Patents by Inventor Arthur E. Nace

Arthur E. Nace 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).

  • Methods and apparatus for relatively invariant input-output spectral relationship amplifiers
    Patent number: 9431970
    Abstract: An electronic amplifier delivers to a load an output signal related to an input, typically with increased power. As the power output, volume, or gain of the amplifier is changed, so may the spectral characteristics of the signal. In order to maintain the desired spectral or tonal character of the output signal over the dynamic range of output power, biasing of the amplifier must be adjusted. Particular ratios of drive and bias currents and/or voltages for different implementations of amplifier technologies should be relatively constant to produce substantially invariant input-output spectral relationships from low power output through high power output settings. Several techniques are presented which provide these relationship in amplifiers.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: August 30, 2016
    Assignee: Nace Engineering, Inc.
    Inventor: Arthur E. Nace
  • Methods and apparatus for relatively invariant input-output spectral relationship amplifiers
    Patent number: 9246441
    Abstract: An electronic amplifier delivers to a load an output signal related to an input, typically with increased power. As the power output, volume, or gain of the amplifier is changed, so may the spectral characteristics of the signal. In order to maintain the desired spectral or tonal character of the output signal over the dynamic range of output power, biasing of the amplifier must be adjusted. Particular ratios of drive and bias currents and/or voltages for different implementations of amplifier technologies should be relatively constant to produce substantially invariant input-output spectral relationships from low power output through high power output settings. Several techniques are presented which provide these relationship in amplifiers.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: January 26, 2016
    Assignee: Nace Engineering, Inc.
    Inventor: Arthur E. Nace