Patents Assigned to Universität Freiburg
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Publication number: 20130089717Abstract: The invention relates to a method for the fabrication of structures from an ion gel. In particular, the invention relates to a method, wherein the structures are fabricated by way of ink jet printing technology, which comprises the following steps of mixing at least one monomer with at least one ionic liquid to a printable liquid; generating the structure by printing the printable liquid using ink jet printing technique; and forming the polymer by means of polymerization, polyaddition or polycondensation of the structure; wherein common solvents are omitted.Type: ApplicationFiled: June 23, 2011Publication date: April 11, 2013Applicant: ALBERT-LUDWIGS-UNIVERSITÄT FREIBURGInventors: Ute Löffelmann, Jan Gerrit Korvink, Dario Mager, Nan Wang
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Publication number: 20130068156Abstract: A method for growing II-VI semiconductor crystals and II-VI semiconductor layers as well as crystals and layers of their ternary or quaternary compounds from the liquid or gas phase is proposed. To this end, the solid starting materials are introduced into a growing chamber for the growing of crystals. Inside the growing chamber, carbon monoxide is supplied by way of reducing agent. At least certain zones of the growing chamber are heated to a temperature at which a first-order phase transition of the starting materials takes place and the starting materials pass into the liquid or gas phase. The starting materials are then cooled down accompanied by the formation of a semiconductor crystal or semiconductor layer, again with a first-order phase transition taking place. The oxygen present in the growing chamber is bound by the carbon monoxide and the formation of an oxide layer at the phase boundary of the growing semiconductor crystal or semiconductor layer is prevented.Type: ApplicationFiled: May 30, 2011Publication date: March 21, 2013Applicant: Albert-Ludwigs-Universitaet FreiburgInventor: Alex Fauler
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Patent number: 8338146Abstract: A process for preparing optically active alcohols of the formula Ia or Ib in which R1,R2 are alkyl, alkenyl, aryl, or alkylaryl groups which may in turn be substituted one or more times by alkyl, halogen, SH, SR2, OH, OR2, NO2, CN, CO, COOR2, NR2R3 or NR2R3R4+X, where R2, R3 and R4 are independently of one another H or a lower alkyl or lower alkoxy radical, and X?is a counter ion, with the proviso that R1 is not equal to R2, by reducing the corresponding ketone, where the reduction is carried out with a dehydrogenase having the polypeptide sequence of SEQ ID NO: 2 or NO: 4, or with a polypeptide sequence in which up to 25% of the amino acid residues are altered by comparison with SEQ ID NO: 2 or NO: 4 by deletion, insertion, substitution or a combination thereof.Type: GrantFiled: June 16, 2008Date of Patent: December 25, 2012Assignees: BASF SE, Albert-Ludwigs-Universitaet Freiburg, Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Michael Breuer, Ralf Rabus, Johann Heider
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Publication number: 20120314528Abstract: A device for producing a dilution series from a solution to be diluted, which contains a substance to be diluted, and a dilution solution, includes a body of rotation, a drive configured to subject the body of rotation to rotations having different rotation protocols, and a controller configured to control the drive so as to subject the body of rotation to the different rotational frequencies. A first mixing chamber and a second mixing chamber are connected via a fluidic connection which enables producing, in the first mixing chamber, a first mixture having a first dilution ratio, transferring a partial volume of the first mixture into the second mixing chamber, and there producing a second mixture having a second dilution ratio.Type: ApplicationFiled: May 11, 2012Publication date: December 13, 2012Applicant: Albert-Ludwigs-Universitaet FreiburgInventors: Guenter ROTH, Oliver STROHMEIER, Roland ZENGERLE
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Publication number: 20120015844Abstract: A method of producing a replicate or derivative of an array of molecules, the array having a spatial arrangement of separate samples of molecules, includes creating, for each sample, at least one spatially limited effective area which is separate from the effective areas of the other samples, a surface, provided with a binding adapter or binding properties, of a carrier bordering on the effective areas. The molecules are amplified by means of amplifying agents in the effective areas for creating replicates or derivatives of the samples. The replicates or derivatives of the samples are bound to the carrier by means of the binding adapter or the binding properties, so that a spatial arrangement of the replicates or derivatives of the samples on the carrier corresponds to the spatial arrangement of the samples in the array. The carrier having the copies of the samples is removed from the array.Type: ApplicationFiled: September 2, 2011Publication date: January 19, 2012Applicants: Albert-Ludwigs-Universitaet Freiburg, Hahn-Schickard-Gesellschaft fuer angewandte Forschung e.V.Inventors: Roland ZENGERLE, Felix VON STETTEN, Guenter ROTH, Jochen HOFFMANN
