Patents by Inventor Carolyn M. Kramer Primus

Carolyn M. Kramer Primus 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 product, shading kit and method
    Patent number: 5906490
    Abstract: The invention provides a kit and method for the preparation of dental products. First, second and third materials are provided in labeled containers. Preferably the first, second and third materials are pastes or powders. The first material has a lightness value (L.sub.1) when formed into a least opaque layer. The second material has a lightness value (L.sub.2) when formed into a less opaque layer. The third material has a lightness value (L.sub.3) when formed into a most opaque layer. The third lightness value is greater than the second lightness value, which is greater than the first lightness value. The lightness value differences between the third lightness value (L.sub.3) and the first lightness value (L.sub.1) are less than 10 CIE L*a*b units.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: May 25, 1999
    Assignee: Ceramco Inc.
    Inventors: Carolyn M. Kramer Primus, Paul D. Hammesfahr