Patents by Inventor Göran Gellerstedt

Göran Gellerstedt 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).

  • Method for stabilizing lignin fiber for further conversion to carbon fiber
    Patent number: 11286582
    Abstract: A method for producing a stabilized lignin fiber from softwood alkaline lignin by heat treatment in the absence of oxidant is disclosed. The stabilized lignin fiber can be further treated to obtain carbon fiber.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: March 29, 2022
    Assignee: RISE INNVENTIA AB
    Inventors: Elisabeth Sjöholm, Göran Gellerstedt, Rickard Drougge, Ida Norberg
  • METHOD FOR STABILIZING LIGNIN FIBER FOR FURTHER CONVERSION TO CARBON FIBER
    Publication number: 20140353861
    Abstract: A method for producing a stabilized lignin fiber from softwood alkaline lignin by heat treatment in the absence of oxidant is disclosed. The stabilized lignin fiber can be further treated to obtain carbon fiber.
    Type: Application
    Filed: January 21, 2013
    Publication date: December 4, 2014
    Inventors: Elisabeth Sjöholm, Göran Gellerstedt, Rickard Drougge, Ida Norberg