Patents Assigned to Forschungszentrum Julich GmbH
  • Patent number: 7459229
    Abstract: The invention relates to a fuel cell stack in which, according to the invention, several elements of the fuel cell stack are advantageously sealed by a seal in order to form a continuous operating material channel. The inventive fuel cell stack can be provided with a very compact design, whereby the layer thickness of an individual fuel cell is, on a regular basis, distinctly less than 1.5 mm and, advantageously, even less than 1.2 mm.
    Type: Grant
    Filed: July 21, 2001
    Date of Patent: December 2, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Hendrik Dohle, Thomas Bewer
  • Patent number: 7442657
    Abstract: A stress relaxed monocrystalline layer structure is made on a nonlattice matched substrate by first applying to the substrate epitaxially a monocrystalline layer structure comprising at least one layer, the monocrystalline layer structure forming with the substrate an interface that has a greater lattice parameter mismatch on the substrate than within the monocrystalline layer structure. The monocrystalline layer is irradiated by directing an ion beam to generate predominantly point effects in the monocrystalline layer structure and an extended defect region in the substrate proximal to the monocrystalline layer structure. Then the monocrystalline layer structure is thermally treated in a temperature range of 550° C. to 1000° C. in an inert, reducing or oxidizing atmosphere so that the monocrystalline layer structure above the extended defect region is stress relaxed and has a defect density less than 106 cm?2 and a surface roughness of less than 1 nm.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: October 28, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventor: Siegfried Mantl
  • Publication number: 20080245446
    Abstract: Alloys containing aluminium are characterised by an outstanding oxidation resistance at high temperatures, that is based on, inter alia, the formation of a thick and slow-growing aluminium oxide layer on material surfaces. If the formation of the aluminium oxide layer reduces the aluminium content of the alloy so far that a critical aluminium concentration is not reached, no other protective aluminium oxide layer can be formed. This leads disadvantageously to a very rapid breakaway oxidation, and the destruction of the component. This effect is stronger at temperatures above 800° C. due to the fact that, often at this point, metastable Al203 modifications, especially ?- or ?-Al203, are formed instead of ?-Al203 that is generally formed at high temperatures. The above-mentioned oxide modifications are disadvantageously characterised by significantly higher growth rates.
    Type: Application
    Filed: November 20, 2004
    Publication date: October 9, 2008
    Applicant: Forschungszentrum Jülich GMBH
    Inventor: Willem J. Quadakkers
  • Publication number: 20080231268
    Abstract: The present invention relates to an imaging method and device for nuclear magnetic resonance. On the one hand, the method provides an image coding by means of an additional field which has, for each point of a two-dimensional grating surface within the sample, a different field strength value that occurs only once, as is the case, e.g., in fields based on fractal, surface-filling and space-filling curves. On the other hand, the read-out of the resonance behavior of a sample along a space-filling and/or surface-filling curve can be provided. In the first variant, a magnetic resonance (MR) image with a single high-frequency excitation without a time-varying gradient can be recorded, which in turn advantageously prevents the sound generation associated therewith. In the second variant, the sounds generated during read-out are advantageously shifted to another frequency range in which the human hearing is less sensitive.
    Type: Application
    Filed: December 17, 2004
    Publication date: September 25, 2008
    Inventors: Richard Patzak, Daniel Gembris, Stephan Appelt, Friedrich-Wolfgang Hasing, Horst Halling
  • Publication number: 20080220229
    Abstract: The invention relates to a method for a structured application of molecules on a strip conductor and to a molecular memory matrix. The inventive method makes it possible, for the first time, to economically and simply apply any number of molecular memory elements on the strip conductor in a structured and targeted way, thereby making available, also for the first time, a memory matrix at a molecular level.
    Type: Application
    Filed: November 30, 2005
    Publication date: September 11, 2008
    Inventors: Stephan Kronholz, Silvia Karthauser
  • Patent number: 7420736
    Abstract: A method for determining a set of grating parameters for producing a diffraction grating for a vacuum-ultraviolet spectrometer, the parameters used being the small and large radius of the toroidal grating substrate, the two distances between the two holographic illumination points and the grating origin, the angular position of the holographic illumination points in relation to the grating normal, and the laser wavelength for the holographic illumination. The method determines respective optimum grating parameters on numeric iterative paths for a specific problem definition. The method thus advantageously enables the production of a VUV spectrometer having a diffraction grating that for a predetermined wavelength range produces a minimum line width on the detector with a large range.
