Patents by Inventor Dietmar Wennemann

Dietmar Wennemann 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).

  • Publication number: 20020084263
    Abstract: The cooking unit has a glass-ceramic panel (1) providing a cooking surface, which is made of transparent colorless glass-ceramic bulk material or a glass panel made of pre-stressed transparent colorless glass material. Radiant heating elements (3) are provided under the glass or glass-ceramic panel, which heat respective cooking zones. The glass or glass-ceramic panel has a full surface decorative coating (7) on its upper side, which makes dirt and usage marks less conspicuous, and an IR permeable coating (6) having a solid or plain color, preferably bisque-like, on its underside. The IR permeable coating having the solid or plain color prevents an observer from viewing the internal components of the cooking unit that are under the cooking panel from above it.
    Type: Application
    Filed: November 8, 2001
    Publication date: July 4, 2002
    Inventors: Dietmar Wennemann, Susanne Rapp, Monica Cotlear De Witzmann, Peter Nass, Evelin Weiss, Dieter Schoenig
  • Patent number: 6369365
    Abstract: Modern cooking ranges have a glass-ceramic panel (1) providing a cooking surface with at least one cooking zone, which typically is associated with a radiating heated body. To indicate the cooking zone and, if necessary, the residual heat, it is known to associate an externally lighted annular glass with the heated body, which is observable from above as a lighted ring. A structured lighted cooking zone indicating device is provided according to the present invention by a structured light-impermeable coating layer (2) applied directly to the underside of the glass-ceramic panel (1) having transparent regions forming a predetermined or desired structure or pattern within the cooking zone indicating device. This cooking zone indicating device is made by a screen printing technique in which a heat-resistant light-impermeable varnish is applied to the underside of the glass-ceramic panel to form the structured coating layer (2).
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: April 9, 2002
    Assignee: Schott Glas
    Inventors: Peter Nass, Dietmar Wennemann, Dietmar Schoenig, Stefan Hubert, Patrik Schober
  • Publication number: 20010038004
    Abstract: Stove or grill having a cook top, hob or cooking surface for cooking food. The cook top or hob is made of a glass ceramic material. The top surface of the cook top or hob has at least one groove-shaped depression to define and separate various zone and cooking areas on the cook top or hob.
    Type: Application
    Filed: January 11, 2001
    Publication date: November 8, 2001
    Inventors: Ioannis Kosmas, Dietmar Wennemann, Joachim Grutzke
  • Patent number: 5716712
    Abstract: A glass-ceramic article decorated with ceramic colorings has a first coloration layer over which at least a second coloration layer is arranged. The second coloration layer at least partially overlaps the first coloration layer. The first coloration layer can be applied as a base decor over a large area and be finely distributed on the surface of the glass-ceramic article. The base decor, for example, also protects the surface of the glass-ceramic article against scratches. The second coloration layer is colored differently and, as a marking decor, defines, for example, the cooking zones and facilitates the confusion-free recognition of the thereby individualized color function areas.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: February 10, 1998
    Assignee: Schott Glaswerke
    Inventors: Dieter Schonig, Dietmar Wennemann, Waldemar Weinberg, Monica Cotlear de Witzmann
  • Patent number: 4201184
    Abstract: Gas-heated, glass-ceramic cooking stove incorporating at least one improved gas heated radiation burner subassembly. Each such burner subassembly comprises an infrared radiation burner, a glass, a housing about a burner chamber, a burner plate, a nozzle and mixer pipe, an exhaust gas ring, a waste gas conduit, an igniter, and safety and regulating means. A glass ceramic cover plate is integrally associated with each burner subassembly and serves directly as a cooking surface.
    Type: Grant
    Filed: May 11, 1977
    Date of Patent: May 6, 1980
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventors: Herwig Scheidler, Dietmar Wennemann, Bernd Schwank