Patents by Inventor Antje Lieske

Antje Lieske 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 thermally stable melt-spinnable pan copolymers, pan copolymers, molded bodies made thereof, and a method for producing said molded bodies
    Patent number: 11203656
    Abstract: The invention relates to a novel synthesis process in order to produce meltable PAN copolymers with increased thermal stability. The PAN copolymers produced using the method according to the invention surprisingly exhibit improved thermal and mechanical properties compared to PAN copolymers produced using methods known from the prior art. The invention additionally relates to corresponding PAN copolymers and to molded bodies produced therefrom or to a method for producing such molded bodies, in particular melt-spun mono- or mufti-filaments.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: December 21, 2021
    Assignee: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V.
    Inventors: Mats Timothy Knoop, Antje Lieske, Mathias Hahn
  • Melt spinnable copolymers from polyacrylonitrile, method for producing fibers or fiber precursors by means of melt spinning, and fibers produced accordingly
    Patent number: 11180869
    Abstract: The invention relates to a method for the production of thermally stabilised melt-spun fibres in which polyacrilonitrile (PAN) fibres or PAN fibre precursors produced by melt-spinning are treated in an aqueous alkaline solution, comprising in addition a solvent for PAN. Likewise, the invention relates to fibres which are producible according to this method.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 23, 2021
    Assignee: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V.
    Inventors: Mats Timothy Knoop, Antje Lieske
  • METHOD FOR PRODUCING THERMALLY STABLE MELT-SPINNABLE PAN COPOLYMERS, PAN COPOLYMERS, MOLDED BODIES MADE THEREOF, AND A METHOD FOR PRODUCING SAID MOLDED BODIES
    Publication number: 20200291158
    Abstract: The invention relates to a novel synthesis process in order to produce meltable PAN copolymers with increased thermal stability. The PAN copolymers produced using the method according to the invention surprisingly exhibit improved thermal and mechanical properties compared to PAN copolymers produced using methods known from the prior art. The invention additionally relates to corresponding PAN copolymers and to molded bodies produced therefrom or to a method for producing such molded bodies, in particular melt-spun mono- or mufti-filaments.
    Type: Application
    Filed: October 27, 2016
    Publication date: September 17, 2020
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventors: Mats Timothy KNOOP, Antje LIESKE, Mathias HAHN
  • MELT SPINNABLE COPOLYMERS FROM POLYACRYLONITRILE, METHOD FOR PRODUCING FIBERS OR FIBER PRECURSORS BY MEANS OF MELT SPINNING, AND FIBERS PRODUCED ACCORDINGLY
    Publication number: 20190100856
    Abstract: The invention relates to a method for the production of thermally stabilised melt-spun fibres in which polyacrilonitrile (PAN) fibres or PAN fibre precursors produced by melt-spinning are treated in an aqueous alkaline solution, comprising in addition a solvent for PAN. Likewise, the invention relates to fibres which are producible according to this method.
    Type: Application
    Filed: March 22, 2016
    Publication date: April 4, 2019
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventors: Mats Timothy KNOOP, Antje LIESKE
  • METHOD FOR THE THERMAL STABILISATION OF FIBRES AND SAID TYPE OF STABILISED FIBRES
    Publication number: 20170298539
    Abstract: The invention relates to a method for the production of thermally stabilised melt spun fibres, in which polyacrylonitrile (PAN) fibres or PAN fibre precursors produced by melt spinning are treated in an aqueous alkaline solution which comprises in addition a solvent for PAN. Likewise, the invention relates to fibres which are producible according to this method.
    Type: Application
    Filed: September 10, 2015
    Publication date: October 19, 2017
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Mathias HAHN, Antje LIESKE, Mats KNOOP
  • MELT SPINNABLE COPOLYMERS FROM POLYACRYLONITRILE, METHOD FOR PRODUCING FIBERS OR FIBER PRECURSORS BY MEANS OF MELT SPINNING, AND FIBERS PRODUCED ACCORDINGLY
    Publication number: 20170275405
    Abstract: The invention relates to melt spinnable copolymers of polyacrylonitrile (PAN) which are producible by means of copolymerisation of acrylonitrile with an alkoxyalkylacrylate. As additional comonomers alkylacrylates and vinyl esters may be considered. Likewise, the invention relates to a method for the production of fibres or fibre precursors, in particular carbon fibre precursors, by means of melt spinning, in which the mentioned copolymer is used. Furthermore, the invention relates to fibres produced in this way, in particular carbon fibres.
    Type: Application
    Filed: September 10, 2015
    Publication date: September 28, 2017
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWAND TEN FORSCHUNG E.V.
    Inventors: Mathias HAHN, Antje LIESKE, Mats KNOOP
  • Method for the production of pulverulent high-molecular water-soluble polymers for application in solid/liquid separation processes
    Patent number: 7786190
    Abstract: The present invention relates to a method for the production of pulverulent high-molecular water-soluble polymers for application in solid/liquid separation processes. The invention relates in particular to a method for modifying and drying inverse polymer dispersions with the help of kneading technology while recovering the solvents used.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: August 31, 2010
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Matthias Hahn, Antje Lieske
  • Method For The Production Of Pulverulent High-Molecular Water-Soluble Polymers For Application In Solid/Liquid Separation Processes
    Publication number: 20080234429
    Abstract: The present invention relates to a method for the production of pulverulent high-molecular water-soluble polymers for application in solid/liquid separation processes. The invention relates in particular to a method for modifying and drying inverse polymer dispersions with the help of kneading technology whilst recovering the solvents used.
    Type: Application
    Filed: June 8, 2006
    Publication date: September 25, 2008
    Applicant: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Matthias Hahn, Antje Lieske
  • Water soluble branched block copolymers
    Publication number: 20050182222
    Abstract: The invention pertains to water soluble branched block copolymers comprising quaternary ammonium compounds and poly(alkylene glycols), whereby the molecular building blocks, which contain the quaternary ammonium groups, form backbone chains that are linked together in a wide mesh manner by the poly(alkylene glycol) blocks.
    Type: Application
    Filed: March 21, 2003
    Publication date: August 18, 2005
    Inventors: Werner Jaeger, Mathias Hahn, Antje Lieske, Heike Korth, Rainer Staeck, Angelo Scordialo