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).

  • Patent number: 9189625
    Abstract: In a data management system, examination of first data for malicious content by a malicious content scanner is initiated in response to a request to write first data to a data storage device. In response to the examination revealing no malicious content in the first data, the first data, a first signature representative of a version of the malicious content scanner at a time of the examination of the first data, and second data linking the first signature to the first data as read-only data are written to the data storage device.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: November 17, 2015
    Assignee: International Business Machines Corporation
    Inventors: Jens-Peter Akelbein, Mathias Dietz, Nils Haustein, Rolf Schaefer, Ruben Straus
  • Patent number: 8718278
    Abstract: A method for an encryption of a data stream is provided. The method includes: providing the data stream, providing at least two first random number generators having a first cryptographic strength, wherein each of the at least two first random number generators is switchable between states including a clocked state and a working state, and providing a second random number generator having a second cryptographic strength, wherein the second cryptographic strength is higher than the cryptographic strength. The method further includes switching the states of the at least two first random number generators using an output of the second random number generator and using an XOR-function for combining the data stream with an output of one of the at least two first random number generators, which is in the working state, such that a ciphered data stream is created.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: May 6, 2014
    Assignee: International Business Machines Corporation
    Inventors: Felix C. Beck, Rolf Schaefer
  • Publication number: 20140101766
    Abstract: In a data management system, examination of first data for malicious content by a malicious content scanner is initiated in response to a request to write first data to a data storage device. In response to the examination revealing no malicious content in the first data, the first data, a first signature representative of a version of the malicious content scanner at a time of the examination of the first data, and second data linking the first signature to the first data as read-only data are written to the data storage device.
    Type: Application
    Filed: September 4, 2013
    Publication date: April 10, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: JENS - PETER AKELBEIN, MATHIAS DIETZ, NILS HAUSTEIN, ROLF SCHAEFER, RUBEN STRAUS
  • Publication number: 20140101158
    Abstract: A mechanism is provided for file handling in a hierarchical storage system. A user virtual file system scans, reads and analyses data or user behavior to create or modify at least one rule or metadata. The user virtual file system identifies logical or temporal relationships of files based on the at least one rule or the metadata. The user virtual file system groups identified related files in the at least one container. The user virtual file system moves the at least one container to different tiers of storage based on the at least one rule or the metadata.
    Type: Application
    Filed: September 10, 2013
    Publication date: April 10, 2014
    Applicant: International Business Machines Corporation
    Inventors: Hans-Guenter Kraemer, Peter Muench, Rolf Schaefer, Norbert J. Schuld
  • Patent number: 8274277
    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: Grant
    Filed: August 29, 2009
    Date of Patent: September 25, 2012
    Assignee: International Business Machines Corporation
    Inventors: Andreas Dietzel, Marcus Breuer, Hubert Grimm, Karl-Heinz Lehnhert, Nikolaus Luckner, Rolf Schaefer, Guenther Michaelis
  • Publication number: 20120231072
    Abstract: A thermo-responsive hydrogel, including a biocompatible monomer and/or polymer having an amino acid side chain. The hydrogel is thermo-responsive at a physiological temperature, and can include, incorporate, or encapsulate a treatment agent, such as a drug composition, a biomolecule, and/or a nanoparticle. The hydrogel is useful in delivering the treatment agent. The hydrogel is in a first physicochemical state for administration to a mammal. The hydrogel is thermo-responsive at a physiological temperature of the mammal, and changes to a second physicochemical state that is more solid than the first physicochemical state. In the second physicochemical state the thermo-responsive hydrogel releases the treatment agent.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 13, 2012
    Applicants: Chemisches Institut Schaefer AG, Illinois Institute of Technology
    Inventors: Jennifer J. KANG-MIELER, Eric BREY, Victor PEREZ-LUNA, Bin JIANG, Pawel DRAPALA, Hans Hitz, Rolf Schaefer
  • Publication number: 20120189118
    Abstract: A method for an encryption of a data stream is provided. The method includes: providing the data stream, providing at least two first random number generators having a first cryptographic strength, wherein each of the at least two first random number generators is switchable between states including a clocked state and a working state, and providing a second random number generator having a second cryptographic strength, wherein the second cryptographic strength is higher than the cryptographic strength. The method further includes switching the states of the at least two first random number generators using an output of the second random number generator and using an XOR-function for combining the data stream with an output of one of the at least two first random number generators, which is in the working state, such that a ciphered data stream is created.
