Patents by Inventor Zack A. Shana

Zack A. Shana 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).

  • Optical sensor for opaque and non-opaque materials
    Patent number: 6687004
    Abstract: A sensor is capable of detecting clear or opaque materials. The sensor can be disposed around a clear tube which carries a material such as liquid. The sensor utilizes a thin beam light source and a wide area photo detector. A window comparator determines the presence or absence of a material such as liquid.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: February 3, 2004
    Assignee: Marquette University
    Inventors: Zack A. Shana, Carljon Mercier
  • Piezoelectric resonant sensor using the acoustoelectric effect
    Patent number: 5455475
    Abstract: An AT cut quartz crystal resonator has an unbalanced electrode geometry to induce a particularly strong electrical field in a surface of the resonator adjacent a medium. The electrical field will interact with ions and dipoles in the medium and may be used to accurately and repeatably measure the electrical characteristics of the medium. Specific examples are provided illustrating the use of a sensor designed in accord with the invention in sensing dilute electrolytes, and other applications are contemplated.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: October 3, 1995
    Assignee: Marquette University
    Inventors: Fabien J. Josse, Zack A. Shana