Patents by Inventor Andreas Grutzner

Andreas Grutzner 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).

  • Hue and lightness identification system for dental products
    Patent number: 5662472
    Abstract: A system for identification of hue and lightness of dental products formed from dental material within enclosures comprises an alpha series of at least three caps (A) having an alpha cap hue and supported by enclosures enclosing dental materials which are polymerizable to form an alpha series of dental products having an alpha product hue. The system includes a beta series of at least three caps (B) having a beta cap hue supported by enclosures enclosing dental materials which are polymerizable to form dental products having a beta product hue. The system includes a first series of at least three caps (1) having a first cap lightness and each of said first caps being supported by an enclosure enclosing a dental material which is polymerizable to form a dental product having a first product lightness.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: September 2, 1997
    Assignee: Dentsply GmbH
    Inventor: Andreas Grutzner