Patents by Inventor Thoedora Retsina

Thoedora Retsina 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).

  • Separation of lignin from hydrolyzate
    Patent number: 8864941
    Abstract: A method for the production water insoluble reactive lignin having low sulfur content and lignosulfonates from lignocellulosic material in a batch or continuous process. Lignocellulosic material is fractionated to produce water insoluble native lignin and lignosulfonates in various ratios, while preserving the cellulose and hydrolyzed hemicelluloses using water, ethanol and sulfur dioxide.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: October 21, 2014
    Assignee: API Intellectual Property Holdings, LLC
    Inventors: Thoedora Retsina, Vesa Pylkkanen