Patents by Inventor Sven-Erik Svensson

Sven-Erik Svensson 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).

  • Pretreatment of non-wood lignocelluiosic material
    Patent number: 8835156
    Abstract: The present disclosure provides a method for pre-treating non-wood lignocellulosic material containing less than 5 % (w/w) starch or sugar in a process for production of ethanol from lignocellulose, comprising the steps of: adding organic acid or organic acid-producing bacteria to the lignocellulosic material; storing the lignocellulosic material in the presence of the organic acid for a period of at least two weeks in an atmosphere of less than 5% oxygen to obtain organic acid-impregnated material; and heating the organic acid-impregnated material at a temperature of at least 160° C. to obtain pre-treated lignocellulosic material, wherein no, or substantially no, inorganic acid or base, including SO2, is added in the method.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: September 16, 2014
    Assignee: Sekab E-Technology AB
    Inventors: Lovisa Bjornsson, Sven-Erik Svensson, Sanam Monavari, Emma Kreuger, Guido Zacchi
  • Pretreatment of Non-Wood Lignocellulosic Material
    Publication number: 20120156727
    Abstract: The present disclosure provides a method for pre-treating non-wood lignocellulosic material containing less than 5 % (w/w) starch or sugar in a process for production of ethanol from lignocellulose, comprising the steps of: adding organic acid or organic acid-producing bacteria to the lignocellulosic material; storing the lignocellulosic material in the presence of the organic acid for a period of at least two weeks in an atmosphere of less than 5% oxygen to obtain organic acid-impregnated material; and heating the organic acid-impregnated material at a temperature of at least 160° C. to obtain pre-treated lignocellulosic material, wherein no, or substantially no, inorganic acid or base, including SO2, is added in the method.
    Type: Application
    Filed: June 17, 2010
    Publication date: June 21, 2012
    Inventors: Lovisa Bjornsson, Sven-Erik Svensson, Sanam Monavari, Emma Kreuger, Guido Zacchi