Patents by Inventor Edward N. Yousif

Edward N. Yousif 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 night guard
    Patent number: 5103838
    Abstract: A dental guard is provided with a two layer construction wherein a soft layer is bonded to a hard layer. The soft layer makes contact with the user's upper set of teeth while the hard layer forms the exterior of the dental guard. The soft layer provides a dental guard which is comfortable to wear and less stressful on the user's teeth while the hard layer provides the desired durability.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: April 14, 1992
    Inventor: Edward N. Yousif