Patents by Inventor William D. Standbro

William D. Standbro 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).

  • Localization of cancerous tissue by monitoring infrared fluorescence emitted by intravenously injected porphyrin tumor-specific markers excited by long wavelength light
    Patent number: 4541438
    Abstract: An improved apparatus and method for optically localizing cancer lesions occluded beneath healthy tissue layers. A porphyrin tumor-specific marker is injected into a patient. After several days the healthy tissue has released the tumor-specific marker but the cancerous tissue has retained the tumor-specific marker. A long wavelength red excitation light illuminates an area of tissue and excites the porphyrin tumor-specific marker to fluorescence. An optical detection means monitors fluorescent emissions in the near infrared band and locates the source of the emissions.
    Type: Grant
    Filed: June 2, 1983
    Date of Patent: September 17, 1985
    Assignee: The Johns Hopkins University
    Inventors: John G. Parker, William D. Standbro