Patents by Inventor Eberhard Weil

Eberhard Weil 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 of forming dental restorations
    Patent number: 5284443
    Abstract: A canal in a tooth is reinforced by forming a lining within the canal. The canal is reamed to a desired size and depth. A light transmitting mandrel is next inserted into the canal and seated in the reamed-out area. A light curable composite is placed around the mandrel. Alternatively, the mandrel is withdrawn, the canal is filled with a light curable composite, and the mandrel is reinserted through the composite into the canal. Thereafter, light is shined on the mandrel to cure the composite. When cured, the mandrel is withdrawn to expose a precise canal in the composite lining.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: February 8, 1994
    Assignee: Coltene/Whaledent, Inc.
    Inventor: Eberhard Weil
  • Active/passive dental posts
    Patent number: 5073112
    Abstract: A dental post for securely retaining a dental restoration in a prepared tooth stub. The dental post is formed of an elongated cylindrical rod having an active threaded portion and a passive portion. The dental post is threadedly engaged with a sleeve secured in the tooth stub, which sleeve has at least an active threaded portion.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: December 17, 1991
    Assignee: Coltene/Whaledent
    Inventor: Eberhard Weil