Patents by Inventor Jerry A. Peik

Jerry A. Peik 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).

  • Heteropolysaccharide S-657
    Patent number: 5175278
    Abstract: The new heteropolysaccharide S-657, prepared by fermentation of a new strain of Xanthomonas campestris, ATCC 53159, has valuable properties as a thickening, suspending and stabilizing agent in aqueous solutions and is especially valuable for use in well treating fluids.Heteropolysaccharide S-657 is composed principally of carbohydrate, about 12% protein and about 7% (calculated as O-acetyl) acyl groups, the carbohydrate portion containing about 19% glucuronic acid, and the neutral sugars rhamnose and glucose in the approximate molar ratio of 2:1.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: December 29, 1992
    Assignee: Merck & Co., Inc.
    Inventors: Jerry A. Peik, Suzanna M. Steenbergen, George T. Veeder
  • Heteropolysaccharide S-184
    Patent number: 5166335
    Abstract: A novel heteropolysaccharide S-184 is disclosed. The compound is a gum produced under suitable conditions by the novel microorganism Alcaligenes sp. This new heteropolysaccharide is composed primarily of carbohydrate as uronic acid (7% to 16%) and mannose, glucose, and galactose in the molar ratio of 1:3:5. The non-carbohydrate portion contains 12-16% protein and 3-4.5% acyl groups. The compound is used to alter viscosity and rheology of aqueous solutions.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: November 24, 1992
    Assignee: Merck & Co., Inc.
    Inventors: Jerry A. Peik, Suzanna M. Steenbergen, George T. Veeder
  • Heteropolysaccharide S-198
    Patent number: 4529797
    Abstract: A novel polysaccharide S-198 is disclosed composed of principally carbohydrate, 9-12% protein, and 2-4% O-acyl groups (calculated as O-acetyl). The carbohydrate portion comprises about 13-18% glucuronic acid and the neutral sugars mannose, glucose, and rhamnose in the approximate molar ratio 1:2:2. This polysaccharide is produced by a new Alcaligenes species ATCC 31853, in a suitable fermentation medium.
    Type: Grant
    Filed: March 8, 1984
    Date of Patent: July 16, 1985
    Assignee: Merck & Co., Inc.
    Inventors: Jerry A. Peik, Suzanna M. Steenbergen, Harold R. Hayden
  • Heteropolysaccharide S-139
    Patent number: 4454316
    Abstract: The new heteropolysaccharide S-139, prepared by fermentation of an unnamed Psuedomonas species, ATCC 31644 has valuable properties as a thickening, suspending and stabilizing agent in aqueous systems.Polysaccharide S-139 is principally composed of carbohydrate, protein (about 17%), and acyl groups (about 5% calculated as O-acetyl) as the glycosidically linked ester. The carbohydrate portion contains about 14% uronic acid (based on wt. gum) and the neutral sugars rhamnose, mannose, glucose, and galactose in the approximate molar ratio of 2.5:1:1.5:1 respectively.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: June 12, 1984
    Assignee: Merck & Co., Inc.
    Inventors: George T. Veeder, Jerry A. Peik
  • Heteropolysaccharide S-194
    Patent number: 4401760
    Abstract: A novel polysaccharide S-194 is disclosed composed of principally carbohydrate, about 14% protein, and 9-11% O-acetyl groups. The carbohydrate portion comprises about 8.8-9.2% glucuronic acid and the neutral sugars glucose and rhamnose in the approximate molar ratio 4:1. This polysaccharide is produced by a new Alcaligenes species ATCC 31961, in a suitable fermentation medium.
    Type: Grant
    Filed: October 21, 1981
    Date of Patent: August 30, 1983
    Assignee: Merck & Co., Inc.
    Inventors: Jerry A. Peik, Suzanna M. Steenbergen, Harold R. Hayden