Patents by Inventor Joachim Linkemann

Joachim Linkemann 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).

  • Lens inspection
    Patent number: 6765661
    Abstract: The invention enables more objective defect evaluation of ophthalmic lenses, especially contact lenses, to take place through the combination of the schlieren method with the transmitted light method, with the result that the advantages of these two different systems are combined. The schlieren method is in a position to illustrate the edge of a contact lens and its ruptures, in high contrast, for the CCD camera. Likewise, tears and surface defects can be made visible. Using the transmitted light method, the bubbles may be suitably prepared for the camera.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: July 20, 2004
    Assignee: Novartis AG
    Inventors: Roger Biel, Joachim Linkemann, Livio Fornasiero, Ingolf Braune
  • Lens inspection
    Publication number: 20020163638
    Abstract: The invention enables more objective defect evaluation of ophthalmic lenses, especially contact lenses, to take place through the combination of the schlieren method with the transmitted light method, with the result that the advantages of these two different systems are combined. The schlieren method is in a position to illustrate the edge of a contact lens and its ruptures, in high contrast, for the CCD camera. Likewise, tears and surface defects can be made visible. Using the transmitted light method, the bubbles may be suitably prepared for the camera.
    Type: Application
    Filed: March 6, 2002
    Publication date: November 7, 2002
    Inventors: Roger Biel, Joachim Linkemann, Livio Fornasiero, Ingolf Braune