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).

  • Publication number: 20080225478
    Abstract: 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: Application
    Filed: February 27, 2008
    Publication date: September 18, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Carsten Goettert, Harald Huels, Hans-Guenter Kraemer, Manfred Ries, Rolf Schaefer
  • Publication number: 20080217288
    Abstract: 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: Application
    Filed: April 18, 2008
    Publication date: September 11, 2008
    Inventors: Marcus Breuer, Guenther Crolly, Michael Haag, Manfred Jung, Thorsten Muehge, Johannes Paul, Joerg Sauerwein, Rolf Schaefer, Alexandra Welzel
  • Publication number: 20080122438
    Abstract: 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: Application
    Filed: February 13, 2008
    Publication date: May 29, 2008
    Inventor: Rolf Schaefer
  • Patent number: 7355399
    Abstract: 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: Grant
    Filed: March 12, 2007
    Date of Patent: April 8, 2008
    Assignee: International Business Machines Corporation
    Inventor: Rolf Schaefer
  • Publication number: 20080054897
    Abstract: 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: Application
    Filed: April 21, 2007
    Publication date: March 6, 2008
    Inventors: Guenther Crolly, Thorsten Muehge, Rolf Schaefer, Ernst-Dieter Weissenberger
  • Publication number: 20070268017
    Abstract: 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: Application
    Filed: October 29, 2004
    Publication date: November 22, 2007
    Inventors: Andreas Dietzel, Marcus Breuer, Hubert Grimm, Karl-Heinz Lehnhert, Nikolaus Luckner, Rolf Schaefer, Guenther Michaelis
  • Patent number: 7257882
    Abstract: 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: Grant
    Filed: March 22, 2006
    Date of Patent: August 21, 2007
    Assignee: International Business Machines Corporation
    Inventors: Alexandra Welzel, Marcus Breuer, Guenther Crolly, Michael Haag, Manfred Jung, Rolf Schaefer
  • Publication number: 20070152665
    Abstract: 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: Application
    Filed: March 12, 2007
    Publication date: July 5, 2007
    Inventor: Rolf Schaefer
  • Patent number: 7208948
    Abstract: 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: Grant
    Filed: November 5, 2004
    Date of Patent: April 24, 2007
    Assignee: International Business Machines Corporation
    Inventor: Rolf Schaefer
  • Publication number: 20060261921
    Abstract: 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: Application
    Filed: March 22, 2006
    Publication date: November 23, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINE CORPORATION
    Inventors: Alexandra Welzel, Marcus Breuer, Guenther Crolly, Michael Haag, Manfred Jung, Rolf Schaefer
  • Publication number: 20060171081
    Abstract: 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: Application
    Filed: January 20, 2006
    Publication date: August 3, 2006
    Inventors: Marcus Brcuer, Guenther Crolly, Michael Haag, Manfred Jung, Thorsten Muehge, Johannes Paul, Joerg Sauerwein, Rolf Schaefer, Alexandra Welzel
  • Publication number: 20060126229
    Abstract: 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: Application
    Filed: November 7, 2005
    Publication date: June 15, 2006
    Inventors: Hubert Grimm, Jan Marien, Rolf Schaefer
  • Publication number: 20060087318
    Abstract: 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: Application
    Filed: October 21, 2005
    Publication date: April 27, 2006
    Inventors: Guenther Crolly, Thorsten Muehge, Rolf Schaefer, Ernst-Diester Weissenberger
  • Publication number: 20060044700
    Abstract: 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: Application
    Filed: August 30, 2005
    Publication date: March 2, 2006
    Inventors: Johannes Paul, Rolf Schaefer
  • Publication number: 20050140363
    Abstract: 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: Application
    Filed: September 15, 2004
    Publication date: June 30, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hubert Grimm, Johannes Paul, Rolf Schaefer
  • Publication number: 20050134261
    Abstract: 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: Application
    Filed: November 5, 2004
    Publication date: June 23, 2005
    Inventor: Rolf Schaefer
  • Publication number: 20040027715
    Abstract: 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: Application
    Filed: August 12, 2002
    Publication date: February 12, 2004
    Applicant: INTERNATIONAL BUSINESS MACHINES
    Inventors: April Dawn Hixson-Goldsmith, Matthew Walter Last, Murali Ramasubramanian, Rolf Schaefer
  • Patent number: 6199160
    Abstract: 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: Grant
    Filed: April 6, 1994
    Date of Patent: March 6, 2001
    Assignee: International Business Machines Corporation
    Inventors: Heimo Echensperger, Wolfgang Eibach, Michael Fox, Hans H. Harz, Rolf Schaefer, Ralf Streit
  • Patent number: 5151522
    Abstract: 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: Grant
    Filed: July 22, 1991
    Date of Patent: September 29, 1992
    Assignees: Chemisches Institut Schaefer AG, Joh. A. Benckiser GmbH
    Inventors: Hans Hitz, Rolf Schaefer, Heinrich Baust, Wolfgang Gross
  • Patent number: 5049315
    Abstract: 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: Grant
    Filed: June 8, 1990
    Date of Patent: September 17, 1991
    Assignees: Chemisches Instutut Schaefer AG, Joh. A. Benskiser GmbH
    Inventors: Hans Hitz, Rolf Schaefer, Heinrich Baust, Wolfgang Gross
  • Patent number: 4933311
    Abstract: 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: Grant
    Filed: April 26, 1989
    Date of Patent: June 12, 1990
    Assignee: Shell Oil Company
    Inventors: Johannes A. van Doorn, Richard L. Wife