Patents by Inventor Thomas Siegmund
Thomas Siegmund 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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Patent number: 10468326Abstract: Metamaterial systems capable of exhibiting changes in thermal conductivities in response to an external control or input, as well as methods relating thereto. The metamaterial systems include first and second plates, and a metamaterial core between and thermally coupled to the first and second plates. The metamaterial core comprises a plurality of elements coupled to and contacting each other, with each of the elements being a pseudo-tetrahedron having surfaces that define surface-to-surface contacts with at least one other of the elements. A force is applied to the metamaterial core that increases contact pressures between the elements at the surface-to-surface contacts thereof and thereby increases thermal contact conductivities at the surface-to-surface contacts and increases a thermal conductivity of the metamaterial core.Type: GrantFiled: June 9, 2014Date of Patent: November 5, 2019Assignee: Purdue Research FoundationInventors: Thomas Siegmund, Yuezhong Feng, Somesh Khandelwal
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Publication number: 20160060317Abstract: The present invention relates to neurturin protein products conjugated to polyols and to pharmaceutical compositions comprising neurturin conjugates as active ingredients, preferably PEGylated neurturin conjugates or variants thereof, having increased bioavailability.Type: ApplicationFiled: April 8, 2015Publication date: March 3, 2016Inventors: Matthias Austen, Marcus Geese, Rainer Mussmann, Friedrich Harder, Thomas Siegmund, Martin Schneider
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Patent number: 9163398Abstract: A cellular material barrier system for reducing sound transmission. The cellular material system includes a planar cellular metamaterial arrangement which includes at least one unit cell, the unit cell includes a sound normalizing arrangement, and a planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement includes a plate, and a frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angle to thereby convey sound at normal angles to the planar metamaterial arrangement, the unit cell further comprising a back layer that is coupled to the sound normalizing arrangement on a second side, opposite the first side, the back layer is made from a porous material, including at least one of a fibrous layer, polymeric foams, ceramic foams, and metallic foams.Type: GrantFiled: May 19, 2014Date of Patent: October 20, 2015Assignee: PURDUE RESEARCH FOUNDATIONInventors: Satya Surya Srinivas Varanasi, Somesh Khandelwal, Thomas Siegmund, John Stuart Bolton, Raymond J. Cipra
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Patent number: 9029323Abstract: The present invention relates to neurturin protein products conjugated to polyols and to pharmaceutical compositions comprising neurturin conjugates as active ingredients, preferably PEGylated neurturin conjugates or variants thereof, having increased bioavailability.Type: GrantFiled: May 5, 2010Date of Patent: May 12, 2015Assignee: Evotec International GmbHInventors: Matthias Austen, Marcus Geese, Rainer Mussmann, Friedrich Harder, Thomas Siegmund, Martin Schneider
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Publication number: 20140360709Abstract: Metamaterial systems capable of exhibiting changes in thermal conductivities in response to an external control or input, as well as methods relating thereto. The metamaterial systems include first and second plates, and a metamaterial core between and thermally coupled to the first and second plates. The metamaterial core comprises a plurality of elements coupled to and contacting each other, with each of the elements being a pseudo-tetrahedron having surfaces that define surface-to-surface contacts with at least one other of the elements. A force is applied to the metamaterial core that increases contact pressures between the elements at the surface-to-surface contacts thereof and thereby increases thermal contact conductivities at the surface-to-surface contacts and increases a thermal conductivity of the metamaterial core.Type: ApplicationFiled: June 9, 2014Publication date: December 11, 2014Inventors: Thomas Siegmund, Yuezhong Feng, Somesh Khandelwal
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Publication number: 20140339014Abstract: A cellular material barrier system for reducing sound transmission. The cellular material system includes a planar cellular metamaterial arrangement which includes at least one unit cell, the unit cell includes a sound normalizing arrangement, and a planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement includes a plate, and a frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angle to thereby convey sound at normal angles to the planar metamaterial arrangement, the unit cell further comprising a back layer that is coupled to the sound normalizing arrangement on a second side, opposite the first side, the back layer is made from a porous material, including at least one of a fibrous layer, polymeric foams, ceramic foams, and metallic foams.Type: ApplicationFiled: May 19, 2014Publication date: November 20, 2014Applicant: PURDUE RESEARCH FOUNDATIONInventors: Satya Surya Srinivas Varanasi, Somesh Khandelwal, Thomas Siegmund, John Stuart Bolton, Raymond J. Cipra
