Patents Represented by Attorney, Agent or Law Firm Robert P. Lenart
  • Patent number: 8333879
    Abstract: A composition for use in electrodeposition includes a resin blend, a coalescing solvent, a catalyst, water, and a highly cross-linked microgel, wherein at least 20 percent by weight of resin solids in the composition is the highly cross-linked microgel. Another composition for use in electrodeposition includes a surfactant blend, a low ion polyol, phenoxypropanol, a catalyst, water, a flexibilizer, and a highly cross-linked microgel, wherein at least 20 percent by weight of resin solids in the composition is the highly cross-linked microgel.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: December 18, 2012
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Kelly L. Moore, Michael J. Pawlik, Michael G. Sandala, Craig A. Wilson
  • Patent number: 8258411
    Abstract: A circuit board includes an electrically conductive sheet having an insulative coating surrounding the conductive sheet, with a surface of the insulative coating around an edge of the conductive sheet having an arcuate or rounded shape. At least one electrical conductor is conformally deposited on at least the rounded insulative coating around the edge of the conductive sheet and defined via photolithographic and metallization techniques. Each electrical conductor on the insulative coating thereon around the edge of the conductive sheet conforms to the arcuate or rounded shape of the insulative coating and, therefore, has an arcuate or rounded shape.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: September 4, 2012
    Assignee: PPG Industries Ohio, Inc
    Inventors: Alan E. Wang, Kevin C. Olson
  • Patent number: 8141245
    Abstract: A circuit board or each circuit board of a multi-layer circuit board includes an electrically conductive sheet coated with an insulating top layer covering one surface of the conductive sheet, an insulating bottom layer covering another surface of the conductive sheet and an insulating edge layer covering an edge of the conductive sheet. An insulating interlayer can be sandwiched between a pair of adjacent circuit boards of a multi-layer circuit board assembly. A landless through-hole or via can extend through one or more of the circuit boards for connecting electrical conductors on opposing surfaces thereof.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: March 27, 2012
    Assignee: PPG Industries Ohio, Inc
    Inventors: Kevin C. Olson, Alan E. Wang, Peter Elenius, Thomas W. Goodman
  • Patent number: 8065795
    Abstract: Processes for fabricating a multi-layer circuit assembly and a multi-layer circuit assembly fabricated by such processes are provided. The process includes (a) providing a substrate at least one area of which comprises a plurality of vias, these area(s) having a via density of 500 to 10,000 holes/square inch (75 to 1550 holes/square centimeter); (b) applying a dielectric coating onto all exposed surfaces of the substrate to form a conformal coating thereon; and (c) applying a layer of metal to all surfaces of the substrate. Additional processing steps such as circuitization may be included.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: November 29, 2011
    Assignee: PPG Industries Ohio, Inc
    Inventors: Kevin C. Olson, Alan G. Wang
  • Patent number: 8057654
    Abstract: A method includes: immersing a semiconductive substrate in an electrodeposition composition, wherein at least 20 percent by weight of resin solids in the composition is a highly cross-linked microgel component, and applying a voltage between the substrate and the composition to form a dielectric coating on the substrate. A composition for use in electrodeposition includes a resin blend, a coalescing solvent, a catalyst, water, and a highly cross-linked migrogel, wherein at least 20 percent by weight of resin solids in the composition is the highly cross-linked microgel. Another composition for use in electrodeposition includes a surfactant blend, a low ion polyol, phenoxypropanol, a catalyst, water, a flexibilizer, and a highly cross-linked migrogel, wherein at least 20 percent by weight of resin solids in the composition is the highly cross-linked microgel.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: November 15, 2011
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Kelly L. Moore, Michael J. Pawlik, Michael G. Sandala, Craig A. Wilson
  • Patent number: 8008188
    Abstract: A method is provided comprising: coating an electrically conductive core with a first removable material, creating openings in the first removable material to expose portions of the electrically conductive core, plating a conductive material onto the exposed portions of the electrically conductive core, coating the conductive material with a second removable material, removing the first removable material, electrophoretically coating the electrically conductive core with a dielectric coating, and removing the second removable material.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: August 30, 2011
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Kevin C. Olson, Alan E. Wang
  • Patent number: 6985050
    Abstract: A tunable phase shifter includes a waveguide, a finline substrate positioned within the waveguide, a tunable dielectric layer positioned on the finline substrate, a first conductor positioned on the tunable dielectric layer, and a second conductor positioned on the tunable dielectric layer, with the first and second conductors being separated to form a gap. By controlling a voltage applied to the tunable dielectric material, the phase of a signal passing through the waveguide can be controlled.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: January 10, 2006
    Assignee: Paratek Microwave, Inc.
