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).
-
Publication number: 20220069196Abstract: A lead-free KNN-based piezoelectric material represented by the composition formula (KaNabLic)(NbdTaeSbf)Og, where 0.4?a?0.5, 0.5?b?0.6, 0.01?c?0.1, 0.5?d?1.0, 0.05?e?0.15, 0.01?f?0.09, 1?g?3. In one embodiment, the lead-free KNN-based piezoelectric material has a d33>300 pm/V and a Tcurie>250° C. In one embodiment, the d33 and Tcurie of the lead-free textured KNN-based piezoelectric material can be adjusted by creating phase boundaries of (i) orthorhombic to tetragonal (O-T), (ii) rhombohedral to orthorhombic (R-O), and (iii) orthorhombic to tetragonal (O-T). In one embodiment, the lead-free KNN-based piezoelectric material is textured with NaNbO3 or Ba2NaNb5O15 seeds which are platelet or acicular shaped. In one embodiment, the amount, orientation, or particle size distribution of the NaNbO3 or Ba2NaNb5O15 texturing seeds in the lead-free textured KNN-based piezoelectric material can be altered.Type: ApplicationFiled: September 1, 2021Publication date: March 3, 2022Applicant: CTS CorporationInventors: Hakki Yegingil, Gerald T. Stranford, Anthony Phillip Seibert, Ender Suvaci, Abdulkadir Murat Avci
-
Patent number: 10076247Abstract: A sensor system for measuring an elastic modulus and a shear modulus and a method for evaluating a tissue. The invention pertains to a method for determining the presence of and/or characterizing abnormal growths, using a piezoelectric finger sensor (PEFS) system. The PEFS system may be particularly useful for screening for tumors and various forms of cancer. Additionally, the PEFS system may be useful for various dermatological applications.Type: GrantFiled: August 21, 2014Date of Patent: September 18, 2018Inventors: Wan Y. Shih, Wei-Heng Shih, Hakki Yegingil, Ari D. Brooks
-
Patent number: 9945835Abstract: 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: GrantFiled: March 7, 2017Date of Patent: April 17, 2018Assignee: Drexel UniversityInventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szewczyk, Hakki Yegingil
-
Publication number: 20170205389Abstract: 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: ApplicationFiled: March 7, 2017Publication date: July 20, 2017Applicant: Drexel UniversityInventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szewczyk, Hakki Yegingil
-
Patent number: 9618497Abstract: 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: GrantFiled: August 14, 2014Date of Patent: April 11, 2017Assignee: Drexel UniversityInventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szweczyk, Hakki Yegingil
-
Publication number: 20150025418Abstract: A sensor system for measuring an elastic modulus and a shear modulus and a method for evaluating a tissue. The invention pertains to a method for determining the presence of and/or characterizing abnormal growths, using a piezoelectric finger sensor (PEFS) system. The PEFS system may be particularly useful for screening for tumors and various forms of cancer. Additionally, the PEFS system may be useful for various dermatological applications.Type: ApplicationFiled: August 21, 2014Publication date: January 22, 2015Applicants: DREXEL UNIVERSITY, PHILADELPHIA HEALTH & EDUCATION CORPORATION d/b/a DREXEL UNIVERSITY COLLEGE OF MEDICINEInventors: Wan Y. SHIH, Wei-Heng SHIH, Hakki YEGINGIL, Ari D. BROOKS
-
Publication number: 20140352448Abstract: 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: ApplicationFiled: August 14, 2014Publication date: December 4, 2014Applicant: DREXEL UNIVERSITYInventors: WAN Y. SHIH, WEI-HENG SHIH, ANNA MARKIDOU, STEVEN T. SZWECZYK, HAKKI YEGINGIL
-
Patent number: 8845555Abstract: The present invention provides a sensor system for measuring an elastic modulus and a shear modulus and a method for using the sensor system to evaluate a tissue by determining the presence of and/or characterizing abnormal growths. The method involves applying a set of forces of different magnitudes to one or more locations of tissue, detecting the corresponding displacements due to said applied forces, determining the forces acting on those locations of tissue which are a combination of forces from the applied voltages and the countering forces from tissue deformation, obtaining the elastic modulus and/or shear modulus for a plurality of locations, and determining abnormal growth invasiveness, malignancy or the presence of a tumor from said elastic and/or shear moduli.Type: GrantFiled: September 19, 2013Date of Patent: September 30, 2014Assignees: Drexel University, Philadelphia Health & Education CorporationInventors: Wan Y. Shih, Wei-Heng Shih, Hakki Yegingil, Ari D. Brooks
-
Patent number: 8826749Abstract: 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: GrantFiled: September 4, 2013Date of Patent: September 9, 2014Assignee: Drexel UniversityInventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szweczyk, Hakki Yegingil
-
Publication number: 20140076067Abstract: 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: ApplicationFiled: September 4, 2013Publication date: March 20, 2014Applicant: DREXEL UNIVERSITYInventors: WAN Y. SHIH, WEI-HENG SHIH, ANNA MARKIDOU, STEVEN T. SZWECZYK, HAKKI YEGINGIL
