Patents Represented by Attorney Hensa J. Pfeiffer

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  • Use of certain compounds in livestock food as growth promotants for better feed utilization and improved carcass composition
    Patent number: 4959382
    Abstract: A method is described in which the feed utilization by livestock is improved by the incorporation in the feed or drinking water of the said livestock of certain compounds, with resultant increase in body weight, decrease in body fat and increase in body protein for the same food intake.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: September 25, 1990
    Assignee: Merck & Co., Inc.
    Inventor: Larry A. Muir
  • 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