Patents by Inventor Ernst Ricker

Ernst Ricker 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).

  • Magnetic recording media
    Patent number: 5064721
    Abstract: Magnetic recording media consist of a nonmagnetic base and at least one matnetizable layer which is firmly applied thereon and is based on a magnetic material finely dispersed in a binder, consisting of not less than 50% by weight of a polyurethane, and further conventional additives, wherein the magnetizable layer also contains a saturated, branched hydrocarbon.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: November 12, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: August Lehner, Albert Kohl, Hermann Roller, Werner Lenz, Ludwig Kreitner, Helmut Kopke, Friedrich Sommermann, Ernst Ricker
  • Magnetic recording media
    Patent number: 4668586
    Abstract: In magnetic recording media consisting of a non-magnetic base and, bonded on top of this, one or more magnetizable layers based on magnetic material finely dispersed in a polymer binder, a lubricant and further conventional additives, the lubricant used is a triethanolamine esterified with oleic acid.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: May 26, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Albert Kohl, Milena Melzer, August Lehner, Norbert Schneider, Eberhard Koester, Werner Balz, Friedrich Sommermann, Ernst Ricker