Schott Glaswerke

Schott Ag

Schott Glas

Erich Rodek

Werner Kiefer

Friedrich Siebers

Waldemar Weinberg

Wolfgang Schmidbauer

Herwig Scheidler

Evelin Weiss

Kurt Schaupert

Peter Nass

Roland Leroux

Otmar Becker

Günter Weidmann

Jurgen Thurk

Klaus Schönberger

Hilgegard Römer

Andreas Schminke

Wolfgang Schmid-Bauer

Frank-Thomas Lentes

Uwe Kolberg

Thomas Pfeiffer

Ina Mitra

Karin Naumann

Stefan Hubert

Klaus Kristen

Hildegard R&ouml;mer

Volker Ohmstede

Ulrich Schiffner

Carsten Weinhold

Roland Dudek

Bernd Ruedinger

Hildegard Römer

Gerhard Lautenschläger

Rudolf Singer

Gerhard Hahn

Helga Goetz

Michael Leister

Michael Bug

Wolfgang Pannhorst

Nanning J Arfsten

Guido Räke

Petra Grewer

Horst Schillert

Wolfgang Muench

Patrik Schober

Christian Roos

Stefan Schmitt

Fritz Schroeder

Rainer Best

Detlef K&ouml;psel

Bernd Rudinger

Friedrich-Georg Schroder

Gerhard Nuessle

Reiner Best

Horst Blei

Detlef Köpsel

Joachim Oehler

Petra Illing-Zimmermann

A device for the refining of a glass melt at high temperatures according to the skull pot principle is provided. The device includes a skull crucible having walls that are constructed from a plurality of pipes, a high-frequency coil for coupling electrical energy into the contents of the skull crucible, and an inlet and an outlet of the skull crucible being arranged in a melt surface region of the glass melt, wherein the inlet and the outlet are essentially arranged lying opposite one another.

Method and a device for the refining of glass

A method for melting inorganic materials, preferably glasses and glass-ceramics, in a melting unit with cooled walls is provided. The method includes selecting the temperature of at least one region of the melt is selected in such a way as to be in a range from T&#x2212;20% to T+20%, where the temperature Tis given by the temperature at which the energy consumption per unit weight of the material to be melted is at a minimum, with the throughput having been selected in such a way as to be suitably adapted to the required residence time.

Melting and refining in tanks with cooled walls

A transparent, colorless lithium-aluminosilicate glass ceramic plate with high-quartz mixed crystals as the prevailing crystal phase, which is provided on one side with an opaque, colored, temperature-stable coating over the entire surface or over the entire surface to a large extent, is described, which has a content of NdOof 40 to 4000 ppm, a Yellowness Index of less than 10% with a 4 mm glass (ceramic) layer thickness, and a variegation of colors of the glass or the glass ceramic in the CIELAB color system of C* of less than 5. The glass ceramic plate preferably has a composition (in % by weight based on oxide) of: LiO 3.0-4.5, NaO 0-1.5, KO 0-1.5, &#x3a3;NaO+KO 0.2-2.0, MgO 0-2.0, CaO 0-1.5, SrO 0-1.5, BaO 0-2.5, ZnO 0-2.5, BO0-1.0, AlO19-25, SiO55-69, TiO1-3, ZrO1-2.5, SnO0-0.4, &#x3a3;SnO+TiO&#x3c;3, PO0-3.0, NdO0.01-0.4, CoO 0.0-0.004.

Transparent glass ceramic plate that has an opaque, colored bottom coating over the entire surface or over part of the surface

A method for the refining of glass by means of high temperatures in a skull crucible is provided. The method includes introducing a glass melt in the skull crucible through an inlet disposed at an upper region of the skull crucible, heating the skull crucible by irradiation of high-frequency energy, and discharging the glass melt from the skull crucible through an outlet disposed at the upper region, the outlet being disposed at a place essentially lying opposite the inlet.

Method for the refining of glass

The support plate for transporting products during thermal treatment at firing temperatures is a nonporous keatite glass ceramic supporting member without a glassy surface layer. It has a nubby structure on an underside thereof and preferably C-shaped rounded edges. A method of making the keatite glass ceramic supporting member is described.

Nonporous keatite glass ceramic support plate for transporting products during heat treatment, method of making same and method of transporting products therewith

A cooking stove having a cook top, or hob, for cooking food, components thereof, and method of production. The stove has a stove body, a smooth-top cook top with a cooking surface to cook food thereon, and a heat source disposed adjacent to the cooking surface. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. &#xa7;1.72(b). As stated in 37 C.F.R. &#xa7;1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading 'Abstract of the Disclosure.' The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, the abstract is not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Cooking stove and method for production and components thereof

A hot forming unit or debiteuse for plate glass production, with a noble metal box or frame encompassed by and contained in a highly heat-resistant ceramic frame and having a drawing slot matched to a cross section of a plate glass sheet to be produced. The dimensional integrity of the drawing slot of the noble metal frame is assured because the ceramic frame is constructed of longitudinal components and lateral components, where the longitudinal components of the ceramic frame and the longitudinal legs of the noble metal box rest against one another and are held so that they can still move axially against each other in a limited fashion. The longitudinal legs of the noble metal box are held in a stretched position by tension springs.

