Patents by Inventor Marianne Semjen

Marianne Semjen 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).

  • Glass-ceramic plates and methods of fabricating them
    Patent number: 6942920
    Abstract: The invention relates to glass-ceramic plates, hotplates incorporating them and their fabrication process. The glass-ceramic plate of the invention is of the type having a bottom substrate layer and a top coating layer and is characterized in that the top coating layer covers at least the external top surface of the bottom glass-ceramic layer and is a layer of a hard substrate material chosen from the group constituted by silicon carbide, silicon oxycarbide, silicon nitride, silicon oxynitride and hydrogenated amorphous carbons. The invention finds an application in the fabrication of coated glass-ceramic plates and in particular in the fabrication of glass-ceramic hotplates.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: September 13, 2005
    Assignee: Eurokera
    Inventors: Alain R. E. Carre, Celine C. Guermeur, Marianne Semjen
  • Glass-ceramic plates, hotplates comprising them, and methods of fabricating them
    Publication number: 20030215642
    Abstract: The invention relates to glass-ceramic plates, hotplates incorporating them and their fabrication process. The glass-ceramic plate of the invention is of the type having a bottom substrate layer and a top coating layer and is characterized in that the top coating layer covers at least the external top surface of the bottom glass-ceramic layer and is a layer of a hard substrate material chosen from the group constituted by silicon carbide, silicon oxycarbide, silicon nitride, silicon oxynitride and hydrogenated amorphous carbons. The invention finds an application in the fabrication of coated glass-ceramic plates and in particular in the fabrication of glass-ceramic hotplates.
    Type: Application
    Filed: December 11, 2002
    Publication date: November 20, 2003
    Inventors: Alain R. E. Carre, Celine C. Guermeur, Marianne Semjen