    Type: Grant
    Filed: January 17, 2004
    Date of Patent: September 2, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventor: Wolfgang Biel
  • Patent number: 7416965
    Abstract: The invention relates to a method for producing a layer structure comprising a strained layer on a substrate. The inventive method comprises the steps of producing a defect area in a layer adjoining the layer to be strained, and relaxing at least one layer adjoining the layer to be strained. The defect area is especially produced in the substrate. Additional layers can be epitactically grown. Layer structures so produced are especially suitable for producing various types of components.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: August 26, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Siegfried Mantl, Bernhard Holländer
  • Patent number: 7417117
    Abstract: The present invention relates to genetically modified cyclic nucleotide-gated ion channels whose subunits have been altered so as to have higher sensitivity to cAMP and/or higher selectivity for cAMP compared to cGMP in comparison with the wild type according to SEQ ID NO 1 and 2.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: August 26, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Heinz-Gerd Körschen, Reinhardt Seifert, Renate Gauss, Ulrich Kaupp
  • Patent number: 7390582
    Abstract: A method is disclosed for producing a protective coating on a chromium oxide forming substrate, in which on a surface of the chromium oxide forming substrate, a mixture of CoO, MnO, and CuO in suspension is applied, or a powdered CoO, MnO, and CuO is applied to said surface; at a temperature of 500 to 1000° C., to form a protective coating on the chromium oxide forming substrate, said protective coating consisting essentially of a uniform, gas-tight, compact, adherent chromium free spinel layer on which is coated a metal oxide layer of CoO, MnO, and CuO. Also disclosed are interconnectors for high temperature fuel cells as the chromium oxide forming substrates on which the protective coating is applied.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: June 24, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Frank Tietz, Mohsine Zahid
  • Patent number: 7351371
    Abstract: A porous near-net-shape metallic parts with an open porosity of at least 10% by volume is made by first forming an injectable mass of a metallic powder of stainless steel, Ti, NiTi, or a titanium alloy, at least one thermoplastic binder, and at least one place holder. The mass then injection molded into the shape of the part to be produced, cooled, set in a capillary-active material, and subjected to a first-stage binder removal to produce an open porosity. The place holder is then removed at least partially from the part with a fluid, and the part is subjected to a thermal binder-removing process. Finally the part is sintered.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: April 1, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Heinz Nelles, Martin Bram, Hans Peter Buchkremer, Detlev Stöver
  • Patent number: 7349517
    Abstract: The burnout of a fuel element in a reactor is determined by first transferring a fuel element from a reactor to a measuring position and then subjecting the transferred fuel element at the position to a neutron flux. A first detector measures the total ? radiation emitted by the transferred fuel element and thereafter, if the radiation measured by the first detector exceeds a predetermined first limit, the transferred fuel element is returned back to the reactor. If not, a second detector measures a magnitude of high energy ? radiation above 1 MeV emitted by the transferred fuel element and thereafter only if the radiation measured by the second detector exceeds a predetermined second limit, the transferred fuel element is transferred back to the reactor. The element is not returned to the reactor if the radiation measured by the second detector is below the second limit.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: March 25, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventor: Peter Pohl
  • Patent number: 7338719
    Abstract: MCrAl layers according to prior art often display chipping of the thermally grown aluminum oxide layer (TGO) as a result of thermally induced stresses, which significantly reduces the oxidation behavior or the bonding behavior of ceramic heat insulating layers. An inventive MCrAl layer is designed in such a way that the TGO created thereon is microporous and thus allows expansion. The microporosity of the TGO is ensured by adding elements into the MCrAl layer in a targeted manner.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: March 4, 2008
    Assignees: Siemens Aktiengesellschaft, Forschungszentrum Julich GmbH
    Inventors: Willem J. Quadakkers, Werner Stamm
  • Patent number: 7338829
    Abstract: The invention relates to a method for producing a detector for determining the energy of photons and charged particles; to be precise, a so-called ?E detector or transmission detector. The invention also relates to a detector that can be produced by using said method. The aim of the invention is to provide a method for producing a detector of the aforementioned type that is stable over a long period of time and in which dead zones are distinctly minimized. The invention also aims to provide a detector of this type. To these ends, the inventive method is used to produce a Si(Li) substrate having a p+ layer and an n layer. These can be layers produced according to the prior art. According to the inventive method, the n layer is partially removed, for example, by chemical etching, honing or by lapping. Lapping, in particular, has proven to be effective. This reduces the zone that is ineffective in a detector of the aforementioned type. The detector is produced from the substrate treated in this manner.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: March 4, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Davor Protic, Thomas Krings
  • Publication number: 20080046025
    Abstract: The invention relates to a method and a device for desynchronizing neural brain activity, a controller and a method for treating neurological and/or psychiatric disorders. According to the invention, low-frequency successions of high-frequency pulse trains are applied in corresponding brain regions. This suppresses symptoms and even brings about a cure in some cases.