    Inventors: Louise C. Sengupta, Andrey Kozyrev
  • Patent number: 6954118
    Abstract: A phase shifter includes a substrate, a tunable dielectric film having a dielectric constant between 70 to 600, a tuning range of 20 to 60%, and a loss tangent between 0.008 to 0.03 at K and Ka bands positioned on a surface of the substrate, a coplanar waveguide positioned on a surface of the tunable dielectric film opposite the substrate, an input for coupling a radio frequency signal to the coplanar waveguide, an output for receiving the radio frequency signal from the coplanar waveguide, and a connection for applying a control voltage to the tunable dielectric film. A reflective termination coplanar waveguide phase shifter including a substrate, a tunable dielectric film having a dielectric constant between 70 to 600, a tuning range of 20 to 60%, and a loss tangent between 0.008 to 0.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: October 11, 2005
    Assignee: Paratek Microwave, Inc.
    Inventors: Andrey Kozyrev, Louise Sengupta, Youngfei Zhu
  • Patent number: 6876279
    Abstract: A tunable dielectric structure includes a first layer of dielectric material, a second layer of dielectric material positioned adjacent to the first layer of dielectric material, with the second layer of dielectric material having a dielectric constant that is less than the dielectric constant of the first layer of dielectric material, and electrodes for applying a controllable voltage across the first dielectric material, thereby controlling a dielectric constant of the first dielectric material, wherein at least one of the electrodes is positioned between the first and second layers of dielectric material. The dielectric materials can be formed in various shapes and assembled in various orientations with respect to each other. The tunable dielectric structure is used in various devices including coaxial cables, cavity antennas, microstrip lines, coplanar lines, and waveguides.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: April 5, 2005
    Assignee: Paratek Microwave, Inc.
    Inventors: Louise Sengupta, Steven C. Stowell, Yongfei Zhu, Somnath Sengupta, Luna H. Chiu, Xubai Zhang
  • Patent number: 6864840
    Abstract: A phased array antenna includes a plurality of radiating elements, a feed line assembly, a ground plane positioned between the plurality of radiating elements and the feed line assembly, with the ground plane having a plurality of openings positioned between the plurality of radiating elements and the feed line assembly, and a plurality of voltage tunable dielectric phase shifters coupled to the feed line assembly.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: March 8, 2005
    Assignee: Paratek Microwave, Inc.
    Inventors: Yongfei Zhu, Louise C. Sengupta, Andrey Kozyrev, Xubai Zhang
  • Patent number: 6864757
    Abstract: An impedance matching circuit includes a conductor line having an input port and an output port, a ground conductor, a tunable dielectric material positioned between a first section of the conductor line and the ground conductor, a non-tunable dielectric material positioned between a second section of the conductor line and the ground conductor, and means for applying a DC voltage between the conductor line and the ground conductor. The impedance matching circuit may alternatively include a first planar ground conductor, a second planar ground conductor, a strip conductor having an input port and an output port, and positioned between the first and second planar ground conductors to define first and second gaps, the first gap being positioned between the strip conductor and the first planar ground conductor and the second gap being positioned between the strip conductor and the second planar ground conductor.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: March 8, 2005
    Assignee: Paratek Microwave, Inc.
    Inventors: Cornelis Frederik du Toit, Deirdre A. Ryan
  • Patent number: 6835464
    Abstract: A perpendicular exchange biased device comprises a layer of buffer material on a surface of a substrate, a layer of ferromagnetic material on a surface of the buffer layer, wherein the magnetization of the ferromagnetic layer lies in a direction perpendicular to the plane of the layer of ferromagnetic material, and a layer of antiferromagnetic material on a surface of the layer of ferromagnetic material. A method of making a perpendicular exchange biased device comprising positioning a layer of buffer material on a surface of a substrate, positioning a layer of ferromagnetic material on a surface of the layer of buffer material, wherein the magnetization of the ferromagnetic layer lies in a direction perpendicular to the plane of the layer of ferromagnetic material, and positioning a layer of antiferromagnetic material on a surface of the layer of ferromagnetic material is also included.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: December 28, 2004
    Assignee: Seagate Technology LLC
    Inventors: Thomas F. Ambrose, Timothy John Klemmer, Rene Johannes Marinus van de Veerdonk, Gregory John Parker, James K. Howard
  • Patent number: 6809901
    Abstract: A write pole for a magnetic recording head, such as a perpendicular magnetic recording head, includes a first layer of material adjacent a second layer of material. In one embodiment, the first layer of material has a saturation magnetic moment less than about 1.0 T and the second layer of material has a saturation magnetic moment greater than the saturation magnetic moment of the first layer of material. The first layer of material may include (NiFe)100−yXy, wherein X comprises Cr, Cu and/or Ti and wherein y is in the range of about 2 to about 50.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: October 26, 2004
    Assignee: Seagate Technology LLC
    Inventor: Michael K. Minor
  • Patent number: 6809900
    Abstract: A write head for a disk drive includes a first layer of magnetic material having a fixed magnetization aligned in a first direction, a second layer of magnetic material having a changeable magnetization aligned in a quiescent state in a second direction orthogonal to the first direction, a first non-magnetic layer positioned between the first layer of magnetic material and the second layer of magnetic material, electrodes for connection to a current supply for passing an electric current through the first layer of magnetic material, the first non-magnetic layer, and the second layer of magnetic material for switching the changeable magnetization of the second layer, and an arm for positioning a first edge of the second layer of magnetic material adjacent to a magnetic recording medium, whereby the magnetization of the second layer of magnetic material affects magnetization of the magnetic recording medium.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: October 26, 2004
    Assignee: Seagate Technology LLC
    Inventor: Mark William Covington
  • Patent number: 6801104
    Abstract: A voltage-controlled tunable filter includes at least two cavity resonators electrically coupled to each other. A voltage tunable dielectric capacitor is positioned within each of the resonators. Connections are provided for applying a control voltage to the voltage tunable dielectric capacitors. An input is coupled to the one of the resonators, and an output is coupled to the other resonator.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: October 5, 2004
    Assignee: Paratek Microwave, Inc.
