Patents by Inventor John W. Hartman

John W. Hartman 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).

  • Patent number: 8090595
    Abstract: The invention describes a system and methods for analyzing and improving business operations. The system includes a plurality of business operations databases that contains a plurality of operational data obtained from a plurality of business organizations. The system provides for flexible user defined input and output of data and information flows that contribute to improving the operational effectiveness and productivity of a business entity. One method defines the process for identifying, analyzing and selecting the existing business process databases and information flows for performance, productivity, cost and organizational improvement. The other method includes the steps of gathering, storing and outputting a plurality of operational data obtained from a plurality of businesses in a flexible and confidential manner for each business entity. This method also includes the de-identifying of the database for a variety of secondary purposes, including research and development.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: January 3, 2012
    Inventor: John W Hartman
  • Patent number: 6441945
    Abstract: An optoelectronic device and method utilizing nanometer-scale particles arranged along a preselected path, each particle being capable of polarization. The particles are spaced apart such that polarization of one of the particles acts to induce polarization in adjacent particles, enabling electromagnetic energy to be transferred, modulated, filtered or otherwise processed by the device. In a specific embodiment, a chain of such particles may be arranged in a configuration having a variety of different angles, sharp corners and junctions, without adversely affecting device efficiency.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: August 27, 2002
    Assignee: California of Technology
    Inventors: Harry A. Atwater, Mark L. Brongersma, John W. Hartman
  • Patent number: 4553049
    Abstract: Integrated circuit logic chips often oscillate during testing because the large unbypassed inductance of the test fixture causes off-chip driver switching noise to be fed back to the logic chip power supply. Oscillation may be prevented by adding an inhibit receiver and an off-chip driver inhibit network to the logic chip. The off-chip driver inhibit network provides a fan out path from the inhibit receiver to each off-chip driver. In response to an inhibit signal applied to the inhibit receiver, the inhibit network forces each of the off-chip drivers to the same logical state, the logic state being the natural logic state assumed by the off-chip drivers upon initial application of power to the chip. The driver inhibit receiver and inhibit network are employed to prevent oscillation at chip power-on, during driver and receiver parametric testing and during input test pattern tests.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: November 12, 1985
    Assignee: International Business Machines Corporation
    Inventors: Charles W. Cha, John W. Hartman, David A. Kiesling, William J. Scarpero, Jr.