Patents Assigned to Rosenthal AG
  • Silicon nitride-containing material with self-glazing surface and process for its production
    Patent number: 4104442
    Abstract: The invention concerns a silicon nitride-containing material with a gas-tight surface and improved oxidation resistance, and the invention also relates to a process for the production of such material.
    Type: Grant
    Filed: March 23, 1976
    Date of Patent: August 1, 1978
    Assignee: Rosenthal AG
    Inventor: Godehard Sussmuth
  • Plate
    Patent number: D296746
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: July 19, 1988
    Assignee: Rosenthal AG Rechtsabteilung
    Inventor: Bjorn Wiinblad