurrent extraction with water in a vertical extraction zone wherein an organic phase is maintained as a continuous phase and the water migrates upwardly through the organic liquid as a disperse phase.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: February 24, 1987
    Assignee: The Dow Chemical Company
    Inventor: Dennis M. Johns