Patents by Inventor Harry Ernest Rubens

Harry Ernest Rubens 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).

  • Permanent coloring coat for natural teeth
    Patent number: 4021915
    Abstract: The method of changing the entire buccal surface area of a tooth, which comprises applying a layer of glue to the entire buccal area of the tooth and thereafter blowing powdered particles having the desired color, on the buccal surface, said glue being sufficiently tenacious to permanently lock said particles to the glue, and said particles having a hardness approaching that tooth enamel.
    Type: Grant
    Filed: August 13, 1974
    Date of Patent: May 10, 1977
    Inventor: Harry Ernest Rubens