Patents by Inventor Roland Holloman

Roland Holloman 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).

  • Method and device for testing for audio induced sympathetic buzzes
    Patent number: 5491753
    Abstract: A pre-recorded test tape or test disk which is used to isolate unwanted buzzes in an audio listening environment. The prerecording is a series of varying amplitude frequency sweeps. The frequency sweeps from the audible range of 20 Hz. to 400 Hz., while the amplitude level is set at five different levels. The amplitude of the first sweep is set to the maximum output of the audio system which will give a clean 400 Hz. pre-recorded pallet tone. Each subsequent sweep is 6 dB down from the previous sweep.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: February 13, 1996
    Assignee: Chrysler Corporation
    Inventors: James E. Van Hout, David J. Madaj, Roland Holloman, Philip A. Kuyava