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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Publication number: 20080225478Abstract: 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 sinks associated to each of said plurality of server blades, and whereby the first heat sinks 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 sinks; and a liquid cooled second heat sink associated to said blade center, whereby said first heat sinks are connected to said second heat sink by thermal coupling.Type: ApplicationFiled: February 27, 2008Publication date: September 18, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Carsten Goettert, Harald Huels, Hans-Guenter Kraemer, Manfred Ries, Rolf Schaefer
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Publication number: 20080217288Abstract: A method of manufacturing a magnetic field sensor device in one embodiment includes applying a mask on a substrate, performing a wet etching procedure on the substrate for generating at least a first groove having tilted side walls, and depositing at least one layer of magnetoresistive material onto a section of the surface of at least a first tilted side wall of the groove. A method of manufacturing a magnetic field sensor device on a substrate having a plurality of tilted planar sections, each of the tilted planar sections having a surface normal angled with respect to a surface normal of the substrate is also provided.Type: ApplicationFiled: April 18, 2008Publication date: September 11, 2008Inventors: Marcus Breuer, Guenther Crolly, Michael Haag, Manfred Jung, Thorsten Muehge, Johannes Paul, Joerg Sauerwein, Rolf Schaefer, Alexandra Welzel
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Publication number: 20080122438Abstract: 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: ApplicationFiled: February 13, 2008Publication date: May 29, 2008Inventor: Rolf Schaefer
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Patent number: 7355399Abstract: A non-contact sensor system according to one embodiment includes a substrate having a substantially planar surface with at least one sensor element mounted to the substrate, the at least one sensor element being directed by a guiding element towards at least one data track on a substantially planar medium positioned opposite the at least one sensor element, wherein the substantially planar surface of the substrate and the substantially planar surface of 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.Type: GrantFiled: March 12, 2007Date of Patent: April 8, 2008Assignee: International Business Machines CorporationInventor: Rolf Schaefer
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Publication number: 20080054897Abstract: 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: ApplicationFiled: April 21, 2007Publication date: March 6, 2008Inventors: Guenther Crolly, Thorsten Muehge, Rolf Schaefer, Ernst-Dieter Weissenberger
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Publication number: 20070268017Abstract: 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: October 29, 2004Publication date: November 22, 2007Inventors: Andreas Dietzel, Marcus Breuer, Hubert Grimm, Karl-Heinz Lehnhert, Nikolaus Luckner, Rolf Schaefer, Guenther Michaelis
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Patent number: 7257882Abstract: Embodiments of the present invention provide a thin-film coil assembly. The coil assembly includes a substrate, at least two layers of conductive material on top of the substrate, and one layer of insulating material between the two layers of conductive material, wherein the two layers of conductive material are in contact with two interconnects, respectively, which extends substantially vertical to the substrate.Type: GrantFiled: March 22, 2006Date of Patent: August 21, 2007Assignee: International Business Machines CorporationInventors: Alexandra Welzel, Marcus Breuer, Guenther Crolly, Michael Haag, Manfred Jung, Rolf Schaefer
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Publication number: 20070152665Abstract: A non-contact sensor system according to one embodiment includes a substrate having a substantially planar surface with at least one sensor element mounted to the substrate, the at least one sensor element being directed by a guiding element towards at least one data track on a substantially planar medium positioned opposite the at least one sensor element, wherein the substantially planar surface of the substrate and the substantially planar surface of 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.Type: ApplicationFiled: March 12, 2007Publication date: July 5, 2007Inventor: Rolf Schaefer
