Patents by Inventor Roger B. Pelzner

Roger B. Pelzner 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).

  • Patent number: 4522594
    Abstract: A dental handpiece especially for transmitting intense light for use in polymerizing dental materials in situ has a readily removable opaque shield of deformable material affixed to the end thereof to preclude the light from spreading and to prevent inadvertent contact of the handpiece tip with the subjacent area.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: June 11, 1985
    Assignee: Marvin M. Stark Research Foundation
    Inventors: Marvin M. Stark, Kenneth B. Soelberg, Roger B. Pelzner
  • Patent number: 4475370
    Abstract: An apparatus for treating the surface of a dental inlay for a tooth has a cup enclosure with a restricted opening therein. A hollow stem is slidably received in the cup and releasably held in a chosen position. An inlay holder is at the end of the stem within the cup enclosure and in the path of a stream of grit particles projected from the reservoir through a nozzle extending through the opening into proximity with the inlay holder.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: October 9, 1984
    Assignee: Marvin M. Stark Research Foundation
    Inventors: Marvin M. Stark, Kenneth B. Soelberg, Roger B. Pelzner, Mark S. Bogdan
  • Patent number: 4460340
    Abstract: For use in reducing atmospheric contamination by mercury vapor from an amalgam container, there is provided a rigid tube hooked over the rim of the container and open to the interior thereof. The duct is connected through a filter for taking out the noxious material to a vacuum source.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: July 17, 1984
    Assignee: Marvin M. Stark Research Corporation
    Inventors: Marvin M. Stark, Kenneth B. Soelberg, Roger B. Pelzner
  • 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