Patents by Inventor Hildegard Romer
Hildegard Romer 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).
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Publication number: 20240010539Abstract: A method of making glass products includes: heating material to obtain a glass melt; heating the glass melt in a melting tank having a melting tank bottom, the glass melt having a melt volume, a melt surface, and a viscosity of 102 dPas at a temperature above 1580° C. The glass melt is heated such that at least some of the glass melt has a viscosity of 102.5 dPas or less. An amount of thermal energy introduced directly into the melt volume is more than 60% of a total amount of thermal energy introduced into the glass melt. A maximum difference between a temperature at a location on the melt surface and a temperature at a location at the melting tank bottom vertically underneath the location on the melt surface is such that a difference in glass melt densities is less than 0.05 g/cm3 per meter distance between the locations.Type: ApplicationFiled: September 20, 2023Publication date: January 11, 2024Applicant: Schott AGInventors: Hildegard Römer, Michael Hahn, Stefan Rosner, Volker Trinks, Rainer Eichholz, Christoph Bergmann, Armin Vogl, Jörg Hessenkemper, Horst Blei, Klaus Schönberger, Sybille Haas, Guido Räke, Stefan Schmitt, Christoph Berndhäuser, Olaf Claussen, Christopher Klein, Wolfgang Schmidbauer
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Publication number: 20230020260Abstract: A method and an apparatus for melting down glass are provided. The method includes using microwave radiation for at least part of the energy supply for melting for transforming a batch into a glass melt. The microwave radiation captures at least part of the transition between batch and primary melt. The method and apparatus include melting assembly with a melting tank which has walls within which both the batch for melting and the molten batch can be accommodated as a glass melt, where above the batch and above the glass melt there is at least one microwave-emitting source disposed.Type: ApplicationFiled: September 6, 2022Publication date: January 19, 2023Applicant: SCHOTT AGInventors: Volker OHMSTEDE, Michael HAHN, Günter WEIDMANN, Hildegard RÖMER, Peter FRANKE, Frank-Thomas LENTES, Wolfgang SCHMIDBAUER, Rainer Erwin EICHHOLZ
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Publication number: 20230021281Abstract: A method and an apparatus for melting and refining glass, glass ceramic, or ceramizable to form glass ceramic are provided. The method and apparatus refine the materials such that less than 1 bubble/kg is included in the molten and refined material and the direct CO2 emissions amount to less than 100 kg per ton of molten material during the melting and refining.Type: ApplicationFiled: September 6, 2022Publication date: January 19, 2023Applicant: SCHOTT AGInventors: Hildegard RÖMER, Wolfgang SCHMIDBAUER, Michael HAHN, Stefan SCHMITT, Klaus SCHÖNBERGER
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Publication number: 20190308899Abstract: The present invention relates generally to a process for producing glass products and to an apparatus suitable for the purpose. In the process, a melting apparatus is provided with a melting tank for producing a glass melt from glass raw materials and a top furnace. Part of the surface of the melting region of the melting apparatus is covered with the glass raw materials and at least a small portion of the surface of the melting region is uncovered. In addition, energy is introduced in such a way that a vertical temperature difference can be established, such that the temperature of the glass melt at the base is greater than the temperature of the atmosphere in the top furnace.Type: ApplicationFiled: April 9, 2019Publication date: October 10, 2019Applicant: Schott AGInventors: Stefan Schmitt, Wolfgang Schmidbauer, Christian Müller, Frank-Thomas Lentes, Michael Hahn, Reinhard Männl, Hildegard Römer, Karin Naumann
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Patent number: 8424342Abstract: 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 Teff?20% to Teff+20%, where the temperature Teff is 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.Type: GrantFiled: March 31, 2004Date of Patent: April 23, 2013Assignee: Schott AGInventors: Werner Kiefer, Hildegard Römer, Frank-Thomas Lentes, Guido Räke, Volker Ohmstede, Karin Naumann, Michael Leister, Gerhard Nuessle, Erich Rodek, Wolfgang Schmidbauer
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Patent number: 7905115Abstract: The invention relates to glass powder, especially a biologically active glass powder, which includes a plurality of glass particles and which is characterized by the following features: the glass particles are made up by >90% of non-spherical particles; the geometry of the individual non-spherical particle is characterized by a ratio of length to diameter of 1.1 to 105.Type: GrantFiled: December 21, 2005Date of Patent: March 15, 2011Assignee: Schott AGInventors: Guido Räke, Hildegard Römer, Peter Schreckenberg, Josè Zimmer, Frank Büllesfeld, Jörg Fechner, Cevin Czisch, Udo Fritsching