-
Publication number: 20140058260Abstract: The present invention provides a sensor system for measuring an elastic modulus and a shear modulus and a method for using the sensor system to evaluate a tissue by determining the presence of and/or characterizing abnormal growths. The method involves applying a set of forces of different magnitudes to one or more locations of tissue, detecting the corresponding displacements due to said applied forces, determining the forces acting on those locations of tissue which are a combination of forces from the applied voltages and the countering forces from tissue deformation, obtaining the elastic modulus and/or shear modulus for a plurality of locations, and determining abnormal growth invasiveness, malignancy or the presence of a tumor from said elastic and/or shear moduli.Type: ApplicationFiled: September 19, 2013Publication date: February 27, 2014Applicants: PHILADELPHIA HEALTH & EDUCATION CORPORATION d/b/a DREXEL UNIVERSITY COLLEGE OF M, DREXEL UNIVERSITYInventors: Wan Y. SHIH, Wei-Heng SHIH, Hakki YEGINGIL, Ari D. BROOKS
-
Patent number: 8562546Abstract: The present invention provides a sensor system for measuring an elastic modulus and a shear modulus and a method for using the sensor system to evaluate a tissue by determining the presence of and/or characterizing abnormal growths. The method involves applying a set of forces of different magnitudes to one or more locations of tissue, detecting the corresponding displacements due to said applied forces, determining the forces acting on those locations of tissue which are a combination of forces from the applied voltages and the countering forces from tissue deformation, obtaining the elastic modulus and/or shear modulus for a plurality of locations, and determining abnormal growth invasiveness, malignancy or the presence of a tumor from said elastic and/or shear moduli.Type: GrantFiled: May 15, 2009Date of Patent: October 22, 2013Assignee: Drexel UniversityInventors: Wan Y. Shih, Wei-Heng Shih, Hakki Yegingil, Ari D. Brooks
-
Patent number: 8549933Abstract: 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: GrantFiled: October 7, 2011Date of Patent: October 8, 2013Assignee: Drexel UniversityInventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szweczyk, Hakki Yegingil
-
Patent number: 8421313Abstract: 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: GrantFiled: January 24, 2012Date of Patent: April 16, 2013Assignee: Drexel UniversityInventors: Wei-Heng Shih, Wan Y. Shih, Hakki Yegingil
-
Publication number: 20120119625Abstract: 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: ApplicationFiled: January 24, 2012Publication date: May 17, 2012Applicant: DREXEL UNIVERSITYInventors: WEI-HENG SHIH, WAN Y. SHIH, HAKKI YEGINGIL
-
Patent number: 8143765Abstract: In one aspect, the invention relates to a headset that includes an element that generates energy in response to forces. The headset includes at least one vibratable piezoelectric element; a first circuit element in electrical communication with the at least one vibratable piezoelectric element; and a signal processing element, the signal processing element disposed within the headset and at least partially energized by mechanical changes in the vibratable piezoelectric element.Type: GrantFiled: January 30, 2009Date of Patent: March 27, 2012Assignee: TBT Group, Inc.Inventors: Hakki Yegingil, John-Paul McGovern, Sabine Ohler, Daniel DeClement, Christian L. Martorano, Huidong Li, Joseph Capobianco, Matthew H. Foster, Richard Martorano
-
Publication number: 20120053489Abstract: 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: ApplicationFiled: October 7, 2011Publication date: March 1, 2012Applicant: DREXEL UNIVERSITYInventors: WAN Y. SHIH, WEI-HENG SHIH, ANNA MARKIDOU, STEVEN T. SZWECZYK, HAKKI YEGINGIL
-
Patent number: 8110964Abstract: 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: GrantFiled: January 29, 2008Date of Patent: February 7, 2012Assignee: Drexel UniversityInventors: Wei-Heng Shih, Wan Y. Shih, Hakki Yegingil
-
Patent number: 8033185Abstract: 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: GrantFiled: July 16, 2010Date of Patent: October 11, 2011Assignee: Drexel UniversityInventors: Wan Y. Shih, Wei-Heng Shih, Anna Markidou, Steven T. Szweczyk, Hakki Yegingil
-
Publication number: 20110172565Abstract: A sensor system for measuring an elastic modulus and a shear modulus and a method for evaluating a tissue. The invention pertains to a method for determining the presence of and/or characterizing abnormal growths, using a piezoelectric finger sensor (PEFS) system. The PEFS system may be particularly useful for screening for tumors and various forms of cancer. Additionally, the PEFS system may be useful for various dermatological applications.Type: ApplicationFiled: May 15, 2009Publication date: July 14, 2011Applicant: DREXEL UNIVERSITYInventors: Wan Y. Shih, Wei-Heng Shih, Hakki Yegingil, Ari D. Brooks