Patents by Inventor Ralf Hofmann
Ralf Hofmann 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: 8747942Abstract: Solar cells are provided with carbon nanotubes (CNTs) which are used: to define a micron/sub-micron geometry of the solar cells; and/or as charge transporters for efficiently removing charge carriers from the absorber layer to reduce the rate of electron-hole recombination in the absorber layer. A solar cell may comprise: a substrate; a multiplicity of areas of metal catalyst on the surface of the substrate; a multiplicity of carbon nanotube bundles formed on the multiplicity of areas of metal catalyst, each bundle including carbon nanotubes aligned roughly perpendicular to the surface of the substrate; and a photoactive solar cell layer formed over the carbon nanotube bundles and exposed surfaces of the substrate, wherein the photoactive solar cell layer is continuous over the carbon nanotube bundles and the exposed surfaces of the substrate.Type: GrantFiled: June 9, 2010Date of Patent: June 10, 2014Assignee: Applied Materials, Inc.Inventors: Omkaram Nalamasu, Charles Gay, Victor L. Pushparaj, Kaushal K. Singh, Robert J. Visser, Majeed A. Foad, Ralf Hofmann
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Patent number: 8719778Abstract: A method is disclosed for producing a software application with at least two layers, including a processing layer and a process layer, wherein each layer is encapsulated and hence platform-independent in its execution, the encapsulated layers communicating via an application programming interface. A system is also disclosed for producing an application including a flexible interconnection interface between encapsulated layers. By virtue of the implementation of an additional configurable interconnection interface in the application programming interface between two encapsulated application layers, the architecture layering can be retained regardless of the respective deployment, and only the communication profiles of the interconnection interfaces need be adapted to the deployment.Type: GrantFiled: July 20, 2007Date of Patent: May 6, 2014Assignee: Siemens AktiengesellschaftInventors: Karlheinz Dorn, Ralf Hofmann
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Publication number: 20140071581Abstract: Embodiments of a portable electrostatic chuck for use in a substrate process chamber to support an ultra-thin substrate when disposed thereon are provided herein. In some embodiments, a portable electrostatic chuck may include a carrier comprising a dielectric material; an electrically conductive layer disposed on a top surface of the carrier; a dielectric layer disposed over the electrically conductive layer, such that the electrically conductive layer is disposed between the carrier and the dielectric layer; and at least one conductor coupled to the electrically conductive layer, wherein the portable electrostatic chuck is configured to electrostatically retain the ultra-thin substrate to the portable electrostatic chuck, wherein the portable electrostatic chuck is further configured to be handled and moved by substrate processing equipment outside of the substrate process chamber, and wherein the portable electrostatic chuck is sized to support large ultra-thin substrates.Type: ApplicationFiled: September 5, 2013Publication date: March 13, 2014Applicant: APPLIED MATERIALS, INC.Inventors: DIETER HAAS, MAJEED A. FOAD, RALF HOFMANN
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Publication number: 20140038431Abstract: Methods and apparatus for radiation processing of semiconductor substrates using microwave or millimeter wave energy are provided. The microwave or millimeter wave energy may have a frequency between about 600 MHz and about 1 THz. Alternating current from a magnetron is coupled to a leaky microwave emitter that has an inner conductor and an outer conductor, the outer conductor having openings with a dimension smaller than a wavelength of the emitted radiation. The inner and outer conductors are separated by an insulating material. Interference patterns produced by the microwave emissions may be uniformized by phase modulating the power to the emitter and/or by frequency modulating the frequency of the power itself. Power from a single generator may be divided to two or more emitters by a power divider.Type: ApplicationFiled: March 29, 2012Publication date: February 6, 2014Applicant: APPLIED MATERIALS, INC.Inventors: Michael W. Stowell, Majeed A. Foad, Ralf Hofmann, Wolfgang R. Aderhold, Stephen Moffatt
