Patents by Inventor Stephen A. Zayachek

Stephen A. Zayachek 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).

  • Bale breaker
    Patent number: 5217174
    Abstract: The invention comprises a method and apparatus for breaking apart tightly compressed and interlocked articles such as plastic bottles into separate individual articles in a form suitable for subsequent processing.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: June 8, 1993
    Assignee: WTE Corporation
    Inventors: Norman W. Martin, Fritz Van Lingen, Stephen A. Zayachek, John J. Lasky, Jr.