Patents by Inventor Jack B. Rosenfeld

Jack B. Rosenfeld 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 and apparatus for measuring the sensitivity of teeth
    Patent number: 4164214
    Abstract: A dental apparatus for measuring the sensitivity of teeth. The apparatus includes an electrode probe for contacting a tooth and an electrical lead for forming a complete circuit with the probe through the tooth. Electrical energy is applied to the tooth in varying amounts; the apparatus measures and records the quantitative magnitude of a parameter proportional to the effective electrical energy applied to the tooth.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: August 14, 1979
    Assignee: The Regents of the University of California
    Inventors: Marvin M. Stark, Jack B. Rosenfeld, Roger B. Pelzner, Kenneth B. Soelberg