Patents by Inventor Elliott S. Simons

Elliott S. Simons 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).

  • Apparatus for maintaining signals within a given amplitude range
    Patent number: 4153049
    Abstract: Displayed ECG waveforms are maintained within acceptable aspect ratios without rapid fluctuation in amplitude by rapidly decreasing the gain of the signal channel by discrete amounts as the peak-to-peak amplitude of the ECG signal increases through each of a number of levels and by increasing the gain of the signal channel only after the peak-to-peak amplitude of the ECG signals has dropped to a given fraction for a predetermined period of time.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: May 8, 1979
    Assignee: Hewlett-Packard Company
    Inventors: Ronald D. Gatzke, James L. Larsen, Elliott S. Simons