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Publication number: 20110115501Abstract: A measuring device has a micro-electromechanical capacitive sensor which has electrodes which move toward and away from each other for measurement of a mechanical deflection of a test mass. The measuring device has a charge integrator which has an operating amplifier which has at least one amplifier input connected to the sensor and an amplifier output which is fed back to the amplifier input via an integration capacitor. The amplifier input is connected via a high-resistance electrical resistor to a terminal for an electrical common-mode reference potential. In addition to the amplifier input, the operating amplifier has an auxiliary input. The amplifier output is connected to the auxiliary input via a deep pass.Type: ApplicationFiled: July 6, 2009Publication date: May 19, 2011Applicant: ALBERT-LUDWIGS-UNIVERSITÄT FREIBURGInventors: Lin He, Yiannos Manoli, Alexander Buhmann, Armin Taschwer, Thomas Northemann
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Patent number: 7943386Abstract: An apparatus for determining the volume fractions of the phases in a suspension includes a body, a channel structure, which is formed in the body, and an inlet area and a blind channel, which is fluidically connected to and capable of being filled via the same. Furthermore, a drive for imparting the body with rotation, so that phase separation of the suspension in the blind channel takes place, is provided. The blind channel includes such a channel cross-section and/or such wetting properties that, when filling same via the inlet area, higher capillary forces act in a first cross-sectional area than in a second cross-sectional area, so that at first the first cross-sectional area fills in the direction from the inlet area toward the blind end of the blind channel and then the second cross-sectional area fills in the direction from the blind end toward the inlet area.Type: GrantFiled: October 5, 2006Date of Patent: May 17, 2011Assignee: Albert-Ludwigs-Universitaet FreiburgInventors: Markus Grumann, Jens Ducrée, Roland Zengerle, Lutz Riegger
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Publication number: 20110097766Abstract: A method is disclosed for forming a covalent bond between two groups having carbonyl radicals in accordance with the present reaction equation: where R1 is hydrogen, a carboxyl group or a C1-C6 alkyl and R2 is an aromatic or heteroaromatic radical which may possibly be monosubstituted or disubstituted with halogen and/or a C1-C6 alkyl or is a substituent having the formula -A-B-C-D where A and C are each a C1-C6 alkyl, carbonyl or a covalent bond, B is a heteroatom such as oxygen and sulphur and D is an aliphatic radical having 1 to 6 carbon atoms, or an aromatic or heteroaromatic radical which may possibly be substituted, or where R1 and R2 together form a cyclic alkyl radical which may possibly be monosubstituted or disubstituted with a C1-C6 alkyl radical and/or with a hydroxy radical and which may possibly contain a heteroatom such as oxygen or sulphur, and R3 is hydrogen or a C1-C6 alkyl, wherein the reaction is catalysed by the enzyme YerE.Type: ApplicationFiled: May 14, 2009Publication date: April 28, 2011Applicant: ALBERT-LUDGWIGS-UNIVERSITÄT FREIBURGInventors: Michael Müller, Patrizia Lehwald, Michael Richter
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Publication number: 20100307584Abstract: A solar element with increased efficiency and also a method for increasing the efficiency of a solar cell are provided. The solar cell comprises a luminescent element, an upconverter, and also at least one selectively reflecting structure.Type: ApplicationFiled: July 15, 2008Publication date: December 9, 2010Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., ALBERT-LUDWIGS-UNIVERSITAET FREIBURGInventors: Jan Christoph Goldschmidt, Philipp Loeper, Marius Peters
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Publication number: 20100274746Abstract: Method and device for computer-aided prediction of intended movements from neuronal signals of a brain, wherein the neuronal signals are each associated in the brain with intended movements, wherein neuronal signals are recorded and the most probable movements are determined from these, specifically using a predetermined model in which a recorded neuronal signal and a determined movement are assigned to each other, and, for the probability with which a recorded neuronal signal corresponds to a respective predetermined movement, a predetermined distribution is assumed that is defined by specific characteristic values, wherein an adaptation of the neuronal signal is included in the predetermined model.Type: ApplicationFiled: June 23, 2008Publication date: October 28, 2010Applicant: ALBERT-LUDWIGS-UNIVERSITÄT FREIBURGInventors: Jörn Rickert, Carsten Mehring, Julie Blumberg, Daniel Braun, Tomislav Milekovic, Jörg Fischer
