Patents by Inventor Rolf Schaefer
Rolf Schaefer 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: 7957144Abstract: A heat exchange system for blade server systems is disclosed, wherein said blade server system contains a plurality of server blades arranged in a blade center, wherein the heat exchange system comprises first heat sink associated to each of said plurality of server blades, and whereby the first heat sink are adapted to collect heat emitted from heat emitting devices on said associated server blade; means for transferring heat from the heat emitting devices to the first heat sink; and a liquid cooled second heat sink associated to said blade center, whereby said first heat sink are connected to said second heat sink by thermal coupling.Type: GrantFiled: February 27, 2008Date of Patent: June 7, 2011Assignee: International Business Machines CorporationInventors: Carsten Goettert, Harald Huels, Hans-Guenter Kraemer, Manfred Ries, Rolf Schaefer
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Patent number: 7924534Abstract: A magnetic sensor having at least a first and at least a second structure of soft-magnetic material that are spatially separated and define a first gap therebetween. The first and second structure of soft-magnetic material are adapted to form a gap magnetic field pointing in a direction substantially perpendicular to the elongation of the first gap in the vicinity of the first gap in response to an external magnetic field. Additionally, the magnetic sensor comprises at least a first magnetoresistive layered structure that is positioned in the vicinity of the first gap including inside the first gap and that is sensitive to the gap magnetic field.Type: GrantFiled: July 9, 2008Date of Patent: April 12, 2011Assignee: International Business Machines CorporationInventors: Hubert Grimm, Jan Marien, Rolf Schaefer
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Patent number: 7898249Abstract: Methods of reorienting ferromagnetic layers of a plurality of magnetoresistive elements and structures formed by the methods. The plurality of magnetoresistive elements, preferably GMR multilayer elements, are manufactured and arranged on a planar substrate. The method effectively allows selective orientation and reorientation of distinct ferromagnetic layers of a subset of the magnetoresistive elements on the substrate. The methods make either use of subsequent annealing processes making use of magnetic fields pointing in different directions. Prior to application of a subsequent annealing process, a complimentary subset of magnetoresistive elements is effectively shielded by selective deposition of a soft-magnetic shielding layer. Alternatively, a single annealing process can be performed when an externally applied magnetic field is locally modified by soft-magnetic structures, such as fluxguides.Type: GrantFiled: July 16, 2008Date of Patent: March 1, 2011Assignee: International Business Machines CorporationInventors: Johannes Paul, Rolf Schaefer
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Patent number: 7862119Abstract: The invention relates to a vehicle seat with a back rest having a frame (2) and a lordosis support (6), with the following additional configuration: The lordosis support (6) comprises a pressure plate (9) that is essentially bend resistant in at least the transverse direction of the seat or the Y-direction, forms a supporting surface in the lordosis region of the back rest and is arranged between two side frame parts (3) of the frame (2); there is at least one holding element (5a, 5b) that extends between the side frame parts (3) with a length-variable adjustment section (21), which runs in the Y-direction and connects to the pressure plate (9), and is affixed there at fixing points (30) arranged opposite each other; in an inoperative position, the pressure plate (9) is arranged with a horizontal clearance (11) or a clearance in the X-direction behind the fixing points (30); there is a driving device with which the length of the adjustment section can be shortened as the horizontal clearance is reduced.Type: GrantFiled: April 8, 2006Date of Patent: January 4, 2011Assignee: Alfmeier Prazision Ag Baugruppen und SystemlosungenInventors: Rolf Schäfer, Torsten Aeugle, Andrew Massara, Jürgen Hofmockel, Wolfram-H. Hofschulte, Urban Knöpfle, Michael Wöhrle
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Publication number: 20100143543Abstract: The present invention relates to formulations adapted from the original AREDS formula that are suitable for introduction into a measured amount or volume of a food as well as to foods containing these formulations. These fortified foods are expected to provide patients afflicted with or at risk for developing macular degeneration or other age-related deficiencies with alternative and more palatable sources of the ingredients of the original AREDS formula than those currently available in the market.Type: ApplicationFiled: September 15, 2008Publication date: June 10, 2010Inventors: Hans Hitz, Rolf Schaefer, Christoph Schaefer
