Patents by Inventor John T. O'Neill

John T. O'Neill 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).

  • Noninvasive method for quantitation of oxyhemoglobin saturation by near-infrared reflectance spectrophotometry
    Patent number: 5219400
    Abstract: The degree of hemoglobin oxygenation in the blood vessels of the retina is etermined under conditions of dark-adaptation and light-adaptation by directing a beam of near-infrared light having a range of wavelengths from 700 to 100 nanometers at a blood vessel in the retina, measuring the intensity of the backscattered light from the blood vessel in the range from 700 to 800 nanometers at regularly spaced intervals of wavelength, such as 2 nanometers, and determining the degree of hemoglobin oxygenation by reference to a correlation between hemoglobin oxygen and light absorbance in the near-infrared spectral range.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: June 15, 1993
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Jorge L. Jacot, John T. O'Neill, Lou Reinisch