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Publication number: 20130196078Abstract: A substrate processing system for processing multiple substrates is provided and generally includes at least one substrate processing platform and at least one substrate staging platform. The substrate processing platform includes a rotary track system capable of supporting multiple substrate support assemblies and continuously rotating the substrate support assemblies, each carrying a substrate thereon. Each substrate is positioned on a substrates support assembly disposed on the rotary track system and being processed through at least one shower head station and at least one buffer station, which are positioned atop the rotary track system of the substrate processing platform. Multiple substrates disposed on the substrate support assemblies are processed in and out the substrate processing platform. The substrate staging platform includes at least one dual-substrate processing station, each dual-substrate processing station includes two substrate support assemblies for supporting two substrates thereon.Type: ApplicationFiled: January 30, 2013Publication date: August 1, 2013Inventors: Joseph Yudovsky, Nag B. Patibandla, Pravin K. Narwankar, Li-Qun Xia, Toshiaki Fujita, Ralf Hofmann, Jeonghoon Oh, Srinivas Satya, Banqiu Wu
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Publication number: 20130192761Abstract: A substrate processing system for processing multiple substrates is provided and generally includes at least one processing platform and at least one staging platform. Each substrate is positioned on a substrate carrier disposed on a substrate support assembly. Multiple substrate carriers, each is configured to carry a substrate thereon, are positioned on the surface of the substrate support assembly. The processing platform and the staging platform, each includes a separate substrate support assembly, which can be rotated by a separate rotary track mechanism. Each rotary track mechanism is capable of supporting the substrate support assembly and continuously rotating multiple substrates carried by the substrate carriers and disposed on the substrate support assembly. Each substrate is thus processed through at least one shower head station and at least one buffer station, which are positioned at a distance above the rotary track mechanism of the processing platform.Type: ApplicationFiled: January 30, 2013Publication date: August 1, 2013Inventors: Joseph Yudovsky, Ralf Hofmann, Jeonghoon Oh, Li-Qun Xia, Toshiaki Fujita, Pravin K. Narwankar, Nag B, Patibandla, Srinivas Satya, Banqiu Wu
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Publication number: 20130192524Abstract: A processing chamber having a plurality of movable substrate carriers stacked therein for continuously processing a plurality of substrates is provided. The movable substrate carrier is capable of being transported from outside of the processing chamber, e.g., being transferred from a load luck chamber, into the processing chamber and out of the processing chamber, e.g., being transferred into another load luck chamber. Process gases delivered into the processing chamber are spatially separated into a plurality of processing slots, and/or temporally controlled. The processing chamber can be part of a multi-chamber substrate processing system.Type: ApplicationFiled: January 31, 2013Publication date: August 1, 2013Inventors: Banqiu Wu, Nag B. Patibandla, Toshiaki Fujita, Ralf Hofmann, Pravin K. Narwankar, Jeonghoon Oh, Srinivas Satya, Li-Qun Xia
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Publication number: 20130056347Abstract: Apparatus and method for physical vapor deposition are provided. In some embodiments, a cooling ring to cool a target in a physical vapor deposition chamber may include an annular body having a central opening; an inlet port coupled to the body; an outlet port coupled to the body; a coolant channel disposed in the body and having a first end coupled to the inlet port and a second end coupled to the outlet port; and a cap coupled to the body and substantially spanning the central opening, wherein the cap includes a center hole.Type: ApplicationFiled: August 14, 2012Publication date: March 7, 2013Applicant: APPLIED MATERIALS, INC.Inventors: BRIAN WEST, GOICHI YOSHIDOME, RALF HOFMANN
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Publication number: 20120152203Abstract: In a method for operating an injector of an internal combustion engine of a motor vehicle, in which an actuator for driving a component of the injector is provided, the actuator is controlled in such a way that at least two partial injections are brought about within a working cycle of the internal combustion engine. For each partial injection, a starting point in time of the partial injection is ascertained.Type: ApplicationFiled: December 12, 2011Publication date: June 21, 2012Inventors: Guido Porten, Markus Amler, Matthias Walz, Alexandra Woerz, Ralf Hofmann, Arthur Pichlkostner
