Patents by Inventor John W. Staples

John W. Staples 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).

  • Electrochemical analytical apparatus and method of using the same
    Publication number: 20040040842
    Abstract: The present invention relates to an electrochemical analytical apparatus for analyzing an electrochemical deposition solution, comprising a testing electrode, and a temperature detector attached thereto for monitoring temperature of said testing electrode. Preferably, such temperature detector is a resistance temperature detector.
    Type: Application
    Filed: September 3, 2002
    Publication date: March 4, 2004
    Inventors: Mackenzie E. King, John W. Staples, Joseph W. Evans, Daniel O. Clark, Peter M. Robertson, Thomas B. Chatterton, Thomas Hartford
  • Computer controlled transversal equalizer
    Patent number: 5353244
    Abstract: An adjustable equalizer network has a series chain of N all pass amplifier stages driving N+1 scaling circuits connected to a final summing circuit that includes circuitry to adjust the frequency response at M+1 frequency control points to obtain a predetermined ripple free minimum phase shift frequency response over a given frequency range. The scaling circuits have scaling coefficients, of magnitude and sign determined by Fourier analysis and an appropriate truncation function, such that the filter has a pass band representative of M+1 contiguous bands conjointly encompassing the frequency range. Calculation of the scaling coefficients and control of the scaling circuits is accomplished through digital computation and manipulation. Some embodiments may use passive circuits or linear analogue circuits as scaling circuits, controlled manually or by a computing device.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: October 4, 1994
    Assignee: Knowles Electronics, Inc.
    Inventors: Richard W. Peters, John G. Christopher, John W. Staples
  • Computer controlled transversal equalizer
    Patent number: 5297075
    Abstract: An adjustable equalizer network has a series chain of N all pass amplifier stages driving N+1 scaling circuits connected to a final summing circuit that adjusts the frequency response at M+1 frequency control points to obtain a predetermined ripple free minimum phase shift frequency response over a given frequency range. The scaling circuits have scaling coefficients, of magnitude and sign determined by Fourier analysis and an appropriate truncation function, such that the filter has a pass band representative of M+1 contiguous bands conjointly encompassing the frequency range. Calculation of the scaling coefficients and control of the scaling circuits is accomplished through digital computation and manipulation. Some embodiments may use passive circuits or linear analogue circuits as scaling circuits, controlled manually or by a computing device.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: March 22, 1994
    Assignee: Knowles Electronics, Inc.
    Inventors: Richard W. Peters, John G. Christopher, John W. Staples