Patents by Inventor Robert Protz

Robert Protz 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).

  • Process for the manufacture of a precursor yarn
    Patent number: 12234577
    Abstract: The present invention relates to a method for manufacturing precursor yarn comprising lignin, which may be further processed into intermediate carbon fibers and finally also carbon fibers. It also relates to carbon fibers and uses of said fibers. Said method involves applying a water-free spin finish.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: February 25, 2025
    Assignee: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johannes Ganster, Andre Lehmann
  • Process for the manufacture of a shaped body
    Patent number: 10968540
    Abstract: The present invention relates to a method for manufacturing a shaped body comprising lignin which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. The present invention addresses the problem of lignin leaching into a precipitation bath. The solution to this problem is a novel method for minimizing the loss of lignin through the addition of certain salts into the precipitation bath.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: April 6, 2021
    Assignee: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johannes Ganster, Andre Lehmann
  • Fiber and a process for the manufacture thereof
    Patent number: 10626523
    Abstract: The present invention relates to a method for manufacturing thermally stabilized, non-sticky and stretchable fibers, which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. Also a highly oriented intermediate carbon fiber is disclosed together with a highly oriented carbon fiber.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: April 21, 2020
    Assignee: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johnannes Ganster, André Lehmann
  • A PROCESS FOR THE MANUFACTURE OF A PRECURSOR YARN
    Publication number: 20190085484
    Abstract: The present invention relates to a method for manufacturing precursor yarn comprising lignin, which may be further processed into intermediate carbon fibers and finally also carbon fibers. It also relates to carbon fibers and uses of said fibers. Said method involves applying a water-free spin finish.
    Type: Application
    Filed: October 6, 2016
    Publication date: March 21, 2019
    Applicant: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johannes Ganster, Andre Lehmann
  • WET SPINNING METHOD FOR PRODUCING A LIGNIN-CONTAINING FIBER AS A PRECURSOR FOR A CARBON FIBER
    Publication number: 20190032250
    Abstract: The invention relates to a method for producing a precursor fiber which is suitable for further processing into carbon and activated carbon fibers. The method is a wet spinning method in which a spinning solution consisting of lignin or lignin derivatives, cellulose carbamate, and alkali lye are pressed through the holes of a nozzle and introduced directly into a coagulation bath. The precursor fibers falling into the bath can undergo different additional method steps: they can be stretched, post-treated, dried at an increased temperature, and wound. Because the precursor fibers constitute an inexpensive starting material, the precursor fibers can be used in connection with the production of carbon and activated carbon fibers.
    Type: Application
    Filed: January 26, 2016
    Publication date: January 31, 2019
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventors: Johannes GANSTER, André LEHMANN, Robert PROTZ, Jens ERDMANN
  • A PROCESS FOR THE MANUFACTURE OF A SHAPED BODY
    Publication number: 20180305844
    Abstract: The present invention relates to a method for manufacturing a shaped body comprising lignin which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. The present invention addresses the problem of lignin leaching into a precipitation bath. The solution to this problem is a novel method for minimizing the loss of lignin through the addition of certain salts into the precipitation bath.
    Type: Application
    Filed: October 6, 2016
    Publication date: October 25, 2018
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johannes Ganster, Andre Lehmann
  • A FIBER AND A PROCESS FOR THE MANUFACTURE THEREOF
    Publication number: 20180163326
    Abstract: The present invention relates to a method for manufacturing thermally stabilized, non-sticky and stretchable fibers, which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. Also a highly oriented intermediate carbon fiber is disclosed together with a highly oriented carbon fiber.
    Type: Application
    Filed: June 9, 2016
    Publication date: June 14, 2018
    Applicant: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johnannes Ganster, André Lehmann