Patents by Inventor David Heminger

David Heminger 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).

  • Filter having integrated floating capacitor and transient voltage suppression structure and method of manufacture
    Patent number: 7589392
    Abstract: In one embodiment, a filter structure that integrates one plate of a capacitor with an electrode of a transient voltage device. The filter structure includes a well region of one conductivity type formed in semiconductor substrate of an opposite conductivity type. The well region forms one plate of the capacitor and an electrode of the transient voltage suppression device. A dielectric layer is formed over a portion of the well region and a conductive layer is formed overlying the dielectric layer to provide a second plate of the capacitor. The dopant concentration of the well region provides a constant capacitance/voltage characteristic for the filter structure when a selected voltage range is applied to plates of the capacitor.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: September 15, 2009
    Assignee: Semiconductor Components Industries, L.L.C.
    Inventors: Sudhama Shastri, Ryan Hurley, David Heminger, Yenting Wen, Mark A. Thomas
  • Filter having integrated floating capacitor and transient voltage suppression structure and method of manufacture
    Publication number: 20070290297
    Abstract: In one embodiment, a well region of one conductivity type is formed in semiconductor substrate of an opposite conductivity type. The well region forms one plate of a floating capacitor and an electrode of a transient voltage suppression device.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 20, 2007
    Inventors: Sudhama Shastri, Ryan Hurley, David Heminger, Yenting Wen, Mark A. Thomas
  • Current regulator and method therefor
    Publication number: 20070024259
    Abstract: In one embodiment, a current regulator is configured to form a first signal representative of a current flow through a power switch and to use the first signal to determine an off-time of the power switch.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 1, 2007
    Inventors: Alan Ball, David Heminger
  • Method for manufacturing nails
    Patent number: 5033181
    Abstract: Nails suitable for outdoor use, such as, for example, roofing nails, are formed from carbon steel wire precoated with a metallic layer, which has corrosion-resistant properties, such as, for example, a zinc layer applied by pre-galvanizing the stock carbon steel wire. Each nail is formed with a shank and with a head. The metallic layer is discontinuous within a region formed upon the head of each nail. The nails are collated by means of collating wires welded to the shanks of the nails. The collated nails are coiled. The coiled nails are cleaned in a cleaning bath, such as, for example, 1,1,trichloroethane. The cleaned nails are coated with a polymeric layer, which covers the region of the head of each nail where the metallic layer is discontinuous, thus restoring the corrosion-resistant properties of the nails.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: July 23, 1991
    Assignee: Illinois Tool Works Inc.
    Inventors: Geronimo Lat, William L. Gabriel, David Heminger, Lawrence S. Shelton