Patents by Inventor Carmen Knobelsdorf

Carmen Knobelsdorf 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).

  • Patent number: 8153940
    Abstract: The invention relates to a flat heater, which is used for applications in the range of heating voltages of up to 1000 V, produces attainable powers of up to 2 kW/m2 and is characterized by the fact that the electrical resistance required for the heating is formed by an electrically conductive cellulose nonwoven. Metallic contacts which are incorporated ensure the connection of the conductive cellulose nonwoven to a voltage source. Polymer films applied on both sides provide mechanical and electrical protection and prevent the ingress of moisture into the cellulose nonwoven.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: April 10, 2012
    Assignee: Thüringisches Institut für Textil-und Kunststoff-Forschung E.V.
    Inventors: Frank-Günter Niemz, Bernd Riedel, Carmen Knobelsdorf
  • Publication number: 20090057296
    Abstract: The invention relates to a flat heater, which is used for applications in the range of heating voltages of up to 1000 V, produces attainable powers of up to 2 kW/m2 and is characterized by the fact that the electrical resistance required for the heating is formed by an electrically conductive cellulose nonwoven. Metallic contacts which are incorporated ensure the connection of the conductive cellulose nonwoven to a voltage source. Polymer films applied on both sides provide mechanical and electrical protection and prevent the ingress of moisture into the cellulose nonwoven.
    Type: Application
    Filed: September 23, 2008
    Publication date: March 5, 2009
    Inventors: Frank-Gunter Niemz, Bernd Riedel, Carmen Knobelsdorf
  • Publication number: 20070048522
    Abstract: The invention relates to pre-impregnating agents for high-resistant and elastic composite fibres having 50-85 mass % textile surface components and 15-50 mass % polyaminotriazine ether containing carbamide acid ester groups. The invention also relates to methods for making the pre-impregnating agents. The pre-impregnating agents can be used for heat-protecting cloths, flameproof covers, electric insulating papers, construction parts and for vehicle equipment.
    Type: Application
    Filed: March 19, 2004
    Publication date: March 1, 2007
    Inventors: Manfred Ratzsch, Rene Dicke, Markus Machherndl, Martin Burger, Carmen Knobelsdorf, Thomas Reussmann
  • Publication number: 20060283567
    Abstract: The invention relates to a method for producing cellulosed molded articles having a functional effect. The method is characterized by charging cellulosed fibers or films with incorporated ion exchangers having bactericidal metal ions and/or ionic pharmaceutical active substances in such a manner that a depot of these active substances is built up in the fiber. Said depot time releases the active substances in the amount of the corresponding equivalent concentration when the fibers and films are used in aqueous solutions. The invention also relates to molded articles produced according to the inventive method.
    Type: Application
    Filed: April 1, 2004
    Publication date: December 21, 2006
    Inventors: Reiner Buettner, Hardy Markwitz, Carmen Knobelsdorf, Ralf Bauer, Frank Meister
  • Patent number: 7052775
    Abstract: A process for producing cellulosic formed materials having high water retention capacity according to the dry-wet extrusion process by producing a solution of 5 to 20 wt.-% of cellulose in a hydrous tertiary amine oxide, extruding the solution, stretching the extrudate in a non-precipitating medium, and precipitating the formed materials in an aqueous or alcoholic precipitating bath, characterized by extruding a solution including 0.01 to 250 wt.-%, relative to cellulose, of at least one superabsorbent polymer having a grain size of ?100 ?m. The fibers, films, and composite materials being formed are remarkable for their high water retention capacity and are suitable in the production of hygiene products, baby or disposable diapers, sanitary towels, tampons, incontinence articles, absorbent patches, wound dressings, strappings, bandages, absorbent cloths, moisture-absorbing clothing, bed mattings, filter materials or filters, packaging materials, or cable sheathings.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: May 30, 2006
    Assignee: Stockhausen GmbH & Co. KG
    Inventors: Waldemar Dohrn, Reiner Buettner, Ingo Notz, Georg Werner, Carmen Knobelsdorf, Edgar Herrmann, Michael Schuemann
  • Publication number: 20040265612
    Abstract: A process for producing cellulosic formed materials having high water retention capacity according to the dry-wet extrusion process by producing a solution of 5 to 20 wt.-% of cellulose in a hydrous tertiary amine oxide, extruding the solution, stretching the extrudate in a non-precipitating medium, and precipitating the formed materials in an aqueous or alcoholic precipitating bath, characterized by extruding a solution including 0.01 to 250 wt.-%, relative to cellulose, of at least one superabsorbent polymer having a grain size of ≦100 &mgr;m. The fibers, films, and composite materials being formed are remarkable for their high water retention capacity and are suitable in the production of hygiene products, baby or disposable diapers, sanitary towels, tampons, incontinence articles, absorbent patches, wound dressings, strappings, bandages, absorbent cloths, moisture-absorbing clothing, bed mattings, filter materials or filters, packaging materials, or cable sheathings.
    Type: Application
    Filed: July 30, 2004
    Publication date: December 30, 2004
    Inventors: Waldemar Dohrn, Reiner Buettner, Ingo Notz, Georg Werner, Carmen Knobelsdorf, Edgar Herrmann, Michael Schuemann