Patents by Inventor Ottmar Buerkle

Ottmar Buerkle 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 tape cassette with windows
    Patent number: 4530475
    Abstract: A tape cassette, particularly a magnetic tape cassette, has two or more windows which are separated from one another by a separator housing member and which are located on a common carrier which may consist, for example, of connecting webs between the windows. The window arrangement is useful in standardized cassettes, for example compact cassettes, as well as in all other film, sound, video and data cassettes.
    Type: Grant
    Filed: July 9, 1984
    Date of Patent: July 23, 1985
    Assignee: Basf Aktiengesellschaft
    Inventors: Ottmar Buerkle, Kurt Schmidts, Alfred Schneider, Walter Schuett