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: 9839719
    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: Grant
    Filed: May 22, 2006
    Date of Patent: December 12, 2017
    Assignee: CIS PHARMA AG
    Inventors: Hans Hitz, Rolf Schäfer, Christoph Schäfer
  • Patent number: 9767116
    Abstract: Responsive to receiving an identification of a new state identifier associated with the state of an object within a file from a child node, a master node updates a current state identifier for the object to the new state identifier in the master node. Responsive to a predefined user specification indicating that the new state identifier is to be broadcast to each remaining child node of a subset of child nodes in a plurality of child nodes that have a copy of the object, the master node identifies the subset of child nodes in the plurality of child nodes that have a copy of the object in the master node. The master node then broadcasts the new state identifier to the subset of child nodes that have a copy of the object.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: September 19, 2017
    Assignee: International Business Machines Corporation
    Inventors: Ralf Eberhard, Erik Rueger, Rolf Schaefer, Christof Schmitt
  • Publication number: 20170152335
    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. 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: February 2, 2017
    Publication date: June 1, 2017
    Inventors: Hans Hitz, Rolf Schäfer, Christoph Schäfer
  • Patent number: 9536085
    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 29, 2015
    Date of Patent: January 3, 2017
    Assignee: International Business Machines Corporation
    Inventors: Jens-Peter Akelbein, Mathias Dietz, Nils Haustein, Rolf Schaefer, Ruben Straus
  • Publication number: 20160019390
    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 29, 2015
    Publication date: January 21, 2016
    Inventors: JENS-PETER AKELBEIN, MATHIAS DIETZ, NILS HAUSTEIN, ROLF SCHAEFER, RUBEN STRAUS
  • Patent number: 9209715
    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: Grant
    Filed: November 8, 2011
    Date of Patent: December 8, 2015
    Assignee: International Business Machines Corporation
    Inventors: Carsten Goettert, Harald Huels, Hans-Guenter Kraemer, Manfred Ries, Rolf Schaefer
  • 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: 8980957
    Abstract: The subject invention relates to a method of preparing a biocompatible polymer comprising epsilon-linked L-lysine having free alpha-amino and carboxy functions. The invention further encompasses the resulting biocompatible polymer and articles made from the polymer, in particular contact and intraocular lenses.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: March 17, 2015
    Assignee: CIS Pharma AG
    Inventors: Rolf Schäfer, Hans Hitz
  • 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: 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
  • 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: 20140065226
    Abstract: A thermo-responsive hydrogel, including a biocompatible monomer and/or polymer having a side chain-linked amino acid. 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 nano-particle. 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 5, 2012
    Publication date: March 6, 2014
    Inventors: Eric Brey, Jennifer J. Kang-Mieler, Victor Perez-Luna, Bin Jiang, Pawel Drapala, Rolf Schäfer, Hans Hitz
  • Publication number: 20140039386
    Abstract: The present invention relates to safety delivery systems for intracameral administration of an appropriate dose of cefuroxime subsequent to cataract and other eye surgery. A preferred embodiment of an cefuroxime safety delivery system according to the invention comprises (a) a perforable sterile vial sterile-filled with a measured amount of cefuroxime, (b) a reconstitution syringe with a male luer fitting sterile-filled with 0.1 ml of isotonic salt solution per mg cefuroxime in the perforable vial and a vial adapter with a female luer fitting or one or more needles with female luer fitting, and (c) one or more sterilized delivery syringes with male luer fitting, each delivery syringe being capable of holding at least 0.1 ml of ejectable liquid and containing a marking indicating a fill volume of 0.1 ml of ejectable liquid.
    Type: Application
    Filed: February 14, 2012
    Publication date: February 6, 2014
    Applicant: CIS Pharma AG
    Inventor: Rolf Schäfer
  • Publication number: 20120329902
    Abstract: The subject invention relates to a method of preparing a biocompatible polymer comprising epsilon-linked L-lysine having free alpha-amino and carboxy functions. The invention further encompasses the resulting biocompatible polymer and articles made from the polymer, in particular contact and intraocular lenses.
    Type: Application
    Filed: January 11, 2011
    Publication date: December 27, 2012
    Inventors: Rolf Schäfer, Hans Hitz
  • 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