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Patent number: 7444837Abstract: A method and an apparatus for the rapid melting of glasses in a skull crucible is provided. The method and apparatus introduce high-frequency energy into the contents of the crucible by means of a coil arrangement surrounding the skull crucible, in order to heat the melt, and the batch is laid and the molten glass discharged in the upper region of the crucible, and undissolved constituents of the batch are retained by means of a cooled bridge which is immersed in the melt. The glass is taken off above the coil arrangement and is fed for further processing without flowing through the coil region.Type: GrantFiled: October 1, 2002Date of Patent: November 4, 2008Assignee: Schott AGInventors: Hildegard Römer, Michael Leister, Uwe Kolberg, Karl Mennemann, Guido Räke, Ernest Walter Schäfer, Sybill Nüttgens, Volker Ohmstede
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Publication number: 20080060382Abstract: The invention relates to glass powder, especially a biologically active glass powder, which includes a plurality of glass particles and which is characterized by the following features: the glass particles are made up by >90 % of non-spherical particles; the geometry of the individual non-spherical particle is characterized by a ratio of length to diameter of 1.1 to 105.Type: ApplicationFiled: December 21, 2005Publication date: March 13, 2008Inventors: Guido Rake, Hildegard Romer, Peter Schreckenberg, Jose Zimmer, Frank Bullesfeld, Jorg Fechner, Cevin Czisch, Udo Fritsching
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Publication number: 20060291528Abstract: 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 Teff?20% to Teff+20%, where the temperature Teff is 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.Type: ApplicationFiled: April 2, 2003Publication date: December 28, 2006Inventors: Werner Kiefer, Hildegard Romer, Frank-Thomas Lentes, Guido Rake, Volker Ohmstede, Karin Naumann, Michael Leister, Gerhard Nuessle, Rodek Erich, Wolfgang Schmidbauer
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Patent number: 7137277Abstract: The invention relates to a method and a device for producing colored glasses. The aim of the invention is to obtain a paricularly intimate mixture and to enable a quick change of the melt at the same time. To this end, the following procedure steps are applied: a melt made of a compound or fragments of glass is produced, the glass melt is further processed in at least one additional vessel, the melt is supplied to a skull device (3) (skull pot or skull channel) during subsequent processing, a dye is supplied (6, 6.1) to the melt after the melt was in the melting station (1) but before the melt enters the skull device (3) or while said melt is in the skull device.Type: GrantFiled: August 16, 2000Date of Patent: November 21, 2006Assignee: Schott AGInventors: Hildegard Romer, Werner Kiefer, Wolfgang Schmidbauer
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Publication number: 20060144089Abstract: A method and an apparatus for heating a melt in a melting vessel with cooled walls is provided. The melt is heated conductively by current flowing between at least two cooled electrodes, which each replace part of the wall of the melting vessel.Type: ApplicationFiled: November 27, 2003Publication date: July 6, 2006Inventors: Rainer Eichholz, Guido Rake, Volker Ohmstede, Gunter Weidmann, Frank-Thomas Lentes, Thomas Stelle, Ernst-Walter Schafer, Hildegard Romer, Jorg Schollmayer, Holger Hunnius, Frank-Jurgen Druschke
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Patent number: 7010941Abstract: A structural component for a device for the treatment of melts, especially of glass melts, having a base body of metal or of a metal alloy and a cooling system in which a cooling medium is led through the structural component for the leading-off of heat. The base body is provided with a coating of a material the decomposition temperature of which lies below the temperature of the melt, and the cooling system is designed and arranged in such manner that the temperature of the boundary layer of the melt that immediately surrounds the structural component lies below the decomposition temperature of the coating material.Type: GrantFiled: January 12, 2001Date of Patent: March 14, 2006Assignee: Schott AGInventors: Christian Kunert, Uwe Kolberg, Werner Kiefer, Hildegard Römer, Volker Ohmstede
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Patent number: 6889527Abstract: The invention relates to a skull pot (1) for melting, crystallizing or refining inorganic substances. Said pot comprises a pot wall (1.1), a pot bottom (1.2), an induction coil (2) which surrounds the pot wall (1.1) and by means of which high-frequency energy can be coupled into the content of the pot. The pot wall (1.1) is formed by a ring of metal pipes which can be connected to a cooling medium. Slits are embodied between adjacent metal pipes. The bottom (1.2) is provided with a discharge for the melt (3). A sleeve (4) is allocated to the discharge. The admission end (4.1) of the sleeve (4) protrudes far into the inner chamber of the skull pot (1) in such a way that, during use, the melt (3) can be withdrawn through the crystallized bottom layer (3.3) in a controlled manner without the danger of impairing quality.Type: GrantFiled: August 16, 2000Date of Patent: May 10, 2005Assignee: Schott GlasInventors: Hildegard Römer, Uwe Kolberg, Guido Räke
