Patents by Inventor Stephen C. Kuehne

Stephen C. Kuehne 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: 20140095138
    Abstract: A method for checking for reliability problems includes simulating a circuit having at least one MOS transistor that includes a first MOS transistor. Based on the results of this simulation of the circuit, a gate-to-bulk voltage (Vgb) for the first MOS transistor is calculated. A voltage limit based on the length of the channel of the first MOS transistor is selected. If Vgb is greater than the voltage limit, a warning message is generated.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 3, 2014
    Applicant: LSI CORPORATION
    Inventors: Bonnie E. Weir, David Averill Bell, Stephen C. Kuehne
  • Patent number: 7642617
    Abstract: An integrated circuit having an n-channel MOSFET device and a JFET device. The integrated circuit includes a semiconductor layer having an upper surface, an MOS transistor device formed in a doped well of a first conductivity type extending from the semiconductor upper surface and a JFET device. The JFET device includes a channel region in the semiconductor layer spaced from, and having a peak concentration positioned a predetermined distance below, the upper surface. An associated method of manufacturing includes introducing p-type dopant into the semiconductor surface to form a p-well in which the NMOS device is formed and a source and a drain of the JFET device. N-type dopant is introduced into the semiconductor surface to form an n-type region of the NMOS device below the p-well and a gate region of the JFET device.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: January 5, 2010
    Assignee: Agere Systems Inc.
    Inventors: Alan Sangone Chen, Daniel J. Dolan, Jr., David W. Kelly, Daniel Charles Kerr, Stephen C. Kuehne
  • Patent number: 7595951
    Abstract: A (e.g., hard-disk drive (HD)) system supports reader standby mode and/or writer standby mode. For reader standby mode, reader circuitry in the system's preamplifier is transitioned to a low-power mode during write operations. To provide quick transition from write mode to read mode, the reader circuitry is transitioned to pre-read mode before the end of the write operation. For writer standby mode, the preamplifier's writer circuitry is transitioned to a low-power mode during read operations. To provide quick transition from read mode to write mode, the writer circuitry is transitioned to a pre-write mode before the end of the read operation. The availability of a reader standby mode during write operations and a writer standby mode during read operations reduces power consumption as compared to HD systems that leave the reader circuitry in pre-read mode throughout each write operation and the writer circuitry in pre-write mode throughout each read operation.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: September 29, 2009
    Assignee: Agere Systems Inc.
    Inventors: Daniel J. Dolan, David W. Kelly, Stephen C. Kuehne, Nathan M. Rudd, Ross S. Wilson
  • Publication number: 20070279785
    Abstract: A (e.g., hard-disk drive (HD)) system supports reader standby mode and/or writer standby mode. For reader standby mode, reader circuitry in the system's preamplifier is transitioned to a low-power mode during write operations. To provide quick transition from write mode to read mode, the reader circuitry is transitioned to pre-read mode before the end of the write operation. For writer standby mode, the preamplifier's writer circuitry is transitioned to a low-power mode during read operations. To provide quick transition from read mode to write mode, the writer circuitry is transitioned to a pre-write mode before the end of the read operation. The availability of a reader standby mode during write operations and a writer standby mode during read operations reduces power consumption as compared to HD systems that leave the reader circuitry in pre-read mode throughout each write operation and the writer circuitry in pre-write mode throughout each read operation.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 6, 2007
    Inventors: Daniel J. Dolan, David W. Kelly, Stephen C. Kuehne, Nathan M. Rudd, Ross S. Wilson
  • Patent number: 6624039
    Abstract: The present invention provides a semiconductor device including large topography alignment marks, and a method of manufacture therefor. The method of manufacturing the semiconductor device includes forming an isolation trench and an alignment mark in a substrate to a substantially common depth, and forming an etch stop layer in the alignment mark.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: September 23, 2003
    Assignee: Lucent Technologies Inc.
    Inventors: Mahjoub A. Abdelgadir, Stephen C. Kuehne, Alvaro Maury, Scott F. Shive
  • Patent number: 6593195
    Abstract: The memory element of the present invention utilizes a substrate, a first conductive connection, a second conductive connection, and an ionic layer. The substrate includes a source region, a drain region, and a channel region, which is disposed between the source region and the drain region. The ionic layer includes ions and is coupled to the substrate. The first connection is coupled to the source region, and the second connection is coupled to the drain region. An electrical field is applied through said ionic layer such that the ions in the ionic layer move. When the memory element is to exhibit a logical high state, the polarity of the electrical field causes the ions to move toward the channel region. This pulls the electrons in the source and drain regions into the channel region making the channel region conductive. When the memory element is to exhibit a logical low state, the polarity of the electrical field causes the ions to move away from the channel region.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: July 15, 2003
    Assignee: Agere Systems INC
    Inventors: Xiaojun Deng, Isik C. Kizilyalli, Stephen C. Kuehne
  • Patent number: 6372605
    Abstract: During formation of shallow-trench isolation (STI) structures during semiconductor processing, an additional oxide-reduction etching step is performed prior to chemical-mechanical processing. In one implementation wet-etching and/or sputter etch-back (SEB) is performed prior to applying a reverse-tone mask. In another implementation a wet etching step is performed after the reverse-tone mask is stripped. One significant result of each of these steps is a reduction in the height and width of at least some of the oxide horns that remain after the reverse-tone mask is stripped. As such, the oxide structures that need to be planarized during CMP will be smaller than those of the prior art. Moreover, since the resulting oxide structures that need to be planarized by CMP processing are smaller, the oxide layer can be initially applied at a smaller thickness than that of the prior art.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: April 16, 2002
    Assignee: Agere Systems Guardian Corp.
    Inventors: Stephen C. Kuehne, Alvaro Maury, Scott F. Shive