Patents by Inventor Donald O. Hitzman

Donald O. Hitzman 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).

  • Microbial viscosifiers
    Patent number: 4096073
    Abstract: A method of producing microbial viscosifiers, for use in waterfloods, for instance, which involves mixing fermentation suspensions comprising Gram-negative cells with a base to raise the pH of the resulting solution above 7.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: June 20, 1978
    Assignee: Phillips Petroleum Company
    Inventor: Donald O. Hitzman
  • Integrated fermentation-photosynthesis biomass process
    Patent number: 4044500
    Abstract: An integrated process in which aerobic fermentation and photosynthesis are combined. In a first step, fermentation is conducted to produce cells which are recovered. The effluent from the fermentation is used for cultivation of algae with the carbon dioxide produced in the fermentation step being circulated to the algae production step.
    Type: Grant
    Filed: January 9, 1974
    Date of Patent: August 30, 1977
    Assignee: Phillips Petroleum Company
    Inventor: Donald O. Hitzman
  • Methanol foam fermentation to single cell protein by microorganisms
    Patent number: 3982998
    Abstract: A process for the production of microbial cells by fermenting a carbonaceous material in a foam fermenter containing an oxygen-enriched nutrient medium. The process uses a source of carbon which is assimilable by the microorganism for the production of the microbial cells. The microbial cells are separated and removed from the foam fermenter for use as a food product high in protein content.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: September 28, 1976
    Assignee: Phillips Petroleum Company
    Inventors: Donald O. Hitzman, Eugene H. Wegner
  • Fermentation of oxygenated hydrocarbon compounds with thermophilic microorganisms
    Patent number: 3981774
    Abstract: Single cell protein (SCP) and other fermentation products are produced by aerobic fermentation processes at relatively high temperature conditions employing oxygenated hydrocarbon compounds, such as methanol, as carbon and energy source material, and employing certain unique species Bacillus NRRL B-8066 or NRRL B-8065 as microbial conversion agent, preferably in foam-filled fermentation means.
    Type: Grant
    Filed: September 30, 1975
    Date of Patent: September 21, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Donald O. Hitzman
  • Microbial production of dicarboxylic acids
    Patent number: 3975234
    Abstract: Dicarboxylic acids are produced by enzymatic fermentation of the respective hydrocarbon and/or a corresponding alcohol utilizing under nongrowth conditions the mutant strains of microorganism Torulopsis bombicola which has been grown on hydrocarbon-free media, namely, on carbohydrates, e.g., sugar.
    Type: Grant
    Filed: July 3, 1975
    Date of Patent: August 17, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Donald O. Hitzman
  • Microbial synthesis from aldehyde containing hydrocarbon derived products
    Patent number: 3965985
    Abstract: Proteins, amino acids, gums, and other valuable fermentation products are efficiently biosynthesized from hydrocarbon derived feedstocks containing aldehydes which have been admixed with a nitrogen-containing compound before being passed to a fermentor.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: June 29, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Donald O. Hitzman
  • Recovery of cellular protein products from microbiological synthesis masses
    Patent number: 3958038
    Abstract: Cellular protein products are recovered from microbiologically produced masses by incorporation therewith of a protein suitable as a food which acts as a flocculant.
    Type: Grant
    Filed: November 26, 1973
    Date of Patent: May 18, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Donald O. Hitzman