Patents by Inventor Roman Etter

Roman Etter 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 for the manufacture of writing instruments
    Patent number: 4003665
    Abstract: A stylus is assembled from a plastic tip having an axial bore and an ink tube in said bore centered therein and welded thereto. Ultrasonic welding is used for softening and partially melting the tip. On switching off the ultrasonic energy source, the molten portion of the tip hardens and provides a strong bond between the tip and the ink tube.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: January 18, 1977
    Assignee: Kern & Co. AG
    Inventors: Hans Dreyer, Roman Etter