Patents by Inventor Christopher S. Johnson

Christopher S. Johnson 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: 20140350832
    Abstract: Traffic management reports are created from data provided by vehicle sensor devices placed at different fixed locations in a region. Data of vehicles that pass each of the vehicle sensor devices are captured and communicated to a central computer database. At the central computer database, traffic management reports are periodically created from the vehicle data. Each traffic management report incorporates vehicle data from a plurality of vehicles. The vehicle data is for a plurality of previous, non-current times so as to allow for analysis of past vehicle data.
    Type: Application
    Filed: June 10, 2014
    Publication date: November 27, 2014
    Inventors: Christopher S. JOHNSON, Jason S. GEIGER, John T. GRAEF
  • Publication number: 20140308649
    Abstract: New methods and systems are disclosed for improved assessments of student progress in education. Using a new concept called a cumulative test, examinee ability may be measured by combining discrete measures into one test representing ability measured over an extended period of time. (FIG. 1.) Many assessment items and corresponding responses from various different test forms may contribute to a cumulative test. The discrete or “snapshot” tests taken into account preferably are given over an extended period such as a school year, in different classes, schools and even districts. (FIG. 2.) There is no requirement that examinees take the same items or any particular set of items to implement the cumulative test. Item Response Theory (IRT) may be used to estimate ability scores for cumulative tests (FIG. 3.).
    Type: Application
    Filed: April 11, 2014
    Publication date: October 16, 2014
    Applicant: Assessment Technology Incorporated
    Inventors: John Richard Bergan, Christopher S. Johnson, John Robert Bergan, Christine G. Burnham, Sarah M. Callahan
  • Publication number: 20140272563
    Abstract: The disclosed embodiments provide a battery cell. The battery cell includes an anode containing an anode current collector and an anode active material disposed over the anode current collector. The battery cell also includes a cathode containing a cathode current collector and a cathode active material disposed over the cathode current collector. The cathode active material has a composition represented by xLi2MO3.(1-x)LiCoyM?(1-y)O2.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: Apple Inc.
    Inventors: Hongli Dai, Christopher S. Johnson, Huiming Wu
  • Patent number: 8835041
    Abstract: The present invention provides an electrode material suitable for use as a cathode in a sodium electrochemical cell or battery, the electrode comprising a layered material of formula NacLidNieMnfMzOb, wherein M comprises one or more metal cation, 0.24?c/b?0.5, 0<d/b?0.23, 0?e/b?0.45, 0?f/b?0.45, 0?z/b?0.45, the combined average oxidation state of the metal components (i.e., NacLidNieMnfMz) is in the range of about 3.9 to 5.2, and b is equal to (c+d+Ve+Xf+Yz)/2, wherein V is the average oxidation state of the Ni, X is the average oxidation state of the Mn, and Y is the average oxidation state of the M in the material. The combined positive charge of the metallic elements is balanced by the combined negative charge of the oxygen anions, the Na is predominately present in a sodium layer, and the Mn, Ni, and M are predominately present in a transition metal layer.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: September 16, 2014
    Assignee: Uchicago Argonne, LLC
    Inventors: Christopher S. Johnson, Sun-Ho Kang, Donghan Kim, Mahalingam Balasubramanian
  • Patent number: 8835027
    Abstract: This invention provides lithium-rich compounds as precursors for positive electrodes for lithium cells and batteries. The precursors comprise a Li2O-containing compound as one component, and a second charged or partially-charged component, selected preferably from a metal oxide, a lithium-metal-oxide, a metal phosphate or metal sulfate compound. Li2O is extracted from the above-mentioned electrode precursors to activate the electrode either by electrochemical methods or by chemical methods. The invention also extends to methods for synthesizing and activating the precursor electrodes and to cells and batteries containing such electrodes.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: September 16, 2014
    Assignee: UChicago Argonne, LLC
    Inventors: Michael M. Thackeray, Sun-Ho Kang, Christopher S. Johnson
  • Publication number: 20140212733