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Patent number: 7710113Abstract: A method, a magnetic field sensor, and an electronic device measure and determine the magnitude and/or the direction of a magnetic field. The magnetic sensor is based on at least a first magnetoresistive-layered structure having an electric resistance depending on the magnitude of the magnetic field. The magnetic sensor generates at least a first offset magnetic field. The magnitude and the direction of the offset magnetic field can be modified to compensate the magnetic field. The electric resistance of the magnetoresistive-layered structure depends on the superposition of magnetic field and offset magnetic field. A maximum electric resistance indicates that the magnetic field is compensated by the offset magnetic field. In this case the magnitude of the magnetic field corresponds to the magnitude of the offset magnetic field, and the direction of the magnetic field is given by the reversed direction of the offset magnetic field.Type: GrantFiled: April 21, 2007Date of Patent: May 4, 2010Assignee: International Business Machines CorporationInventors: Guenther Crolly, Thorsten Muehge, Rolf Schaefer, Ernst-Dieter Weissenberger
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Publication number: 20100086512Abstract: The present invention relates to mucomimetic and ophthalmic solutions comprising a cationic multimeric antimicrobial agent such as polyaminopropyl biguanide and a magnesium, calcium or magnesium/calcium complex of an anionic polymer such as hyaluronate, alginate, carboxymethyl cellulose, chondroitin sulfate or mixtures thereof. In specific embodiments, the solutions include additional components such as a surfactant, preferably polysorbate 20, a viscosity-modifying agent, preferably hydroxypropylmethyl cellulose, carboxymethyl cellulose or hydroxyethyl cellulose, a tonicity agent and a buffer. The solutions are biocompatible with and are highly comfortable when administered to mucous membranes, including those of the eye, as well as are effective disinfectants.Type: ApplicationFiled: October 2, 2008Publication date: April 8, 2010Inventor: Rolf Schaefer
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Publication number: 20100045270Abstract: A high-resolution magnetic encoder system includes a magnetic resistive sensor, a fixed suspension, and a mechanism. The magnetic resistive sensor is mounted to the fixed suspension above a magnetic medium having at least one magnetic track. The fixed suspension is attached to the mechanism, such as a housing, a substrate, and/or an electronic board. The sensor is adapted to perform a relative movement with respect to and in close contact to the surface of the magnetic medium. The magnetic medium may be protected by an overcoat layer. The magnetic resistive sensor may be Giant Magnetic-Resistive (GMR) sensor and/or a Tunneling Magnetic-Resistive Sensor (TMR).Type: ApplicationFiled: August 29, 2009Publication date: February 25, 2010Inventors: Andreas Dietzel, Marcus Breuer, Hubert Grimm, Karl-Heinz Lehnhert, Nikolaus Luckner, Rolf Schaefer, Guenther Michaelis
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Patent number: 7629789Abstract: A magnetoresistive assembly includes at least a first and a second magnetoresistive element formed on a common substrate, the at least first magnetoresistive element comprising a first pinned ferromagnetic layer being magnetized in a first direction, the at least second magnetoresistive element comprising a second pinned ferromagnetic layer being magnetized in a second direction different than the first direction.Type: GrantFiled: July 16, 2008Date of Patent: December 8, 2009Assignee: International Business Machines CorporationInventors: Johannes Paul, Rolf Schaefer
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Patent number: 7612555Abstract: A high-resolution magnetic encoder system includes a magnetic resistive sensor, a fixed suspension, and a mechanism. The magnetic resistive sensor is mounted to the fixed suspension above a magnetic medium having at least one magnetic track. The fixed suspension is attached to the mechanism, such as a housing, a substrate, and/or an electronic board. The sensor is adapted to perform a relative movement with respect to and in close contact to the surface of the magnetic medium. The magnetic medium may be protected by an overcoat layer. The magnetic resistive sensor may be Giant Magnetic-Resistive (GMR) sensor and/or a Tunneling Magnetic-Resistive Sensor (TMR).Type: GrantFiled: October 29, 2004Date of Patent: November 3, 2009Assignee: International Business Machines CorporationInventors: Andreas Dietzel, Marcus Breuer, Hubert Grimm, Karl-Heinz Lehnhert, Nikolaus Luckner, Rolf Schaefer, Guenther Michaelis
