Patents by Inventor Carl Irving Schwartz

Carl Irving Schwartz 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).

  • Dental impression tray
    Patent number: 5733118
    Abstract: A dental impression tray contoured to fit over at least a portion of a patient's dentition is provided. The dental impression tray includes a wall portion and an elongate rib adapted to extend along the wall portion. The elongate rib and wall define a channel sufficiently elongate with respect to the portion of the patient's dentition to interfit with an impression material during an impression of the portion of the patient's dentition to hold the impression material more securely in the tray.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: March 31, 1998
    Inventors: John Pankuch, Carl Irving Schwartz