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Publication number: 20100267194Abstract: An electrical contact is applied on a semiconducting substrate, such as a solar cell. A layer of metallic powder is applied on the substrate. A laser beam is the guided over the substrate for local sintering and/or melting of the metallic powder. The non-sintered or non-melted metallic powder is then removed from the substrate.Type: ApplicationFiled: June 26, 2007Publication date: October 21, 2010Applicants: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Albert-Ludwig-Universität FreiburgInventors: Mónica Alemán, Ansgar Mette, Stefan Glunz, Ralf Preu
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Publication number: 20100221812Abstract: The present invention relates to the recombinant modification of microorganisms, in particular actinomycetes. This is effected with the use of the recombination systems Dre-rox and Cre-lox. The present invention provides novel nucleotide sequences for the recombinases of the abovementioned recombination systems. Here, synthetic genes which have the codons preferred by actinomycetes and can therefore be used in these host organisms were produced. With the method according to the invention for modifying microorganisms, it is possible to produce overproduction strains which are of economic importance for the production of medical active substances.Type: ApplicationFiled: February 12, 2008Publication date: September 2, 2010Applicant: ALBERT-LUDWIGS-UNIVERSITÄT FREIBURGInventors: Andreas Bechthold, Andriy Luzhetskyy, Lutz Petzke, Elisabeth Welle, Marta Fedoryshyn, Martina Daum, Simone Herrmann
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Publication number: 20100190224Abstract: The present invention relates to an isolated DNA, which is selected from the following sequences: a) a sequence according to SEQ ID No. 01, b) an intron-free sequence that is derived from a sequence according to a) and encodes the same protein or peptide as the sequence according to SEQ ID No. 01, c) a sequence that encodes a protein or peptide, which comprises the amino acid sequence according to SEQ ID No. 02, d) a sequence that is at least 80% identical to a sequence according to a) to c), e) a sequence that hybridizes with the antisense strand of a sequence according to one of the groups a) to d) or would hybridize taking into account degeneration of the genetic code, f) a derivative of a sequence according to one of the groups a) to e) obtained by substitution, addition, inversion and/or deletion of one or more bases, g) a sequence that corresponds to SEQ ID No. 01 within the degeneration of the genetic code, h) a sequence with neutral sense mutations of SEQ ID No.Type: ApplicationFiled: March 27, 2008Publication date: July 29, 2010Applicants: EVONIK DEGUSSA Gmbh, ALBERT-LUDWIG-UNIVERSITAET FREIBURGInventors: Markus Poetter, Achim Marx, Georg Fuchs, Birgit Alber, Tobias Juergen Erb
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Patent number: 7748962Abstract: A fluid handling apparatus includes a body, which comprises a fluid handling structure, and a flexible membrane attached to the body and formed to interact with a fluid in the fluid handling structure, wherein the membrane comprises a first actuation component. A second actuation component is provided, wherein the first and the second actuation component are formed such that the same attract or repel each other in a first positional relationship, in order to actuate the flexible membrane. A driving means is provided to move the body relative to the second actuation component, in order to bring the first and the second actuation component into the first and out of the first positional relationship.Type: GrantFiled: January 18, 2007Date of Patent: July 6, 2010Assignee: Albert-Ludwigs-Universitaet FreiburgInventors: Stefan Haeberle, Jens Ducrée, Roland Zengerle, Norbert Schmitt
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Publication number: 20100160940Abstract: A surgical instrument has a shaft, an end effector comprising at least one movably mounted tool element and defining a longitudinal axis, and a force transmitting member mounted in the shaft for movement in the distal and proximal directions for transmitting an actuating force introduced at a proximal end of the instrument onto the end effector in order to move the at least one tool element from a first tool element position to a second tool element position and/or vice versa. The at least one tool element is pivotably mounted on a bearing shaft held on the shaft. The at least one tool element is connected by at least one articulation member, at least a section of which is flexible, to the force transmitting member in order to transmit the actuating force from the force transmitting member onto the at least one tool element.Type: ApplicationFiled: December 17, 2009Publication date: June 24, 2010Applicants: Aesculap AG, Albert-Ludwigs-Universitaet FreiburgInventors: Theodor Lutze, Dirk Schauer, Alexander Disch, Holger Reinecke, Claas Mueller
