Patents by Inventor Jonas Engström

Jonas Engström 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).

  • Publication number: 20250051969
    Abstract: A process for forming a fiber tow, involves a wet spinning procedure comprising: dissolving cellulose pulp in an alkaline aqueous solvent to form a cellulose spin dope composition; spinning the cellulose spin dope composition in a coagulation bath having a pH of more than 7.0, preferably a pH of at least 10, to produce a fiber tow; and passing the produced fiber tow through a sequence of consecutive stretching and washing steps in which the formed fiber tow is washed with a washing liquid by a counter-current flow washing procedure.
    Type: Application
    Filed: October 31, 2024
    Publication date: February 13, 2025
    Inventors: Bengt HAGSTRÖM, Tobias KÖHNKE, Jonas ENGSTRÖM
  • Patent number: 12188157
    Abstract: A process for forming a fiber tow, involves a wet spinning procedure comprising the steps of: dissolving cellulose pulp N in an alkaline aqueous solvent to form a cellulose spin dope composition, spinning the cellulose spin dope composition in a coagulation having a p H of more than 7.0, preferably a pH of at least 10, to produce a fiber tow, and passing the produced fiber tow through a sequence of consecutive stretching and washing steps in which the formed fiber tow is washed with a washing liquid by a counter-current flow washing procedure.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: January 7, 2025
    Assignee: TREETOTEXTILE AB
    Inventors: Bengt Hagström, Tobias Köhnke, Jonas Engström
  • Publication number: 20220112628
    Abstract: A process for forming a fiber tow, involves a wet spinning procedure comprising the steps of: dissolving cellulose pulp N in an alkaline aqueous solvent to form a cellulose spin dope composition, spinning the cellulose spin dope composition in a coagulation having a p H of more than 7.0, preferably a pH of at least 10, to produce a fiber tow, and passing the produced fiber tow through a sequence of consecutive stretching and washing steps in which the formed fiber tow is washed with a washing liquid by a counter-current flow washing procedure.
    Type: Application
    Filed: February 20, 2020
    Publication date: April 14, 2022
    Inventors: Bengt Hagström, Tobias Köhnke, Jonas Engström
  • Patent number: 5912611
    Abstract: A surge arrester comprising a stack of a plurality of cylindrical varistor blocks (10), preferably made of metal oxide, which are arranged one after the other in the axial direction of the varistor blocks between an upper end electrode (11) and a lower end electrode (12) and surrounded by an elongated, electrically insulating external casing (19) of rubber or other polymeric material. The end electrodes (11, 12) are interconnected by means of at least three clamping members (15) of insulating material to achieve the required contact pressure between the different elements (10-14) in the stack. Between the lower end electrode (12) and the first block (10) in the stack of varistors, there is arranged a pivot means comprising a centrally placed pivot member (17), projecting from the lower end electrode (12), said pivot member (17) making contact with a pressure plate (14), resting against the lowermost block (10) in the stack of varistors, to achieve articulation in all transverse directions.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: June 15, 1999
    Assignee: Asea Brown Boveri AB
    Inventors: Soren Berggren, Jonas Engstrom, Gunnar Hellstrom, Bjorn Lindberg, Jan Lundquist, Bertil Moritz, Hakan Wieck