Patents by Inventor Philip R. Zelson

Philip R. Zelson 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 of diagnosing periodontal disease through the detection of pyridine compounds
    Patent number: 4334540
    Abstract: A novel method of diagnosing periodontal disease is disclosed wherein telltale pyridine and alkyl-pyridine compounds which are detected in the oral cavity are indicative of periodontal disease. An alternate embodiment method is disclosed wherein increased concentrations of certain other compounds are detected to confirm the presence of periodontal disease.
    Type: Grant
    Filed: May 1, 1979
    Date of Patent: June 15, 1982
    Assignee: Monell Chemical Senses Center
    Inventors: George Preti, James G. Kostelc, Philip R. Zelson