Patents by Inventor Steven T. Szewczyk

Steven T. Szewczyk 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).

  • All electric piezoelectric finger sensor (PEFS) for soft material stiffness measurement
    Patent number: 9945835
    Abstract: A PEFS (Piezoelectric Finger Sensor) acts as an “electronic finger” capable of accurately and non-destructively measuring both the Young's compression modulus and shear modulus of tissues with gentle touches to the surface. The PEFS measures both the Young's compression modulus and shear modulus variations in tissue generating a less than one-millimeter spatial resolution up to a depth of several centimeters. This offers great potential for in-vivo early detection of diseases. The PEFS may be incorporated into a portable hand-held device. The PEFS offers superior sensitivity.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 17, 2018
    Assignee: Drexel University
    Inventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szewczyk, Hakki Yegingil
  • All Electric Piezoelectric Finger Sensor (PEFS) for Soft Material Stiffness Measurement
    Publication number: 20170205389
    Abstract: A PEFS (Piezoelectric Finger Sensor) acts as an “electronic finger” capable of accurately and non-destructively measuring both the Young's compression modulus and shear modulus of tissues with gentle touches to the surface. The PEFS measures both the Young's compression modulus and shear modulus variations in tissue generating a less than one-millimeter spatial resolution up to a depth of several centimeters. This offers great potential for in-vivo early detection of diseases. A portable hand-held device is also disclosed. The PEF offers superior sensitivity.
    Type: Application
    Filed: March 7, 2017
    Publication date: July 20, 2017
    Applicant: Drexel University
    Inventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szewczyk, Hakki Yegingil