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Publication number: 20090232871Abstract: The invention relates to highly biocompatible or biophilic un-cross-linked or cross-linked polymers comprising one or more side-chain active acrylic amino acids of formula I wherein: X is —NH(CH2)4—, —O—C6H4—CH2—, —OCH2—, —O—CH(CH3)—, —S—CH2—, —O-proline, and R is H or CH3; and wherein the polymer further includes a free radical initiator and, optionally, a cross-linking agent having a plurality of polymerizable ethylenically unsaturated groups. The invention further concerns various highly biocompatible, cross-linked co-polymers comprising one or more monomers of formula I, and one or more other polymerizable monomers. Uses of such polymers and co-polymers for the production of contact lenses, intraocular lenses, implants, wound healing slabs, additives for food and cosmetics, conductive plastics, spinnable fibers, and the like are disclosed.Type: ApplicationFiled: May 22, 2006Publication date: September 17, 2009Inventors: Hans Hitz, Rolf Schaefer, Christoph Schaefer
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Publication number: 20090161261Abstract: A magnetic sensor having at least a first and at least a second structure of soft-magnetic material that are spatially separated and define a first gap therebetween. The first and second structure of soft-magnetic material are adapted to form a gap magnetic field pointing in a direction substantially perpendicular to the elongation of the first gap in the vicinity of the first gap in response to an external magnetic field. Additionally, the magnetic sensor comprises at least a first magnetoresistive layered structure that is positioned in the vicinity of the first gap including inside the first gap and that is sensitive to the gap magnetic field.Type: ApplicationFiled: July 9, 2008Publication date: June 25, 2009Inventors: Hubert Grimm, Jan Marien, Rolf Schaefer
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Patent number: 7511486Abstract: A non-contact sensor system according to one embodiment comprises a substrate having at least one sensor element, the at least one sensor element being directed towards at least one data track on a medium positioned opposite the at least one sensor element, wherein the substrate and the medium each carry at least one magnetic track, wherein orientations of magnetizations of the magnetic tracks are such that the substrate experiences a force away from the medium. Other embodiments are also presented.Type: GrantFiled: February 13, 2008Date of Patent: March 31, 2009Assignee: International Business Machines CorporationInventor: Rolf Schaefer
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Patent number: 7505233Abstract: A magnetic sensor having at least a first and at least a second structure of soft-magnetic material that are spatially separated and define a first gap therebetween. The first and second structure of soft-magnetic material are adapted to form a gap magnetic field pointing in a direction substantially perpendicular to the elongation of the first gap in the vicinity of the first gap in response to an external magnetic field. Additionally, the magnetic sensor comprises at least a first magnetoresistive layered structure that is positioned in the vicinity of the first gap including inside the first gap and that is sensitive to the gap magnetic field.Type: GrantFiled: November 7, 2005Date of Patent: March 17, 2009Assignee: International Business Machines CorporationInventors: Hubert Grimm, Jan Marien, Rolf Schaefer
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Patent number: 7504824Abstract: A method, a magnetic field sensor, and an electronic device measure and determine the magnitude and/or the direction of a magnetic field. The magnetic sensor is based on at least a first magnetoresistive-layered structure having an electric resistance depending on the magnitude of the magnetic field. The magnetic sensor generates at least a first offset magnetic field. The magnitude and the direction of the offset magnetic field can be modified to compensate the magnetic field. The electric resistance of the magnetoresistive-layered structure depends on the superposition of magnetic field and offset magnetic field. A maximum electric resistance indicates that the magnetic field is compensated by the offset magnetic field. In this case the magnitude of the magnetic field corresponds to the magnitude of the offset magnetic field, and the direction of the magnetic field is given by the reversed direction of the offset magnetic field.Type: GrantFiled: October 21, 2005Date of Patent: March 17, 2009Assignee: International Business Machines CorporationInventors: Guenther Crolly, Thorsten Muehge, Rolf Schaefer, Ernst-Dieter Weissenberger
