Patents by Inventor Werner Huebner

Werner Huebner 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: 6231963
    Abstract: Described are tape-type magnetic recording media (I) including a non-magnetic substrate (III), at least one film applied to the substrate and, in at least one of these films, an inorganic acicular pigment (II) suitable for use as a supporting pigment, the ratio of the mean length to the mean diameter of the pigment (II) being at least 3 and the mean modulus of elasticity of the films being not less than 15 GPa in the longitudinal direction of the tape-type recording medium (I).
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: May 15, 2001
    Assignee: EMTEC Magnetics GmbH
    Inventors: August Lehner, Helmut Jakusch, Volker Koch, Manfred Ohlinger, Albert Kohl, Werner Lenz, Norbert Schneider, Peter Heilmann, Werner Hübner, Erich Hoffmann, Ronald John Veitch, Rudi Lehnert, Harald Jachow
  • Patent number: 5096779
    Abstract: A chromium dioxide material consisting of acicular, ferromagnetic chromium dioxide particles having a nonmagnetic, hydrogen-containing protective surface layer, which material has improved stability to chemical decomposition, a process for its preparation and magnetic recording media containing this chromium dioxide and having good long-term stability of the residual magnetization under conditions of high humidity and temperature are described.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: March 17, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael W. Mueller, Ekkehard Schwab, Helmut Auweter, Rainer Feser, Werner Huebner, Norbert Mueller, Manfred Ohlinger, Hermann Dikow
  • Patent number: 5009877
    Abstract: Acicular ferromagnetic chromium dioxide is stabilized by treatment with an alkali metal hydroxide in an aqueous alkaline suspension at elevated temperatures.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: April 23, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Steck, Laszlo Marosi, Herbert Haberkorn, Rainer Feser, Werner Huebner, Helmut Jakusch
  • Patent number: 4781851
    Abstract: Ferromagnetic chromium dioxide is improved by subjecting chromium dioxide materials prepared by a known method to an additional heat treatment.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: November 1, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Steck, Herbert Haberkorn, Laszlo Marosi, Werner Huebner, Helmut Jakusch
  • Patent number: 4267203
    Abstract: A process for the manufacture of magnetic recording media by dispersing a mixture of particulate anisotropic magnetic material and additives in a solution of a polymeric binder in an organic solvent, compressing and then releasing the pressure on the dispersion, thereafter applying a layer of the dispersion to a non-magnetizable base, orienting the anisotropic magnetic material by means of a magnetic field, and drying the coating.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: May 12, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Motz, Dieter Schaefer, Werner Huebner, Dieter Mayer
  • Patent number: 4201486
    Abstract: A process and apparatus for the manufacture of magnetic recording media, in which, immediately before the magnetic dispersion is applied to a base, the dispersion is subjected to shear by means of a disc rotatably mounted in a housing, by introducing it at the center of rotation of the disc and forcing it through a gap formed between the face of the disc and the wall of the housing, which gap tapers toward the rim of the disc.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: May 6, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Huebner, Job-Werner Hartmann, Friedrich Domas, Peter Nagel, Paul Deigner, Eberhard Koester, Hans Hauser
  • Patent number: 4155748
    Abstract: A method of preparing acicular ferromagnetic metal particles consisting essentially of iron and suitable for magnetic recording, said particles being modified at the surface with 0.02 to 0.2% by weight of carbon and with 0.5 to 1.9% by weight of phosphorus as phosphate, by reducing a finely divided acicular iron compound, wherein there are deposited on said iron compound, prior to reduction, (a) a hydrolysis-resistant substance selected from the group consisting of oxyacids of phosphorus, their esters and inorganic salts, and (b) a compound selected from the group consisting of aliphatic monobasic, dibasic and tribasic carboxylic acids of from 1 to 6 carbon atoms.
    Type: Grant
    Filed: September 29, 1977
    Date of Patent: May 22, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Steck, Hans H. Schneehage, Christof Jaeckh, Werner Huebner, Manfred Ohlinger, Werner Loeser
  • Patent number: 3930451
    Abstract: A roadway for rapid transit railways comprises concrete or reinforced concrete piers supporting an all steel support or suspension structure for the support and/or suspension as well as guiding of the vehicles.
    Type: Grant
    Filed: August 9, 1973
    Date of Patent: January 6, 1976
    Assignee: Michael Simon
    Inventors: Werner Huebner, Michael Simon, Peter Wagner