Patents by Inventor Franz Nussbaumer

Franz Nussbaumer 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).

  • Device for the production of cellulose staple fibers
    Publication number: 20050012238
    Abstract: The invention is concerned with a device for the production of cellulosic staple fibers comprising a cutting device (1) for cutting cellulosic continuous filaments into staple fibers, a liquid-transport device (2) for transporting the staple fibers. The device according to the invention is characterized in that the liquid-transport device (2) is provided with a portion (4) shaped as a syphon (4).
    Type: Application
    Filed: June 24, 2004
    Publication date: January 20, 2005
    Inventors: Christoph Schrempf, Wilhelm Feilmair, Franz Nussbaumer, Helmut Schwab, Christian Rohrer, Heinrich Firgo
  • Method for preparing or purifying aqueous solutions of a tertiary amino-oxide
    Patent number: 6579461
    Abstract: The invention relates to a process for the reprocessing respectively purification of aqueous solutions of a tertiary amine oxide, particularly of process waters, e.g. used precipitation baths, which occur during the production of cellulosic moulded bodies, comprising the separation of turbidifying agents and solid impurities from the solution. The process in accordance with the invention is characterised in that the turbidifying agents and impurities are at least partly separated by means of a flotation process.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: June 17, 2003
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Johann Männer, Rudolf Emeder, Christian Hager, Franz Nussbaumer, Thomas Endl, Johannes Kneissl
  • Process for the reprocessing respectively purification of aqueous solutions of a tertiary amine oxide
    Publication number: 20010045394
    Abstract: The invention relates to a process for the reprocessing respectively purification of aqueous solutions of a tertiary amine oxide, particularly of process waters, e.g. used precipitation baths, which occur during the production of cellulosic moulded bodies, comprising the separation of turbidifying agents and solid impurities from the solution. The process in accordance with the invention is characterised in that the turbidifying agents and impurities are at least partly separated by means of a flotation process.
    Type: Application
    Filed: March 13, 2001
    Publication date: November 29, 2001
    Applicant: Lenzing Aktiengesellschaft
    Inventors: Johann Manner, Rudolf Emeder, Christian Hager, Franz Nussbaumer, Endl Thomas, Jpjammes Kneissl