Patents by Inventor Goran Gellerstedt

Goran 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
  • Thermally reactive thermoplastic intermediate product and method of manufacturing thereof
    Patent number: 10941297
    Abstract: The present disclosure relates to a thermally reactive thermoplastic intermediate product, in the form of a shaped body, wherein the intermediate comprises a composition, wherein the composition comprises a purified or optionally unpurified softwood lignin and at least a first additive.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: March 9, 2021
    Assignee: Stora Enso OYJ
    Inventors: Niklas Garoff, Dimitri Areskogh, Goran Gellerstedt, Stephen Walter, Pavan Kumar Manvi, Gunnar Seide, Thomas Gries
  • THERMALLY REACTIVE THERMOPLASTIC INTERMEDIATE PRODUCT AND METHOD OF MANUFACTURING THEREOF
    Publication number: 20160297970
    Abstract: The present disclosure relates to a thermally reactive thermoplastic intermediate product, in the form of a shaped body, wherein the intermediate comprises a composition, wherein the composition comprises a purified or optionally unpurified softwood lignin and at least a first additive.
    Type: Application
    Filed: November 7, 2013
    Publication date: October 13, 2016
    Inventors: Niklas Garoff, Dimitri Areskogh, Goran Gellerstedt, Stephen Walter, Pavan Kumar Manvi, Gunnar Seide, Thomas Gries
  • Method for producing a lignin fiber
    Patent number: 9446955
    Abstract: Disclosed is a method of producing a continuous lignin fiber from softwood and/or hardwood alkali lignin. The lignin fiber can be further treated to obtain structural carbon fiber.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: September 20, 2016
    Assignee: INNVENTIA AB
    Inventors: Elisabeth Sjholm, Goran Gellerstedt, Rickard Drougge, Ida Norberg, Ylva Nordstrom
  • 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
  • METHOD FOR PRODUCING A LIGNIN FIBER
    Publication number: 20140219909
    Abstract: Disclosed is a method of producing a continuous lignin fiber from softwood and/or hardwood alkali lignin. The lignin fiber can be further treated to obtain structural carbon fiber.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 7, 2014
    Applicant: INNVENTIA AB
    Inventors: Elisabeth Sjoholm, Goran Gellerstedt, Rickard Drougge, Ida Norberg, Ylva Nordstrom
  • Device for a pyrotechnical flare body comprising a flame spreader for the flame emitted by the flare body
    Patent number: 4005656
    Abstract: A projectile such as a bomb or rocket is provided with a flare section comprising an elongated cylindrical casing containing a body of flare material. An elongated support element extends through the flare body along its central axis, and a truncated conical flame spreader is attached to one end of the support element with the smaller end of the truncated cone in firm engagement with an end surface of the flare body and with at least the major portion of the conical surface of the flame spreader recessed within an extended portion of the casing. A nose fairing is removably attached to the extended portion of the casing and is adapted to be blown away from the casing by a charge located in a cavity within the flame spreader.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: February 1, 1977
    Assignee: AB Bofors
    Inventors: Nils Goran Gellerstedt, Yngve Bertil Stradalen