Patents by Inventor Christian NORHAUSEN

Christian NORHAUSEN 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 to manufacture a spun-dyed para-aramid filament yarn and sliver
    Patent number: 9863066
    Abstract: Manufacturing a spun-dyed para-aramid filament yarn includes (a) preparing a spin dope comprising a para-aramid polymer, at least one dyestuff and concentrated sulfuric acid, (b) spinning the spin dope through a spinneret to obtain spun filaments, (c) coagulating the spun filaments to obtain coagulated filaments, (d) neutralizing the coagulated filaments to obtain neutralized filaments, (e) washing the neutralized filaments to obtain washed filaments, and (f) drying the washed filaments to obtain dried filaments. In step a) the spin dope includes 17.5 to 18.5% by weight of a para-aramid polymer with respect to the weight of the spin dope, and 4 to 15% by weight of the at least one dyestuff with respect to the weight of the para-aramid polymer plus the at least one dyestuff. In step f) the filaments are hold under a tension in a range from 0.2 to 0.8 cN/dtex.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: January 9, 2018
    Assignee: TEIJIN ARAMID GMBH
    Inventors: Robin Winters, Regine Zumloh-Nebe, Christian Norhausen
  • PROCESS TO MANUFACTURE A SPUN-DYED PARA-ARAMID FILAMENT YARN AND A SLIVER, SLIVER, STAPLE FIBER YARN AND TEXTILE FABRIC
    Publication number: 20160273132
    Abstract: Manufacturing a spun-dyed para-aramid filament yarn includes (a) preparing a spin dope comprising a para-aramid polymer, at least one dyestuff and concentrated sulfuric acid, (b) spinning the spin dope through a spinneret to obtain spun filaments, (c) coagulating the spun filaments to obtain coagulated filaments, (d) neutralizing the coagulated filaments to obtain neutralized filaments, (e) washing the neutralized filaments to obtain washed filaments, and (f) drying the washed filaments to obtain dried filaments. In step a) the spin dope includes 17.5 to 18.5% by weight of a para-aramid polymer with respect to the weight of the spin dope, and 4 to 15% by weight of the at least one dyestuff with respect to the weight of the para-aramid polymer plus the at least one dyestuff. In step f) the filaments are hold under a tension in a range from 0.2 to 0.8 cN/dtex.
    Type: Application
    Filed: November 18, 2014
    Publication date: September 22, 2016
    Applicant: TEIJIN ARAMID GMBH
    Inventors: Robin WINTERS, Regine ZUMLOH-NEBE, Christian NORHAUSEN