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Patent number: 7208948Abstract: A non-contact magnetic sensor system according to one embodiment includes a substrate and a magnetic medium spaced from the substrate and having a data track thereon. A sensor element is mounted to the substrate. A guiding element biases the substrate towards the magnetic medium. A first magnetic track is positioned on the substrate. A second magnetic track is positioned on the magnetic medium. Orientations of the magnetizations of the magnetic tracks are such that the substrate experiences a vertical force away from the magnetic medium.Type: GrantFiled: November 5, 2004Date of Patent: April 24, 2007Assignee: International Business Machines CorporationInventor: Rolf Schaefer
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Publication number: 20060261921Abstract: Embodiments of the present invention provide a thin-film coil assembly. The coil assembly includes a substrate, at least two layers of conductive material on top of the substrate, and one layer of insulating material between the two layers of conductive material, wherein the two layers of conductive material are in contact with two interconnects, respectively, which extends substantially vertical to the substrate.Type: ApplicationFiled: March 22, 2006Publication date: November 23, 2006Applicant: INTERNATIONAL BUSINESS MACHINE CORPORATIONInventors: Alexandra Welzel, Marcus Breuer, Guenther Crolly, Michael Haag, Manfred Jung, Rolf Schaefer
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Publication number: 20060171081Abstract: 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: ApplicationFiled: January 20, 2006Publication date: August 3, 2006Inventors: Marcus Brcuer, Guenther Crolly, Michael Haag, Manfred Jung, Thorsten Muehge, Johannes Paul, Joerg Sauerwein, Rolf Schaefer, Alexandra Welzel
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Publication number: 20060126229Abstract: 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: November 7, 2005Publication date: June 15, 2006Inventors: Hubert Grimm, Jan Marien, Rolf Schaefer
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Publication number: 20060087318Abstract: 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: ApplicationFiled: October 21, 2005Publication date: April 27, 2006Inventors: Guenther Crolly, Thorsten Muehge, Rolf Schaefer, Ernst-Diester Weissenberger
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Publication number: 20060044700Abstract: 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: August 30, 2005Publication date: March 2, 2006Inventors: Johannes Paul, Rolf Schaefer
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Publication number: 20050140363Abstract: A magnetic sensor having at least a first and a second magnetoresistive element being non-parallel provides determination of the direction of a magnetic field. The at least first and second magnetoresistive elements are positioned along at least a first and a second elongated gap each of which separating at least a first and a second closely spaced planar area of soft-magnetic material serving as flux guides. The flux guides provide amplification of magnetic field components being perpendicular to the elongated direction of each gap. A variety of various magnetoresitive elements such as AMR elements or GMR-multilayer systems can effectively be used in order to detect the magnitude and/or the direction of the magnetic field. By appropriately designing the geometry of the flux guides, direction dependent gain factors can effectively be realized. This allows for a large detection range and sensitivity of the magnetic sensor.Type: ApplicationFiled: September 15, 2004Publication date: June 30, 2005Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Hubert Grimm, Johannes Paul, Rolf Schaefer
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Publication number: 20050134261Abstract: A non-contact magnetic sensor system according to one embodiment includes a substrate and a magnetic medium spaced from the substrate and having a data track thereon. A sensor element is mounted to the substrate. A guiding element biases the substrate towards the magnetic medium. A first magnetic track is positioned on the substrate. A second magnetic track is positioned on the magnetic medium. Orientations of the magnetizations of the magnetic tracks are such that the substrate experiences a vertical force away from the magnetic medium.Type: ApplicationFiled: November 5, 2004Publication date: June 23, 2005Inventor: Rolf Schaefer
