Patents by Inventor Yang Yuanlong

Yang Yuanlong 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).

  • Detection of cancer and precancerous conditions in tissues and/or cells using native fluorescence excitation spectroscopy
    Patent number: 6091985
    Abstract: A method of detecting cancer or precancerous conditions in a tissue or cell using fluorescence excitation spectroscopy. According to one embodiment of the method, a tissue is tested for cancer or a precancerous condition by exciting the tissue with substantially monochromatic light at 268 nm and then at 289 nm, with the resultant native fluorescence emitted from the tissue following each excitation being measured. A ratio of the fluorescence intensities, e.g., I.sub.289 /I.sub.268, is then calculated. If I.sub.289 /I.sub.268 is greater than 1.5, the tissue is cancerous or precancerous whereas if I.sub.289 /I.sub.268 is less than 1.5, the tissue is not cancerous or precancerous.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: July 18, 2000
    Assignee: Research Foundation of City College of New York
    Inventors: Robert R. Alfano, Singaravelu Ganesan, Alvin Katz, Yang Yuanlong