    Type: Application
    Filed: June 15, 2007
    Publication date: February 21, 2008
    Inventor: Peter Tass
  • Patent number: 7329546
    Abstract: Oxygen isotropes are labeled from oxygen containing solids by heating the solids in a graphite crucible by induction to produce Co and/or Co2.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: February 12, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Gerhard Hans Schleser, Wolfgang Knörchen
  • Patent number: 7326953
    Abstract: The invention relates to a layered construction for a Gunn diode. The layered construction comprises a series of stacked layers consisting of a first highly doped nd GaAs layer (3), a graded AlGaAs layer (5), which is placed upon the first highly doped layer (3), whereby the aluminum concentration of this layer, starting from the boundary surface to the first nd GaAs layer (3), decreases toward the opposite boundary surface of the AlGaAs layer (5), and of a second highly doped n+ layer (7). An undoped intermediate layer (4, 6) serving as a diffusion or segregation stop layer is placed on at least one boundary surface of the AlGaAs layer (5) to one of the highly doped layers (3, 7) and prevents an unwanted doping of the graded layer.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: February 5, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Arnold Förster, Mihail Ion Lepsa, Jürgen Stock
  • Patent number: 7323759
    Abstract: A photosensor for a transmitted-light method for detecting the intensity profile of an optical standing wave, with a transparent substrate, with a semiconductor component, and with at least three contacts, is characterized by the fact that two semiconductor components are connected with each other, such that the first semiconductor component and the second semiconductor component each have a photoelectrically active first semiconductor layer, and such that the two photoelectrically active semiconductor layers have a fixed phase relation to each other, which is adjusted by at least one photoelectrically inactive layer.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: January 29, 2008
    Assignee: Forschungszentrum Jülich GmbH
    Inventors: Dietmar Knipp, Helmut Stiebig, Hans-Joachim Büchner, Gerd Jäger
  • Publication number: 20070296412
    Abstract: The invention relates to a method and a device for examining molecules by means of NMR spectroscopy. It is the object of the invention to be able to characterize a sample with a high resolution and comprehensively. The object is solved by a method and an associated device for examining a sample by means of nuclear magnetic spectroscopy by measuring heteronuclear and homonuclear J-couplings in a small magnetic field and by using the measured heteronuclear and homonuclear J-couplings for characterizing the sample.
    Type: Application
    Filed: March 2, 2007
    Publication date: December 27, 2007
    Applicant: Forschungszentrum Julich GmbH
    Inventors: Stephan Appelt, Holger Kuhn, Ulrich Sieling, Friedrich-Wolfgang Hasing
  • Patent number: 7307365
    Abstract: The invention concerns a magnetic guiding device (1) having at least one element (2) to be guided magnetically in the axial direction, e.g.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: December 11, 2007
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Johan K. Fremerey, Matthias Lang
  • Publication number: 20070249822
    Abstract: The invention relates to new photolabile coumarinylmethyl esters of cyclic nucleotides of general formula I wherein R1 represents hydrogen, bromine or p-chlorophenylthio R4 represents 7-carboxymethoxy, 6,7-, 5,7- or 7,8-bis-(carboxymethoxy), 7-C1-C3-alkoxycarbonylmethoxy, 6,7-bis(C1-C3-alkoxycarbonylmethoxy), 5,7-bis(C1-C3-alkoxy-carbonylmethoxy), or 7,8-bis(C1-C3-alkoxycarbonylmethoxy), R2 represents —NH2 and R3 is hydrogen (adenine residue), or R2 represents —OH and R3 represents NH2 (guanine residue) The inventive compounds are biologically inactive and exhibit high solubility in aqueous buffer solutions, high efficiency in photocleavage and rapid kinetics of liberation, together with high resistance to solvolysis.
    Type: Application
    Filed: March 26, 2001
    Publication date: October 25, 2007
    Applicants: Forschungsverbund Berlin E.V., Forschungszentrum Julich Gmbh
    Inventors: Volker Hagen, Ulrich Kaupp, Jurgen Bendig, Burghard Wiesner