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Publication number: 20040027715Abstract: A method for multi-layer electrodeposition in a single bath is also provided. A substrate is immersed in a bath. An electrodeposition operation is initiated for depositing a first layer of material on the substrate. The electrodeposition operation includes agitating the bath and applying current pulses. The electrodeposition operation is later altered for depositing a second layer of material on the first layer, where the second layer is of a different composition than the first layer. In the altered mode, the current density is changed for altering a composition of material deposited on the substrate, the duration and/or frequency of the current pulses are altered, and the bath is agitated at a different rate of agitation.Type: ApplicationFiled: August 12, 2002Publication date: February 12, 2004Applicant: INTERNATIONAL BUSINESS MACHINESInventors: April Dawn Hixson-Goldsmith, Matthew Walter Last, Murali Ramasubramanian, Rolf Schaefer
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Patent number: 6199160Abstract: The invention relates to a computer system and method for performing multiple tasks. The computer system comprises a host (2), a communication subsystem (3), a plurality of application programs (1, 2), virtual terminal manager (5), virtual terminals (9, 4), an application programming interface (6), and a cross application program (7) as well as a real terminal T. The logical connections L1, L2 of the application programs to their associated virtual terminals are independent from the logical connections of the respective virtual terminals to the real terminal T. The logical connections l3T, l2T are user selectable by positioning of the software controllable switch 11. A plurality of application programs, for example applications programs (A1, A2), are integrated by the cross application program (7) which has access to the respective virtual terminals (4, 9) via the application programming interface (6) and the virtual terminal manager (5).Type: GrantFiled: April 6, 1994Date of Patent: March 6, 2001Assignee: International Business Machines CorporationInventors: Heimo Echensperger, Wolfgang Eibach, Michael Fox, Hans H. Harz, Rolf Schaefer, Ralf Streit
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Patent number: 5151522Abstract: The present invention provides a process for preparing polycarboxylic acid imidazolines of the general formula: ##STR1## wherein X is --Cl, --OH, --O--SO.sub.3 H, --O--PO.sub.3 H.sub.2, --O--CH.sub.2 --CH.sub.2 --COOH, --NH.sub.2, --NHalk or --N(alk).sub.2, alk being an alkyl radical containing up to 6 carbon atoms, n is a whole number of from 2 to 4, R is a C.sub.8 -C.sub.18 hydrocarbon radical which is straight-chained, branched, saturated or one to three times unsaturated, m is a whole number of from 2 to 5, R' is a hydrogen atom or a carboxyl group and R" is a hydrogen atom or a methyl radical. In the process, a compound of the formula ##STR2## in which R, X and n are as defined above, is condensed with about a 2- to 5-fold excess of acrylic acid, methacrylic acid, maleic acid or a mixture thereof.Type: GrantFiled: July 22, 1991Date of Patent: September 29, 1992Assignees: Chemisches Institut Schaefer AG, Joh. A. Benckiser GmbHInventors: Hans Hitz, Rolf Schaefer, Heinrich Baust, Wolfgang Gross
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Patent number: 5049315Abstract: The present invention provides polycarboxylic acid imidazolines of the general formula: ##STR1## wherein X is --Cl, --OH, --O--SO.sub.3 H, --O--PO.sub.3 H.sub.2, --O--CH.sub.2 --CH.sub.2 --COOH, --NH.sub.2, --NHalk or --N(alk).sub.2, alk being an alkyl radical containing up to 6 carbon atoms, n is a whole number of from 2 to 4, R is a C.sub.8 -C.sub.18 hydrocarbon radical which is straight-chained, branched, saturated or one to three times unsaturated, m is a whole number of from 2 to 5, R' is a hydrogen atom or a carboxyl group and R" is a hydrogen atom or a methyl radical. The present invention also provides a process for the preparation of these compounds and cleaning agents containing them.Type: GrantFiled: June 8, 1990Date of Patent: September 17, 1991Assignees: Chemisches Instutut Schaefer AG, Joh. A. Benskiser GmbHInventors: Hans Hitz, Rolf Schaefer, Heinrich Baust, Wolfgang Gross
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Patent number: 4933311Abstract: In the process of producing a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon in the presence of a palladium salt, the anion of a strong non-hydrohalogenic acid and a bis(phosphino)propane, improved polymerization rates are obtained when employing a novel catalyst composition formed from a novel 1,3-bis(phosphino)propane wherein the propane moiety is additionally substituted in the 2 position with two hydrocarbyl substituents.Type: GrantFiled: April 26, 1989Date of Patent: June 12, 1990Assignee: Shell Oil CompanyInventors: Johannes A. van Doorn, Richard L. Wife