Patents by Inventor Hans-Josef Winkeler

Hans-Josef Winkeler 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 for determining the optical quality of flat glass or flat glass products
    Patent number: 5016099
    Abstract: For determining the optical quality of float glass, at an appropriate point on the production line a silhouette is produced on the projection screen of the float glass ribbon. The silhouette is detected by a video camera and evaluated by digital image processing. The luminance profile of the silhouette is determined from the video picture. The refractive power profile is calculated from the luminance profile and is digitally and/or graphically represented and evaluated.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: May 14, 1991
    Assignee: Saint-Gobain Vitrage
    Inventors: Wolfgang Bongardt, Helmut Gowert, Hans-Josef Winkeler, Josef Schneiders