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Publication number: 20130231283Abstract: The present invention relates to neurturin protein products conjugated to polyols and to pharmaceutical compositions comprising neurturin conjugates as active ingredients, preferably PEGylated neurturin conjugates or variants thereof, having increased bioavailability.Type: ApplicationFiled: February 1, 2013Publication date: September 5, 2013Applicant: DeveloGen AktiengesellschaftInventors: Matthias Austen, Marcus Geese, Rainer Mussmann, Friedrich Harder, Thomas Siegmund, Martin Schneider
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Patent number: 8237382Abstract: An LED module (10) for operating at least one LED (18) comprising an input (E1, E2) adapted for coupling to a DC voltage source (UE); an output (A1, A2) adapted for coupling to the at least one LED (18); a filter device (14); and a DC-DC converter (16); wherein the filter device (14) and the DC-DC converter (16) are coupled in series between the input (E1, E2) and the output (A1, A2), and wherein the output (DCA1, DCA2) of the DC-DC converter (16) is coupled to the output (A1, A2) of the LED module (10); wherein the LED module further comprises an electronic switch (Q1), which is configured to couple the DC-DC converter (16) to the input (E1, E2) of the LED module (10) and to decouple it therefrom.Type: GrantFiled: February 13, 2007Date of Patent: August 7, 2012Assignee: Osram AGInventors: Thomas Siegmund, Adrian Zingalik
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Patent number: 8134297Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.Type: GrantFiled: August 30, 2006Date of Patent: March 13, 2012Assignee: Osram AGInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Publication number: 20110204792Abstract: A circuit arrangement for operating an OLED may include a current source to supply the OLED with power; an OLED voltage measuring device configured to provide at its output a signal which is correlated with the voltage dropping across the OLED; an evaluation device configured to provide at its output a first signal if the voltage dropping across the OLED lies above a specifiable threshold value, and to provide a second signal if the voltage dropping across the OLED lies below the specifiable threshold value; an electronic switch having a reference electrode, a working electrode and a control electrode; and at least one ohmic resistor; wherein the series connection of the at least one ohmic resistor and the working electrode-reference electrode section of the electronic switch is connected in parallel with the OLED.Type: ApplicationFiled: November 4, 2008Publication date: August 25, 2011Applicant: OSRAM Gesellschaft mit beschraenkter HaftungInventor: Thomas Siegmund
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Publication number: 20110003741Abstract: The present invention relates to neurturin protein products conjugated to polyols and to pharmaceutical compositions comprising neurturin conjugates as active ingredients, preferably PEGylated neurturin conjugates or variants thereof, having increased bioavailability.Type: ApplicationFiled: May 5, 2010Publication date: January 6, 2011Applicant: DEVELOGEN AKTIENGESELLSCHAFTInventors: Matthias Austen, Marcus Geese, Rainer Mussmann, Friedrich Harder, Thomas Siegmund, Martin Schneider
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Patent number: 7786683Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.Type: GrantFiled: June 27, 2006Date of Patent: August 31, 2010Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Publication number: 20100156299Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.Type: ApplicationFiled: August 30, 2006Publication date: June 24, 2010Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Publication number: 20100039045Abstract: An LED module (10) for operating at least one LED (18) comprising an input (E1, E2) adapted for coupling to a DC voltage source (UE); an output (A1, A2) adapted for coupling to the at least one LED (18); a filter device (14); and a DC-DC converter (16); wherein the filter device (14) and the DC-DC converter (16) are coupled in series between the input (E1, E2) and the output (A1, A2), and wherein the output (DCA1, DCA2) of the DC-DC converter (16) is coupled to the output (A1, A2) of the LED module (10); wherein the LED module further comprises an electronic switch (Q1), which is configured to couple the DC-DC converter (16) to the input (E1, E2) of the LED module (10) and to decouple it therefrom.Type: ApplicationFiled: February 13, 2007Publication date: February 18, 2010Inventors: Thomas Siegmund, Adrian Zingalik
