Patents by Inventor Steven L. Donnellan

Steven L. Donnellan 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).

  • From carbon monoxide and hydrogen anaerobic fermentation processing using a pre-reactor/deep tank reactor system
    Patent number: 8980597
    Abstract: Processes are disclosed for the low energy, anaerobic bioconversion of hydrogen and carbon monoxide in a gaseous substrate stream to oxygenated organic compounds such as ethanol by contact with microorganisms in a fermentation system with high conversion efficiency of both hydrogen and carbon monoxide. The processes of this invention use a pre-reactor and a deep, tank reactor in gaseous substrate flow sequence to obtain high conversion of gas substrate without undue risk of carbon monoxide inhibition.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: March 17, 2015
    Assignee: Coskata, Inc.
    Inventors: Robert Hickey, Steven L. Donnellan
  • FROM CARBON MONOXIDE AND HYDROGEN ANAEROBIC FERMENTATION PROCESSES USING A PRE-REACTOR/DEEP TANK REACTOR SYSTEM
    Publication number: 20130078687
    Abstract: Processes are disclosed for the low energy, anaerobic bioconversion of hydrogen and carbon monoxide in a gaseous substrate stream to oxygenated organic compounds such as ethanol by contact with microorganisms in a fermentation system with high conversion efficiency of both hydrogen and carbon monoxide. The processes of this invention use a pre-reactor and a deep, tank reactor in gaseous substrate flow sequence to obtain high conversion of gas substrate without undue risk of carbon monoxide inhibition.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: COSKATA ENERGY
    Inventors: Robert Hickey, Steven L. Donnellan