Patents by Inventor Hans J. Lydtin

Hans J. Lydtin 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).

  • Mould with separating layer for the production of glass objects
    Patent number: 4286981
    Abstract: A layer consisting of a grinding medium such as corundum, SiC, emery or quartz sand is provided in a mould for the production of glass objects. A portion of this layer sticks to the glass work piece formed in this mould and is used for a subsequent surface processing procedure.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: September 1, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Rolf Clasen, Hans J. Lydtin