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Patent number: 7456578Abstract: A circuit arrangement has a drive circuit for a lamp having a first connection for a first filament of the lamp and a second connection for a second filament of the lamp, a protective circuit, coupled on the output side to the drive circuit and on the input side to the first connection for the first filament and the second connection for the second filament such that a first signal correlated with an operational parameter of the first filament, and a second signal, correlated with an operational parameter of the second filament, can be transmitted to the protective circuit. The arrangement also includes a modification apparatus connected between the protective circuit and the first connection and/or the second connection, the apparatus designed to modify the first signal and/or the second signal and to make them available to the protective circuit as a modified first signal and/or a modified second signal.Type: GrantFiled: January 27, 2006Date of Patent: November 25, 2008Assignee: Patent-Treuhand-Gesellschaft fur Ellectrische Gluhlampen mbHInventors: Markus Heckmann, Thomas Siegmund
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Patent number: 7352079Abstract: An electronic ballast for a lamp has a DC voltage connection; a switching unit having a supply voltage with the DC voltage connection being coupled thereto, and a first capacitor coupled between the supply voltage connection and a reference potential; an AC voltage connection, at which a voltage can be made available which has at least one AC component. The series circuit includes a first nonreactive resistor and a first diode, as a second nonreactive resistor coupled between the AC voltage connection and the supply voltage connection, a connection point between the first diode and the second nonreactive resistor, and a second capacitor coupled between the connection point and the reference potential. The first capacitor and the second nonreactive resistor are dimensioned such that the average voltage drop across the second nonreactive resistor is greater than or equal to the average voltage drop across the first capacitor.Type: GrantFiled: April 13, 2006Date of Patent: April 1, 2008Assignee: Patent-Treuhand-Gesellscaft für Elektrische Glühlampen mbHInventors: Markus Heckmann, Alfons Lechner, Thomas Siegmund
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Patent number: 7327094Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp (LP) having a drive circuit (16), which has at least one terminal for a system voltage (UN) on the input side and at least one terminal for the at least one electric lamp (LP) on the output side; the drive circuit (16) having a control unit (18) and a step-up converter having a step-up converter inductor (L2) and a switch (S1), and the control unit (18) being designed to operate the step-up converter in a discontinuous mode, in which the current (IN) through the step-up converter inductor (L2) has gaps, the duration (?t) of these gaps being varied. It also relates to an operating method for at least one electric lamp (LP) using such a circuit arrangement.Type: GrantFiled: July 6, 2006Date of Patent: February 5, 2008Assignee: Patent-Treuhand-Gesellschaft fur Elektrische Gluhlampen mbHInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Patent number: 7309963Abstract: The present invention relates to an electronic ballast for discharge lamps, for example low-pressure discharge lamps, having a converter having a switching element and a two-part lamp inductor which is connected upstream and downstream of the discharge lamp. An electronic ballast according to the invention has a smoothing circuit which reduces voltage jumps caused by switching operations in the converter at the lamp terminals.Type: GrantFiled: June 20, 2006Date of Patent: December 18, 2007Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Publication number: 20070210719Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.Type: ApplicationFiled: June 27, 2006Publication date: September 13, 2007Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Publication number: 20070110728Abstract: The present invention relates generally to methods for preventing and/or treating pancreatic disorders, particularly those related to diabetes, by administering a DG119-1 product or a DG119-1 agonist and/or an antagonist To a DG 119-2 product.Type: ApplicationFiled: November 29, 2004Publication date: May 17, 2007Applicant: DEVELOGEN AKTIENGESELLSCHAFTInventors: Matthias Austen, Daria Onichtchouk, Thomas Siegmund, Kristin Aduroja, Bettina Rudolph, Friedrich Harder