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Patent number: 7492554Abstract: A magnetic field sensor device comprising a substrate having at least a first tilted planar section having a surface normal at a first angle with respect to a surface normal of the substrate, and at least a first magnetoresistive layered structure positioned at the at least first tilted section. Methods for manufacturing magnetic field sensor devices are also presented.Type: GrantFiled: January 20, 2006Date of Patent: February 17, 2009Assignee: International Business Machines CorporationInventors: Marcus Breuer, Guenther Crolly, Michael Haag, Manfred Jung, Thorsten Muehge, Johannes Paul, Joerg Sauerwein, Rolf Schaefer, Alexandra Welzel
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Patent number: 7474094Abstract: Methods of reorienting ferromagnetic layers of a plurality of magnetoresistive elements and structures formed by the methods. The plurality of magnetoresistive elements, preferably GMR multilayer elements, are manufactured and arranged on a planar substrate. The method effectively allows selective orientation and reorientation of distinct ferromagnetic layers of a subset of the magnetoresistive elements on the substrate. The methods make either use of subsequent annealing processes making use of magnetic fields pointing in different directions. Prior to application of a subsequent annealing process, a complimentary subset of magnetoresistive elements is effectively shielded by selective deposition of a soft-magnetic shielding layer. Alternatively, a single annealing process can be performed when an externally applied magnetic field is locally modified by soft-magnetic structures, such as fluxguides.Type: GrantFiled: August 30, 2005Date of Patent: January 6, 2009Assignee: International Business Machines CorporationInventors: Johannes Paul, Rolf Schaefer
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Publication number: 20080271818Abstract: Methods of reorienting ferromagnetic layers of a plurality of magnetoresistive elements and structures formed by the methods. The plurality of magnetoresistive elements, preferably GMR multilayer elements, are manufactured and arranged on a planar substrate. The method effectively allows selective orientation and reorientation of distinct ferromagnetic layers of a subset of the magnetoresistive elements on the substrate. The methods make either use of subsequent annealing processes making use of magnetic fields pointing in different directions. Prior to application of a subsequent annealing process, a complimentary subset of magnetoresistive elements is effectively shielded by selective deposition of a soft-magnetic shielding layer. Alternatively, a single annealing process can be performed when an externally applied magnetic field is locally modified by soft-magnetic structures, such as fluxguides.Type: ApplicationFiled: July 16, 2008Publication date: November 6, 2008Inventors: Johannes Paul, Rolf Schaefer
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Publication number: 20080273279Abstract: A magnetoresistive assembly includes at least a first and a second magnetoresistive element formed on a common substrate, the at least first magnetoresistive element comprising a first pinned ferromagnetic layer being magnetized in a first direction, the at least second magnetoresistive element comprising a second pinned ferromagnetic layer being magnetized in a second direction different than the first direction.Type: ApplicationFiled: July 16, 2008Publication date: November 6, 2008Inventors: Johannes Paul, Rolf Schaefer
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Publication number: 20080259481Abstract: A method of measuring an external magnetic field pointing in a first direction substantially parallel to a surface normal to an at least first magnetoresistive layered structure deposited on a planar substrate, the method comprising: applying the external magnetic field to the planar substrate having at least one structure of soft-magnetic material being adapted to at least partially deflect the external magnetic field in a direction substantially parallel to the surface of the at least first magnetoresistive layered structure, the at least one structure of soft-magnetic material being arranged in the vicinity of the at least first magnetoresistive layered structure; measuring the electrical resistance of the at least first magnetoresistive layered structure, the electrical resistance depending on the magnitude and/or direction of magnetic field being deflected by the at least one structure of soft-magnetic material, and determining at least one of the magnitude and direction of the external magnetic field usType: ApplicationFiled: July 9, 2008Publication date: October 23, 2008Inventors: Hubert Grimm, Jan Marien, Rolf Schaefer