Patents by Inventor John Paul Ertl

John Paul Ertl 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 apparatus for brain waveform examination
    Patent number: 4092981
    Abstract: A neural efficiency rating is arrived at by amplifying and band-limiting an EEG waveform of a subject, discarding those parts of the waveform during which alpha rhythm is present, and measuring the average frequency of the remainder of the waveform. By comparing the phases and amplitudes of the waveforms produced by opposite sides of the subject's brain, abnormalities of brain function may be detected, which together with the neural efficiency rating serves to evaluate brain function.
    Type: Grant
    Filed: July 15, 1976
    Date of Patent: June 6, 1978
    Inventor: John Paul Ertl