Patents by Inventor Susan M. Hennessey

Susan M. Hennessey 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).

  • Treatment of biomass to obtain fermentable sugars
    Patent number: 7932063
    Abstract: Biomass is pretreated using a low concentration of aqueous ammonia at high biomass concentration. Pretreated biomass is further hydrolyzed with a saccharification enzyme consortium. Fermentable sugars released by saccharification may be utilized for the production of target chemicals by fermentation.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: April 26, 2011
    Assignees: E. I. du Pont de Nemours and Company, Alliance For Sustainable Energy LLC
    Inventors: James B. Dunson, Jr., Melvin Tucker, Richard Elander, Susan M. Hennessey
  • Process for concentrated biomass saccharification
    Patent number: 7807419
    Abstract: Processes for saccharification of pretreated biomass to obtain high concentrations of fermentable sugars are provided. Specifically, a process was developed that uses a fed batch approach with particle size reduction to provide a high dry weight of biomass content enzymatic saccharification reaction, which produces a high sugars concentration hydrolysate, using a low cost reactor system.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: October 5, 2010
    Assignees: E. I. du Pont de Nemours and Company, Alliance for Sustainable Energy LLC
    Inventors: Susan M. Hennessey, Mayis Seapan, Richard T. Elander, Melvin P. Tucker