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: 9839719Abstract: 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: GrantFiled: May 22, 2006Date of Patent: December 12, 2017Assignee: CIS PHARMA AGInventors: Hans Hitz, Rolf Schäfer, Christoph Schäfer
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Patent number: 9767116Abstract: 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: GrantFiled: October 26, 2016Date of Patent: September 19, 2017Assignee: International Business Machines CorporationInventors: Ralf Eberhard, Erik Rueger, Rolf Schaefer, Christof Schmitt
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Publication number: 20170152335Abstract: 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: ApplicationFiled: February 2, 2017Publication date: June 1, 2017Inventors: Hans Hitz, Rolf Schäfer, Christoph Schäfer
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Patent number: 9536085Abstract: 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: GrantFiled: September 29, 2015Date of Patent: January 3, 2017Assignee: International Business Machines CorporationInventors: Jens-Peter Akelbein, Mathias Dietz, Nils Haustein, Rolf Schaefer, Ruben Straus
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Publication number: 20160019390Abstract: 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: ApplicationFiled: September 29, 2015Publication date: January 21, 2016Inventors: JENS-PETER AKELBEIN, MATHIAS DIETZ, NILS HAUSTEIN, ROLF SCHAEFER, RUBEN STRAUS
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Patent number: 9209715Abstract: 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: GrantFiled: November 8, 2011Date of Patent: December 8, 2015Assignee: International Business Machines CorporationInventors: Carsten Goettert, Harald Huels, Hans-Guenter Kraemer, Manfred Ries, Rolf Schaefer
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Patent number: 9189625Abstract: 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: GrantFiled: September 4, 2013Date of Patent: November 17, 2015Assignee: International Business Machines CorporationInventors: Jens-Peter Akelbein, Mathias Dietz, Nils Haustein, Rolf Schaefer, Ruben Straus
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Patent number: 8980957Abstract: 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: GrantFiled: January 11, 2011Date of Patent: March 17, 2015Assignee: CIS Pharma AGInventors: Rolf Schäfer, Hans Hitz
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Patent number: 8718278Abstract: 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: GrantFiled: December 12, 2011Date of Patent: May 6, 2014Assignee: International Business Machines CorporationInventors: Felix C. Beck, Rolf Schaefer
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Publication number: 20140101158Abstract: 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: ApplicationFiled: September 10, 2013Publication date: April 10, 2014Applicant: International Business Machines CorporationInventors: Hans-Guenter Kraemer, Peter Muench, Rolf Schaefer, Norbert J. Schuld
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Publication number: 20140101766Abstract: 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: ApplicationFiled: September 4, 2013Publication date: April 10, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: JENS - PETER AKELBEIN, MATHIAS DIETZ, NILS HAUSTEIN, ROLF SCHAEFER, RUBEN STRAUS
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Publication number: 20140065226Abstract: 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: ApplicationFiled: March 5, 2012Publication date: March 6, 2014Inventors: Eric Brey, Jennifer J. Kang-Mieler, Victor Perez-Luna, Bin Jiang, Pawel Drapala, Rolf Schäfer, Hans Hitz
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Publication number: 20140039386Abstract: 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: ApplicationFiled: February 14, 2012Publication date: February 6, 2014Applicant: CIS Pharma AGInventor: Rolf Schäfer
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Publication number: 20120329902Abstract: 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: ApplicationFiled: January 11, 2011Publication date: December 27, 2012Inventors: Rolf Schäfer, Hans Hitz
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Patent number: 8274277Abstract: 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: August 29, 2009Date of Patent: September 25, 2012Assignee: 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: 20120231072Abstract: 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: ApplicationFiled: March 11, 2011Publication date: September 13, 2012Applicants: Chemisches Institut Schaefer AG, Illinois Institute of TechnologyInventors: Jennifer J. KANG-MIELER, Eric BREY, Victor PEREZ-LUNA, Bin JIANG, Pawel DRAPALA, Hans Hitz, Rolf Schaefer
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Publication number: 20120189118Abstract: 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: ApplicationFiled: December 12, 2011Publication date: July 26, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Felix C. BECK, Rolf SCHAEFER
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Publication number: 20120113594Abstract: 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: ApplicationFiled: November 8, 2011Publication date: May 10, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Carsten Goettert, Harald Huels, Hans-Guenter Kraemer, Manfred Ries, Rolf Schaefer
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Patent number: 8110119Abstract: 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: GrantFiled: April 18, 2008Date of Patent: February 7, 2012Assignee: 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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Publication number: 20110257125Abstract: 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: ApplicationFiled: June 24, 2011Publication date: October 20, 2011Inventor: Rolf Schaefer