Patents by Inventor Heinz Martens

Heinz Martens 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).

  • Test for evaluation of visual functioning in visually impaired subjects
    Patent number: 5146927
    Abstract: A method of determining the functional integrity of the visual system (including the photoreceptive elements, the retino-hypothalamic tracts and their connections to the suprachiasmatic nuclei of the hypothalamus) of visually imparied human beings. The method includes measuring the melatonin content in blood samples taken before, during and after application of a stimulus (e.g. light) to the subject's retinas, and comparing the measured melatonin content to determine if the melatonin content was suppressed during application of the stimulus.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: September 15, 1992
    Assignee: Brigham and Women's Hospital
    Inventors: Charles A. Czeisler, Heinz Martens, Theresa L. Shanahan