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Publication number: 20120152727Abstract: A deposition system for alkali and alkaline earth metals may include a metal sputter target including cooling channels, a substrate holder configured to hold a substrate facing and parallel to the metal sputter target, and multiple power sources configured to apply energy to a plasma ignited between the substrate and the metal sputter target. The target may have a cover configured to fit over the target material, the cover may include a handle for automated removal and replacement of the cover within the deposition system, and a valve for providing access to the volume between the target material and the cover for pumping, purging or pressurizing the gas within the volume. Sputter gas may include noble gas with an atomic weight less than that of the metal target.Type: ApplicationFiled: November 21, 2011Publication date: June 21, 2012Applicant: Applied Materials, Inc.Inventors: Byung Sung Kwak, Stefan Bangert, Michael Koenig, Florian Ries, Ralf Hofmann
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Publication number: 20110226617Abstract: A sputter deposition system comprises a vacuum chamber including a vacuum pump for maintaining a vacuum in the vacuum chamber, a gas inlet for supplying process gases to the vacuum chamber, a sputter target and a substrate holder within the vacuum chamber, and a plasma source attached to the vacuum chamber and positioned remotely from the sputter target, the plasma source being configured to form a high density plasma beam extending into the vacuum chamber. The plasma source may include a rectangular cross-section source chamber, an electromagnet, and a radio frequency coil, wherein the rectangular cross-section source chamber and the radio frequency coil are configured to give the high density plasma beam an elongated ovate cross-section. Furthermore, the surface of the sputter target may be configured in a non-planar form to provide uniform plasma energy deposition into the target and/or uniform sputter deposition at the surface of a substrate on the substrate holder.Type: ApplicationFiled: March 22, 2011Publication date: September 22, 2011Applicant: APPLIED MATERIALS, INC.Inventors: Ralf Hofmann, Majeed A. Foad
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Publication number: 20110131792Abstract: A magnetic handling assembly for thin-film processing of a substrate, a system and method for assembling and disassembling a shadow mask to cover a top of a workpiece for exposure to a processing condition. The assembly may include a magnetic handling carrier and a shadow mask disposed over, and magnetically coupled to, the magnetic handling carrier to cover a top of a workpiece that is to be disposed between the shadow mask and the magnetic handling carrier when exposed to a processing condition. A system includes a first chamber with a first support to hold the shadow mask, a second support to hold a handling carrier, and an alignment system to align the shadow mask a workpiece to be disposed between the carrier and shadow mask. The first and second supports are moveable relative to each other.Type: ApplicationFiled: October 15, 2010Publication date: June 9, 2011Applicant: APPLIED MATERIALS, INC.Inventors: Byung-Sung Leo KWAK, Stefan BANGERT, Ralf HOFMANN, Michael KOENIG
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Publication number: 20100313951Abstract: Solar cells are provided with carbon nanotubes (CNTs) which are used: to define a micron/sub-micron geometry of the solar cells; and/or as charge transporters for efficiently removing charge carriers from the absorber layer to reduce the rate of electron-hole recombination in the absorber layer. A solar cell may comprise: a substrate; a multiplicity of areas of metal catalyst on the surface of the substrate; a multiplicity of carbon nanotube bundles formed on the multiplicity of areas of metal catalyst, each bundle including carbon nanotubes aligned roughly perpendicular to the surface of the substrate; and a photoactive solar cell layer formed over the carbon nanotube bundles and exposed surfaces of the substrate, wherein the photoactive solar cell layer is continuous over the carbon nanotube bundles and the exposed surfaces of the substrate.Type: ApplicationFiled: June 9, 2010Publication date: December 16, 2010Applicant: APPLIED MATERIALS, INC.Inventors: Omkaram Nalamasu, Charles Gay, Victor L. Pushparaj, Kaushal K. Singh, Robert J. Visser, Majeed A. Foad, Ralf Hofmann
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Patent number: 7820020Abstract: A method of performing physical vapor deposition of copper onto an integrated circuit in a vacuum chamber of a plasma reactor includes providing a copper target near a ceiling of the chamber, placing an integrated circuit wafer on a wafer support pedestal facing the target near a floor of the chamber, introducing a carrier gas into the vacuum chamber having an atomic weight substantially less than the atomic weight of copper, maintaining a target-sputtering plasma at the target to produce a stream comprising at least one of copper atoms and copper ions flowing from the target toward the wafer support pedestal for vapor deposition, maintaining a wafer-sputtering plasma near the wafer support pedestal by capacitively coupling plasma RF source power to the wafer-sputtering plasma, and accelerating copper ions of the wafer sputtering plasma in a direction normal to a surface of the wafer support pedestal.Type: GrantFiled: May 25, 2005Date of Patent: October 26, 2010Assignee: Applied Materials, Inc.Inventors: Karl M. Brown, John Pipitone, Vineet Mehta, Ralf Hofmann
