Patents by Inventor Alfred Hämmerle

Alfred Hämmerle 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).

  • Block and method of making
    Patent number: 8025992
    Abstract: The invention relates to a block (10) made of ceramic compounds, in particular dental compounds, of at least one ceramic compound (15) with predetermined first optical properties and at least a second ceramic compound (17) with predetermined second optical properties, and of a transition area between the two ceramic compounds, which transition area is composed of changing mixtures of the at least two ceramic compounds, the variation gradient of the mixtures being substantially constant. The invention further relating to a process for making such a block.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: September 27, 2011
    Assignee: Ivoclar Vivadent AG
    Inventors: Alexander Engels, Alfred Hämmerle