Debiteuse made of ceramic for plate glass production

The invention describes a method for refining molten glass materials, in which refining gas is generated by refining agents in the molten glass, and in which the molten glass is heated to a temperature of between 1650&deg; C. and 2800&deg; C., and the maximum release of refining gas by the refining agents takes place at over 1500&deg; C.

Method for refining molten glass

There is disclosed a stove, with a smooth-top cooktop, for cooking food, the stove comprising: a stove body; a smooth-top cooktop to cook food thereon; and at least one heat source disposed adjacent to a cooking surface of said cooktop. The cooktop comprises glass ceramic with an upper layer and an inner layer, with the upper layer comprising a different glass ceramic material than the inner layer. The upper layer is configured to minimize surface defects such as fissures, cracks, pits, and pores. The inner layer is configured to provide resistance to impact to the upper layer from cooking utensils being dropped onto the upper layer of the smooth-top cooktop, and at least the inner layer of the glass ceramic being configured to obscure visibility of the at least one heat source, through the upper layer of the glass ceramic.

COOKING STOVE HAVING A SMOOTH-TOP GLASS CERAMIC COOKTOP, AND A SMOOTH-TOP GLASS CERAMIC COOKTOP WITH A GLASS CERAMIC COOKTOP COOKING SURFACE, METHOD FOR PRODUCTION OF STOVES WITH SMOOTH-TOP GLASS CERAMIC COOKTOPS AND SMOOTH-TOP GLASS CERAMIC COOKTOPS

The wok is made from hardened glass or glass-ceramic material so that it has a cooking surface that is easier to clean than prior art metal woks. Furthermore when it is heated a better temperature distribution for cooking is produced and it can be universally heated, either by a radiantly heated body or an atmospheric gas burner. The method of making the wok starts with a glass blank or piece of borosilicate glass, which is heated until it softens and then is shaped or formed into the shape of the wok, optionally ceramicized and cooled.

Hardened glass or glass-ceramic cooking vessel formed as a wok, and method of making same

For removing halo formation, which often occurs on glass-ceramic articles decorated with a ceramic color, a layer of SiO.sub.2 is applied to the glass-ceramic article after the glass-ceramic color has been burnt-in. The layer is preferably 40-200 nm thick. The layer can contain up to 66.5% by weight of oxides, which change the refractive index so that the layer is invisible, the layer being, for example, 85-93% by weight of SiO.sub.2 and 7-15% by weight of TiO.sub.2.

Removal of halos from glass-ceramic articles decorated with a ceramic

An article of manufacture comprising a glass substrate having a thermal expansion of less than 5.0.multidot.10.sup.-6 /K and, coated thereon, a lead- and cadmium-free glaze comprising, in percent by weight, the following components:

Lead-and cadmium-free glass composition for glazing, enameling and

Large area decorations of glazings, ceramic paint or the like on glass ceramic, glass, ceramic or similar meltable substrates, in particular on glass ceramic cooking plates, are applied by the new method by means of a laser beam which is widened linearly over the entire width of the area to be decorated, as it were in a zone melting method. The linear energy supply zone is advanced at a speed high enough for essentially only the decorating material to be melted on or burnt in but ensuring that the thermal conduction front does not move appreciably into the substrate material.

Method for melting and/or burning-in of at least one layer

A transparent, colored glass ceramic containing high-quartz solid solution crystals, whose transmission in the IR range between 800 nm and 2.6 microns can be variably adjusted, and which has the composition (in weight percent) of 62-68% SiO.sub.2, 19.5-22.5% Al.sub.2 O.sub.3, 3.0-4.0 Li.sub.2 O, 1.5-3.5% BaO, 0.5-2.5% ZnO and 1.5-5.0% TiO.sub.2 in addition to other possible oxides, which are present in small quantities, the color being produced by MnO.sub.2, Fe.sub.2 O.sub.3, CoO, NiO, V.sub.2 O.sub.5 and Cr.sub.2 O.sub.3. This glass ceramic is transformed from the starting glass by a heat treatment between 680.degree. C. and 920.degree. C.

Transparent colored glass ceramic with good thermal stability and

Growing community of inventors

Mainz, Germany

Erich Rodek