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Publication number: 20100144079Abstract: The invention relates to a method for the precision processing of substrates, in particular for the microstructuring of thin layers, local dopant introduction and also local application of a metal nucleation layer in which a liquid-assisted laser, i.e. laser irradiation of a substrate which is covered in the regions to be processed by a suitable reactive liquid, is implemented.Type: ApplicationFiled: March 6, 2008Publication date: June 10, 2010Applicants: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V., ALBERT-LUDWIGS-UNIVERSITÄT FREIBURGInventors: Kuno Mayer, Monica Aleman, Daniel Kray, Stefan Glunz, Ansgar Mette, Ralf Preu, Andreas Grohe
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Publication number: 20100005885Abstract: In a method for determining the relative position, velocity, acceleration, and/or the rotation center of a body displaceable in a three dimensional space, at least twelve linear acceleration sensors are provided and in each case arranged on a position which is stationarily fixed with respect to the body. At least one acceleration measurement signal is captured by the linear acceleration sensors. A position, velocity, acceleration, and/or rotation center signal is generated for the body from the acceleration measurement signal and data describing the position and orientation of the linear acceleration sensors in the body-fixed coordinate system.Type: ApplicationFiled: May 19, 2006Publication date: January 14, 2010Applicant: ALBERT-LUDWIGS-UNIVERSITÄT FREIBURGInventors: Christian Peters, Alexander Buhmann, Yiannos Manoli
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Publication number: 20080292671Abstract: The invention relates to a medicotechnical product having an antimicrobial finish of a complex material of metal nanoparticles and macromolecules, the macromolecules being formed at least partially from a polyamino acid.Type: ApplicationFiled: September 7, 2006Publication date: November 27, 2008Applicants: AESCULAP AG & CO. KG, ALBERT-LUDWIG-UNIVERSITÄT FREIBURGInventors: Chau Hon Ho, Erich K. Odermatt, Rainer Bargon, Jorg Tiller
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Publication number: 20080128014Abstract: The present invention relates to an arrangement having at least one solar cell, which is formed by a first sequence of differently doped layers (1, 2, 11, 12) on a substrate (6, 16), and at least one bypass diode, which is connected to the solar cell, particularly in a monolithic, series-connected solar module. The arrangement is characterised in that the bypass diode is formed by a second sequence of layers (4, 5, 13, 14), which is arranged between the substrate (6, 16) and the first layer sequence (1, 2, 11, 12). With the proposed arrangement monolithic, series-connected solar modules can be formed at a very low loss of active receiving surface, the solar cells of which are protected by bypass diodes.Type: ApplicationFiled: November 3, 2005Publication date: June 5, 2008Applicants: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V., RWE Space Solar Power GmbH, Albert-Ludwigs-Universität FreiburgInventors: Sascha Van Riesen, Rudiger Lockenhoff, Gerhard Strobl, Ron Dietrich, Wolfgang Koestler
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Patent number: 7371330Abstract: A particle sedimentation apparatus includes a rotation body rotatable about a rotation axis and a separation chamber formed in the rotation body, to cause sedimentation of particle suspension in the separation chamber upon rotation of the rotation body. The particles accumulate in a radially outward region of the separation chamber. A flow-rate-determining inflow channel having azimuthal path length with an inflow channel inlet and an inflow channel outlet is formed in the rotation body, the inflow channel inlet being arranged radially further inwardly than the inflow channel outlet, the inflow channel outlet being fluidically connected to the separation chamber and formed to introduce particle suspension into the separation chamber upon rotation of the rotation body. Furthermore, an outflow channel is formed in the rotation body with an outflow channel inlet and an outflow channel outlet, to at least partially drain supernatant liquid formed by sedimentation from the separation chamber.Type: GrantFiled: March 23, 2007Date of Patent: May 13, 2008Assignee: Albert-Ludwigs-Universitaet FreiburgInventors: Jens Ducree, Roland Zengerle, Stefan Haeberle, Thilo Brenner