Patents by Inventor George E. Graddy, Jr.

George E. Graddy, Jr. 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: 20220225501
    Abstract: Conductive thick film compositions compatible to aluminum nitride, alumina and silicon nitride substrates for microelectronic circuit application. The conductive thick film composition includes first copper powder, second copper powder, and glass component. The conductive thick film composition further includes CU2O, Ag, and at least one metal element selected from Ti, V, Zr, Mn, Cr, Co, and Sn. After firing, the conductive thick film composition exhibit improved sheet resistivity, and improved adhesion with underlying substrate.
    Type: Application
    Filed: September 6, 2019
    Publication date: July 14, 2022
    Inventors: Umesh Kumar, John J. Maloney, Bradford Smith, Ponnusamy Palanisamy, Srinivasan Sridharan, George E. Sakoske, Jr., George E. Graddy, Jr.
  • Patent number: 9892853
    Abstract: LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a matrix of titanates of alkaline earth metals, the matrix doped with at least one selected from rare-earth element, aluminum oxide, silicon oxide and bismuth oxide.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: February 13, 2018
    Assignee: Ferro Corporation
    Inventors: Walter J. Symes, Jr., Gregory R. Prinzbach, John J. Maloney, James E. Henry, Orville W. Brown, Srinivasan Sridharan, Yie-Shein Her, Stanley Wang, George E. Graddy, Jr., George E. Sakoske
  • Patent number: 9824790
    Abstract: Paste compositions, methods of making a paste composition, photovoltaic cells, and methods of making a photovoltaic cell contact are disclosed. The paste composition can include a conductive metal component such as aluminum, phosphate glass, phosphorus compounds such as alky! phosphate, and a vehicle. The contact can be formed on a passivation layer on a silicon wafer by applying the paste on the passivation layer and firing the paste. During firing, the metal component can fire through the passivation layer, thereby electrically contacting the silicon substrate.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: November 21, 2017
    Assignee: Heraeus Precious Metals North America Conshohocken LLC
    Inventors: Dongshe Zhang, Aziz S. Shaikh, Srinivasan Sridharan, Himal Khatri, Hong Jiang, George E. Graddy, Jr.
  • Patent number: 9776911
    Abstract: High thermal conductivity dielectric materials systems or pastes are useful on aluminum alloy substrates for LED and high power circuitry applications.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: October 3, 2017
    Assignee: Ferro Corporation
    Inventors: Srinivasan Sridharan, Orville W. Brown, George E. Graddy, Jr.
  • Publication number: 20170194515
    Abstract: A dielectric coating material system for use in a single-sided back contact solar cell is disclosed. The material system serves to electrically isolate electrodes of opposite polarity types on the same side of a silicon-based solar call, and includes titanium and phosphorus.
    Type: Application
    Filed: September 30, 2014
    Publication date: July 6, 2017
    Inventors: Ben E. Cruz, George E. Graddy, JR., Aziz S. Shaikh, Jalal Salami
  • Publication number: 20170110246
    Abstract: LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a matrix of titanates of alkaline earth metals, the matrix doped with at least one selected from rare-earth element, aluminum oxide, silicon oxide and bismuth oxide.
    Type: Application
    Filed: June 12, 2015
    Publication date: April 20, 2017
    Inventors: Walter J. Symes, JR., Gregory R. Prinzbach, John J. Maloney, James E. Henry, Orville W. Brown, Srinivasan Sridharan, Yie-Shein Her, Stanley Wang, George E. Graddy, JR., George E. Sakoske
  • Publication number: 20160185651
    Abstract: High thermal conductivity dielectric materials systems or pastes are useful on aluminum alloy substrates for LED and high power circuitry applications.
    Type: Application
    Filed: October 6, 2014
    Publication date: June 30, 2016
    Inventors: Srinivasan Sridharan, Orville W. Brown, George E. Graddy, JR.
  • Publication number: 20150020881
    Abstract: A dielectric coating material system for use in a single-sided back contact solar cell is disclosed. The material system serves to electrically isolate electrodes of opposite polarity types on the same side of a silicon-based solar call, and includes titanium and phosphorus.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 22, 2015
    Inventors: Ben E. Cruz, George E. Graddy, JR., Aziz S. Shaikh, Jalal Salami
  • Publication number: 20150007881
    Abstract: This invention relates an aluminum conductor paste formulation and its method of application on rear side passivated locally opened vias; dot or line geometry or combination thereof employing laser ablation or chemical etching methods. Such Back Surface Passivated Si-solar cells include dielectric layers of Al203, SiNx, Si02, SiC, ?-Si, Si02/SiNx, Al203/SiNx, Si02/Al203/SiNx. The Al-conductor paste of this invention achieves; (i) non-degradation of passivation stack, (ii) defect free surfaces and void free vias, (iii) a strong and uniform Back Surface Field (BSF) layer within dot vias and line vias.
    Type: Application
    Filed: January 11, 2013
    Publication date: January 8, 2015
    Inventors: Chandrashekhar S Khadilkar, Himal Khatri, Srinivasan Sridharan, George E. Graddy, JR., Aziz S. Shaikh, Nazarali Merchant
  • Publication number: 20140373909
    Abstract: Paste compositions, methods of making a paste composition, photovoltaic cells, and methods of making a photovoltaic cell contact are disclosed. The paste composition can include a conductive metal component such as aluminum, phosphate glass, phosphorus compounds such as alky! phosphate, and a vehicle. The contact can be formed on a passivation layer on a silicon wafer by applying the paste on the passivation layer and firing the paste. During firing, the metal component can fire through the passivation layer, thereby electrically contacting the silicon substrate.
    Type: Application
    Filed: August 16, 2012
    Publication date: December 25, 2014
    Applicant: Heraeus Precious Metals North America Conshohocken LLC
    Inventors: Dongshe Zhang, Aziz S. Shaikh, Srinivasan Sridharan, Himal Khatri, Hong Jiang, George E. Graddy, JR.
  • Publication number: 20140332067
    Abstract: The present invention is directed toward a via fill material for use in solar applications that exhibits low series resistance and high shunt resistance. The via fill material according to the invention includes silver powder, a glass frit and a vehicle.
    Type: Application
    Filed: September 1, 2011
    Publication date: November 13, 2014
    Inventors: George E. Graddy, JR., Caroline M. McKinley, Aziz S. Shaikh
  • Patent number: 8876963
    Abstract: A dielectric coating material system for use in a single-sided back contact solar cell is disclosed. The material system serves to electrically isolate electrodes of opposite polarity types on the same side of a silicon-based solar cell, and includes titanium and phosphorus.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: November 4, 2014
    Assignee: Heraeus Precious Metals North America Conshohocken LLC
    Inventors: Ben E. Cruz, George E. Graddy, Jr., Aziz S. Shaikh, Jalal Salami
  • Publication number: 20120006393
    Abstract: A dielectric coating material system for use in a single-sided back contact solar cell is disclosed. The material system serves to electrically isolate electrodes of opposite polarity types on the same side of a silicon-based solar cell, and includes titanium and phosphorus.
    Type: Application
    Filed: October 16, 2008
    Publication date: January 12, 2012
    Applicant: FERRO CORPORATION
    Inventors: Ben E. Cruz, George E. Graddy, Jr., Aziz S. Shaikh, Jalal Salami