    Type: Application
    Filed: December 12, 2011
    Publication date: July 26, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Felix C. BECK, Rolf SCHAEFER
  • Publication number: 20120113594
    Abstract: An apparatus and process are disclosed that relates to a thermoelectric converter for converting thermal energy into electric energy. The apparatus includes at least one magnetic circuit including magnetic flux; at least one electric coil coupled to the at least one magnetic circuit; a magnetic switch coupled to the at least one magnetic circuit which loads the at least one electric coil with magnetic flux of the at least one magnetic circuit depending on a temperature of the magnetic switch, wherein the magnetic switch has a ferromagnetic state below a critical temperature (Tc) and a paramagnetic state above the critical temperature (Tc).
    Type: Application
    Filed: November 8, 2011
    Publication date: May 10, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Carsten Goettert, Harald Huels, Hans-Guenter Kraemer, Manfred Ries, Rolf Schaefer
  • Patent number: 8110119
    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: Grant
    Filed: April 18, 2008
    Date of Patent: February 7, 2012
    Assignee: International Business Machines Corporation
    Inventors: Marcus Breuer, Guenther Crolly, Michael Haag, Manfred Jung, Thorsten Muehge, Johannes Paul, Joerg Sauerwein, Rolf Schaefer, Alexandra Welzel
  • Publication number: 20110257125
    Abstract: 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, a viscosity-modifying agent, 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: Application
    Filed: June 24, 2011
    Publication date: October 20, 2011
    Inventor: Rolf Schaefer
  • Patent number: 7957144
    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 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: Grant
    Filed: February 27, 2008
    Date of Patent: June 7, 2011
    Assignee: International Business Machines Corporation
    Inventors: Carsten Goettert, Harald Huels, Hans-Guenter Kraemer, Manfred Ries, Rolf Schaefer
  • Patent number: 7924534
    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: Grant
    Filed: July 9, 2008
    Date of Patent: April 12, 2011
    Assignee: International Business Machines Corporation
    Inventors: Hubert Grimm, Jan Marien, Rolf Schaefer
  • Patent number: 7898249
    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: Grant
    Filed: July 16, 2008
    Date of Patent: March 1, 2011
    Assignee: International Business Machines Corporation
    Inventors: Johannes Paul, Rolf Schaefer
  • Publication number: 20100143543
    Abstract: 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: Application
    Filed: September 15, 2008
    Publication date: June 10, 2010
    Inventors: Hans Hitz, Rolf Schaefer, Christoph Schaefer
  • Patent number: 7710113
    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: Grant
    Filed: April 21, 2007
    Date of Patent: May 4, 2010
    Assignee: International Business Machines Corporation
    Inventors: Guenther Crolly, Thorsten Muehge, Rolf Schaefer, Ernst-Dieter Weissenberger
  • Publication number: 20100086512
    Abstract: 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: Application
    Filed: October 2, 2008
    Publication date: April 8, 2010
    Inventor: Rolf Schaefer
  • Publication number: 20100045270
    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: August 29, 2009
    Publication date: February 25, 2010
    Inventors: Andreas Dietzel, Marcus Breuer, Hubert Grimm, Karl-Heinz Lehnhert, Nikolaus Luckner, Rolf Schaefer, Guenther Michaelis
  • Patent number: 7629789
    Abstract: 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: Grant
    Filed: July 16, 2008
    Date of Patent: December 8, 2009
    Assignee: International Business Machines Corporation
    Inventors: Johannes Paul, Rolf Schaefer
  • Patent number: 7612555
    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: Grant
    Filed: October 29, 2004
    Date of Patent: November 3, 2009
    Assignee: International Business Machines Corporation
    Inventors: Andreas Dietzel, Marcus Breuer, Hubert Grimm, Karl-Heinz Lehnhert, Nikolaus Luckner, Rolf Schaefer, Guenther Michaelis
  • Publication number: 20090232871
    Abstract: 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: Application
    Filed: May 22, 2006
    Publication date: September 17, 2009
    Inventors: Hans Hitz, Rolf Schaefer, Christoph Schaefer