Patents by Inventor Christina L. Semkow

Christina L. Semkow 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 for making a dental impression
    Patent number: 4740159
    Abstract: A method of forming a two step dental impression which comprises applying a light curable impression material to a portion of the oral cavity of interest to form an initial impression while exposing said impression material to a source of activating light to set said impression material followed by applying a chemically cured impression material over said light cured impression material and allowed said chemically cured impression material to set and bond with said light curable material and removing the resulting composite impression from said oral cavity.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: April 26, 1988
    Assignee: Kerr Manufacturing Company
    Inventors: James C. Hamilton, Duncan E. Waller, Christina L. Semkow