    Inventors: Yongfei Zhu, Yu Rong, Kenneth Hersey, Khosro Shamsaifar, Ernest Ekelman, Louise Sengupta
  • Patent number: 6798849
    Abstract: A method for pre-compensating an analog signal in a composite digital audio broadcasting signal including the analog signal and a plurality of digitally modulated sub-carrier signals, the method comprising the steps of sampling the analog signal to obtain successive blocks of samples, demodulating each of the blocks of samples to obtain a plurality of demodulator outputs, remodulating the demodulator outputs that correspond to the predetermined ones of the digitally modulated sub-carrier signals to produce an error signal, subtracting the error signal from the one of the blocks of samples to produce a pre-compensated block of samples, and combining the pre-compensated block of samples with a plurality of OFDM pulses to produce a compensated composite signal. An apparatus for performing the method is also included.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: September 28, 2004
    Assignee: iBiquity Digital Corporation
    Inventors: Brian William Kroeger, Joseph Bertram Bronder
  • Patent number: 6794960
    Abstract: A tunable dielectric structure includes a first layer of dielectric material, a second layer of dielectric material positioned adjacent to the first layer of dielectric material, with the second layer of dielectric material having a dielectric constant that is less than the dielectric constant of the first layer of dielectric material, and electrodes for applying a controllable voltage across the first dielectric material, thereby controlling a dielectric constant of the first dielectric material, wherein at least one of the electrodes is positioned between the first and second layers of dielectric material. The dielectric materials can be formed in various shapes and assembled in various orientations with respect to each other. The tunable dielectric structure is used in various devices including coaxial cables, cavity antennas, microstrip lines, coplanar lines, and waveguides.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: September 21, 2004
    Assignee: Paratek Microwave, Inc.
    Inventors: Luna H. Chiu, Yongfei Zhu, Xubai Zhang, Steven C. Stowell, Andrey Kozyrev, Somnath Sengupta, Louise Sengupta
  • Patent number: 6795630
    Abstract: An apparatus for producing a small spot of optical energy comprises a planar waveguide shaped to direct a linearly polarized electromagnetic wave to a focal point within the waveguide, and a metallic pin positioned at the focal point whereby the linearly polarized electromagnetic wave creates surface plasmons on a surface of the pin. The apparatus can further comprise means for phase shifting a portion of the linearly polarized electromagnetic wave. Recording heads comprising a magnetic write pole, a planar waveguide positioned adjacent to the magnetic write pole, the planar waveguide being shaped to direct a linearly polarized electromagnetic wave to a focal point within the waveguide, and a metallic pin positioned at the focal point whereby the linearly polarized electromagnetic wave creates surface plasmons on a surface of the pin, and disc drives that use such recording heads are also disclosed.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: September 21, 2004
    Assignee: Seagate Technology LLC
    Inventors: William Albert Challener, Christophe Daniel Mihalcea, Tim Rausch
  • Patent number: 6794950
    Abstract: A waveguide to microstrip T-junction includes a microstrip transmission line structure having a ground plane separated from a strip conductor by a dielectric layer, the ground plane defining an aperture; a waveguide channel having a conductive periphery being electrically coupled to the ground plane to provide a waveguide short circuit wall located at the end of the waveguide channel; at least one conducting ridge inside the waveguide channel; and an end of the ridge being electrically coupled with the ground plane.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: September 21, 2004
    Assignee: Paratek Microwave, Inc.
    Inventors: Cornelis Frederik du Toit, Mangipudi Ramesh
  • Patent number: 6785092
    Abstract: A write head for writing information bits to magnetic storage media includes a first write pole for producing a first magnetic field in a first direction and a second write pole for producing a second magnetic field such that the combined field from the two poles lies either substantially along the first direction or in a second direction that is substantially orthogonal to the first direction. The second write pole includes a free layer having magnetization controlled by spin transfer torque, and a first spacer positioned between the free layer and the first write pole. The write head can further include a pinned layer and a second spacer positioned between the pinned layer and the free layer. A disc drive that includes the write head and a method of writing to magnetic storage media that utilizes the write head are also included.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: August 31, 2004
    Assignee: Seagate Technology LLC
    Inventors: Mark William Covington, Thomas McLendon Crawford, Gregory John Parker, Petrus Antonius Van der Heijden