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Publication number: 20100255660Abstract: A method of forming a solar cell incorporating a compound semiconductor is provided. The compound semiconductor is generally of the “II/VI” variety, and is formed by depositing one or more group II elements in a vapor deposition process, and then contacting the deposited layer with a liquid bath of the group VI elements. The liquid bath may comprise a pure element or a mixture of elements. The contacting is performed under a non-reactive atmosphere, or vacuum, and any fugitive vapors may be captured by a cold trap and recycled. The substrate may be subsequently annealed to remove any excess of the group VI elements, which may be similarly recycled.Type: ApplicationFiled: April 6, 2010Publication date: October 7, 2010Applicant: APPLIED MATERIALS, INC.Inventors: Kaushal K. Singh, Ralf Hofmann, Nety M. Krishna
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Patent number: 7801965Abstract: A method for processing data is proposed, particularly image data in a medical system, in which a plurality of imaging modalities for capturing the data and their associated apparatus for locally processing and storing the data are connected to one another via a data transmission unit for the purpose of data interchange. Common data for all modalities are respectively stored locally and are coordinated with one another such that the respective modality remains active regardless of the state of the data transmission unit.Type: GrantFiled: March 30, 2005Date of Patent: September 21, 2010Assignee: Siemens AktiengesellschaftInventors: Ralf Hofmann, Ivan Murphy, Andreas Schuelke
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Publication number: 20100057828Abstract: A method, a system and a computer program are disclosed for the load-balanced allocation of computer-aided medical task flows on at least one application server of a server farm. In at least one embodiment, request conditions and load information are configured in a configuration phase. The request conditions are then recorded in a load balancing phase. In addition the load information is recorded via load calculation agents. A load balancing service can then calculate a target application server, which according to the load information determined meets all recorded request conditions.Type: ApplicationFiled: August 26, 2009Publication date: March 4, 2010Inventors: Ralf Hofmann, Andreas SchÜlke, Andreas Siwick, Hans-Martin Von Stockhausen
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Publication number: 20090238998Abstract: Disclosed are systems for achieving improved film properties by introducing additional processing parameters, such as a movable position for the microwave source and pulsing power to the microwave source, and extending the operational ranges and processing windows with the assistance of the microwave source. A coaxial microwave antenna is used for radiating microwaves to assist in physical vapor deposition (PVD) or chemical vapor deposition (CVD) systems. The system may use a coaxial microwave antenna inside a processing chamber, with the antenna being movable between a substrate and a plasma source, such as a sputtering target, a planar capacitively generated plasma source, or an inductively coupled source. In a special case when only a microwave plasma source is present, the position of the microwave antenna is movable relative to a substrate. The coaxial microwave antenna adjacent to the plasma source can assist the ionization more homogeneously and allow substantially uniform deposition over large areas.Type: ApplicationFiled: March 18, 2008Publication date: September 24, 2009Applicant: Applied Materials, Inc.Inventors: MICHAEL W. STOWELL, Nety Krishna, Ralf Hofmann, Joe Griffith
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Publication number: 20080141213Abstract: An interconnection system, a method for interconnecting different components and/or applications and a corresponding product are disclosed. In addition to a presentation layer, a business layer, a communication layer and a control layer, the framework system of at least one embodiment includes an instance which is intended to detect the current deployment environment in which the application is to run. In particular it is automatically detected here whether the application is to run as a web application or as a desktop application. Depending on this, the optimal infrastructure for the interconnection is provided automatically.Type: ApplicationFiled: October 29, 2007Publication date: June 12, 2008Inventors: Karlheinz DORN, Ralf HOFMANN
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Patent number: D664043Type: GrantFiled: March 26, 2009Date of Patent: July 24, 2012Assignee: GeneArt AGInventors: Ralf Hofmann, Christian Kranz, Carmen Lehner