Patents by Inventor Ernest L. Grebe

Ernest L. Grebe 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).

  • Spacer fluid
    Patent number: 4717488
    Abstract: A spacer fluid for use in oil well drilling applications is disclosed. The fluid is prepared from a slurry comprising 25-60% heteropolysaccharide S-130, 0.5-6% organophilic clay, 30-70% solvent, up to 10% surfactant, and up to 6% methanol or isopropanol.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: January 5, 1988
    Assignee: Merck Co., Inc.
    Inventors: James M. Seheult, Ernest L. Grebe