Patents by Inventor Stephan Kagi

Stephan Kagi 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).

  • Process and separating substance for removing a cavity-polymerized inlay consisting of a dental filling composite
    Patent number: 4685969
    Abstract: Process for separating a pre-polymerized composite dental filling, such as an inlay, from the hard substance of the tooth using a separating substance consisting of a sol formed from a substance swollen and dissolved in alcohol and forming an organic or inorganic gel. The separating substance is applied as a separating layer to the cavity prior to introducing the composite into the cavity and this facilitates the removal of the composite after hardening in the cavity. The separating layer is removed from the cavity, and the inlay is then cemented into the cavity after being tempered.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: August 11, 1987
    Assignee: Coltene AG
    Inventors: Adalbert Schmid, Alfons Kiener, Stephan Kagi, Jean P. Claude