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Publication number: 20050083989Abstract: In order, inter alia, to provide an apparatus and a process for melting inorganic substances which allow a high product quality to be obtained and the technological outlay to be reduced, the invention provides a process and an apparatus in which the volumetric ratios between a melting region and a refining region can be flexibly adapted.Type: ApplicationFiled: July 1, 2004Publication date: April 21, 2005Inventors: Michael Leister, Volker Ohmstede, Andreas Grobeta, Ernst-Walter Schafer, Guido Rake, Hildegard Romer
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Publication number: 20050039492Abstract: The invention describes a method and an apparatus for the rapid melting of in particular high-purity, aggressive and/or high-melting glasses in a skull crucible, in which high-frequency energy is introduced into the contents of the crucible by means of a coil arrangement surrounding the skull crucible, in order to heat the melt, and the batch is laid and the molten glass discharged in the upper region of the crucible, and undissolved constituents of the batch are retained by means of a cooled bridge which is immersed in the melt. According to the invention, the glass is taken off above the coil arrangement (1.3) and is fed for further processing without flowing through the coil region. This has the advantage that simple, conventional components can be used to connect the melting unit to the further-processing stations, and the type of connection can be selected in such a way that it is possible to prevent the quality of the glass from being impaired by connection techniques which are less than optimum.Type: ApplicationFiled: October 1, 2002Publication date: February 24, 2005Inventors: Hildegard Romer, Michael Leister, Uwe Kolberg, Karl Mennemann, Guido Rake, Ernst Schafer, Sybill Nuttgens, Volker Ohmstede
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Patent number: 6854291Abstract: A method and device for nozzle-injection of gas into molten glass is disclosed wherein a gas stream is introduced into the molten glass in a temporally pulsed throughput such that the gas stream is interrupted between two sequential pulses, the duration of each pulse amounting to less than one second.Type: GrantFiled: August 31, 2001Date of Patent: February 15, 2005Assignee: Schott GlasInventors: Hildegard Romer, Nicole Surges, Paul Kissl, Thomas Kirsch
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Patent number: 6848275Abstract: This invention relates to a device for melting or refining glass or glass ceramics. According to the invention, such a device is provided with the following characteristics: a channel which is arranged in an essentially horizontal manner and which is provided with an inlet and an outlet for the glass melt; and an HF coil for coupling HF energy into the melt is allocated to the channel. The channel is made of a plurality of metal pipes in a similar way to a skull pot. Said pipes can be connected to a cooling medium.Type: GrantFiled: August 8, 2000Date of Patent: February 1, 2005Assignee: Schott GlasInventors: Uwe Kolberg, Hildegard Römer, Frank-Thomas Lentes, Günter Weidmann
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Patent number: 6829909Abstract: The invention relates to a method for heating up and shaping a preform consisting of glass or glass ceramic. According to the invention, a preform, formed using conventional methods, is heated to a temperature that is below the adhesion temperature of the gas, i.e. to below critical viscosity; in a second heating phase the preform is put into a hovering state through the supply of levitation gas; in the hovering state the preform is heated by a microwave heating apparatus to a temperature that permits its shaping; and the preform is delivered to a shaping station.Type: GrantFiled: September 10, 2001Date of Patent: December 14, 2004Assignee: Schott GlasInventors: Andreas Langsdorf, Hildegard Romer
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Patent number: 6817212Abstract: The invention relates to a skull pot for melting or refining glass or glass ceramics, comprising a pot wall (1), a pot base, and an induction coil (3) which surrounds said pot wall and through which high-frequency energy can be coupled into the contents of the pot. The pot wall is made up of a ring of metal pipes (1.1) which can be connected to a cooling medium, slot-type intermediate chambers being provided between adjacent metal pipes. The pot base has a run-off for the melt. The metal pipes (1.1) that form the pot wall (1) arm short-circuited with each other above the base in order to increase the degree of efficiency of the skull pot and especially, in order to even out the temperature profile of the melt throughout the depth of the melt.Type: GrantFiled: April 29, 2002Date of Patent: November 16, 2004Assignee: Schott GLASInventors: Hildegard Römer, Uwe Kolberg, Guido Räke, Werner Kiefer, Michael Kohl, Wolfgang Schmidbauer
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Patent number: 6810689Abstract: The invention relates to a process for the production of a glass melt. For the avoidance of the oxygen reboil the process is equipped with the following process stages or steps: a melting stage a refining stage a homogenizing and conditioning stage; in which before the homogenizing and conditioning stage the melt is heated to a temperature of over 1700° C.; in which polyvalent ions are present in the melt in a proportion of at least 0.5% by wt.Type: GrantFiled: January 25, 2001Date of Patent: November 2, 2004Assignee: Schott GlassInventors: Hildegard Römer, Werner Kiefer, Wolfgang Schmidbauer, Thomas Pfeiffer, Guido Räke