Patents by Inventor Friedrich-Wilhelm Schonheit

Friedrich-Wilhelm Schonheit 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).

  • Smoothing and calibrating of paper
    Patent number: 5060565
    Abstract: The smoothing and calibrating of paper is described which utilizes a calender mechanism, particularly in its application to the production of photographic base paper in a papermaking line, and in which hard cylinders are positioned next to each other in which adjacent cylinders are of different diameters.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: October 29, 1991
    Assignee: Felex Schoeller Jr. GmbH & Co.
    Inventor: Friedrich-Wilhelm Schonheit