Patents by Inventor Hilmar Lechner

Hilmar Lechner 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: 4629632
    Abstract: Layer-type magnetic recording media are produced by applying a dispersion of a magnetically anisotropic material in a binder solution onto a flexible plastic base provided with an adhesion-promoting layer and then solidifying the magnetic layer, by a method in which the adhesion-promoting layer consists of a radiation-curable aqueous dispersion of a polymer.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: December 16, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Balz, Jenoe Kovacs, Hilmar Lechner, Dieter Schaefer, Ingolf Buethe
  • Patent number: 4254585
    Abstract: A process and apparatus for the treatment of the recording surface of magnetic recording media using consecutively arranged units for burnishing, cleaning and calendering the web of plastics film provided with a magnetic coating. The process and apparatus of the invention are particularly suitable for the manufacture of magnetic tapes for the recording and playback of video signals.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: March 10, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schoettle, Wulf Muenzner, Hilmar Lechner, Dieter Woeppel, Lothar Gliniorz