Patents by Inventor Johanna Sporl

Johanna Sporl 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 producing carbon fibers from cellulose fibers treated with sulfonic acid salts
    Patent number: 10995429
    Abstract: The invention relates to a process for producing carbon fibers from cellulosic fibers, characterized in that cellulosic fibers, which contain a sulfonic acid salt of formula (I), wherein R1 represents a hydrocarbon group and K+ represents a cation, are converted into carbon fibers.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: May 4, 2021
    Assignee: DEUTSCHE INSTITUTE FURTEXTIL-UND FASERFORSCHUNG DENKENDORF
    Inventors: Falko Abels, Martin Merger, Tomasz Cwik, Klemens Massonne, Johanna Sporl, Frank Hermanutz, Michael R. Buchmeiser