Patents by Inventor Hakki Yegingil

Hakki Yegingil 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
    Publication number: 20100281962
    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: July 16, 2010
    Publication date: November 11, 2010
    Applicant: DREXEL UNIVERSITY
    Inventors: WAN Y. SHIH, WEI-HENG SHIH, ANNA MARKIDOU, STEVEN T. SZWECZYK, HAKKI YEGINGIL
  • ENERGY HARVESTING DEVICE
    Publication number: 20100148519
    Abstract: A piezoelectric energy harvesting device (PEHD) comprising a driving element, conducting element, piezoelectric layer and non-piezoelectric layer capable of converting ambient mechanical energy into electrical energy. The piezoelectric layer may be constructed from PMN-PT or PZT having a thickness of about 1-150 ?m. The PEHD may be used to generate about 1 W. The harvested energy may be stored and used to power microelectronic devices and rechargeable battery technologies.
    Type: Application
    Filed: January 29, 2008
    Publication date: June 17, 2010
    Applicant: DREXEL UNIVERSITY
    Inventors: Wei-heng Shih, Wan Y. Shih, Hakki Yegingil
  • All electric piezoelectric finger sensor (PEFS) for soft material stiffness measurement
    Patent number: 7497133
    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: Grant
    Filed: May 23, 2005
    Date of Patent: March 3, 2009
    Assignee: Drexel University
    Inventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szweczyk, Hakki Yegingil
  • All electric piezoelectric finger sensor (PEFS) for soft material stiffness measurement
    Publication number: 20050277852
    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: May 23, 2005
    Publication date: December 15, 2005
    Inventors: Wan Shih, Wei-Heng Shih, Anna Markidou, Steven Szweczyk, Hakki Yegingil