    Abstract: The present invention provides a nanostructured metal oxide material for use as a component of an electrode in a lithium-ion or sodium-ion battery. The material comprises a nanostructured titanium oxide or vanadium oxide film on a metal foil substrate, produced by depositing or forming a nanostructured titanium dioxide or vanadium oxide material on the substrate, and then charging and discharging the material in an electrochemical cell from a high voltage in the range of about 2.8 to 3.8 V, to a low voltage in the range of about 0.8 to 1.4 V over a period of about 1/30 of an hour or less. Lithium-ion and sodium-ion electrochemical cells comprising electrodes formed from the nanostructured metal oxide materials, as well as batteries formed from the cells, also are provided.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 31, 2014
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Christopher S. JOHNSON, Hui XIONG, Tijana RAJH, Elena SHEVCHENKO, Sanja TEPAVCEVIC
  • Patent number: 8755990
    Abstract: Traffic management reports are created from data provided by vehicle sensor devices placed at different fixed locations in a region. Data of vehicles that pass each of the vehicle sensor devices are captured and communicated to a central computer database. At the central computer database, traffic management reports are periodically created from the vehicle data. Each traffic management report incorporates vehicle data from a plurality of vehicles. The vehicle data is for a plurality of previous, non-current times so as to allow for analysis of past vehicle data.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: June 17, 2014
    Assignee: Intuitive Control Systems, LLC
    Inventors: Christopher S. Johnson, Jason S. Geiger, John T. Graef
  • Patent number: 8739011
    Abstract: A semiconductor memory includes multi-mode reporting signals, a state register, and parity detectors. The parity detector determines whether signals received on a communication bus contain a desired parity. The multi-mode reporting signals enable reporting of communication faults without adding additional signals to the semiconductor memory by being configured in a normal operating mode or a parity fault mode for reporting communication faults to an external memory controller. The state register enables storing of received values from the communication bus. With the state register, a memory controller may determine correctly received signal patterns and failing signal patterns. Parity may be defined as even or odd and may be generated based on various signal configurations. The embodiments may be configured as a computing system comprising a processor, an input device, an output device, the memory controller, and at least one semiconductor memory.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: May 27, 2014
    Assignee: Micron Technology, Inc.
    Inventor: Christopher S. Johnson
  • Publication number: 20140129869
    Abstract: Disclosed herein are solutions for addressing the problem of skew of data within a byte lane by factors caused external to the integrated circuit or module providing the data. To compensate for such skew, an on-chip delay is added to the data out paths of those bits in the byte lane with otherwise would arrive early to their destinations. Such on-chip delay is provided delay circuits preferably positioned directly before the output buffers/bond pads of the integrated circuit or module. By intentionally delaying some of the outputs from the integrated circuit or module, external skew is compensated for so that all data in the byte lane arrives at the destination at substantially the same time. In a preferred embodiment, the delay circuits are programmable to allow the integrated circuit or module to be freely tailored to environments having different skew considerations, such as different styles of connectors.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 8, 2014
    Applicant: Micron Technology, Inc.
    Inventor: Christopher S. Johnson
  • Patent number: 8631267
    Abstract: Disclosed herein are solutions for addressing the problem of skew of data within a byte lane by factors caused external to the integrated circuit or module providing the data. To compensate for such skew, an on-chip delay is added to the data out paths of those bits in the byte lane with otherwise would arrive early to their destinations. Such on-chip delay is provided delay circuits preferably positioned directly before the output buffers/bond pads of the integrated circuit or module. By intentionally delaying some of the outputs from the integrated circuit or module, external skew is compensated for so that all data in the byte lane arrives at the destination at substantially the same time. In a preferred embodiment, the delay circuits are programmable to allow the integrated circuit or module to be freely tailored to environments having different skew considerations, such as different styles of connectors.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: January 14, 2014
    Assignee: Mircon Technology, Inc.
    Inventor: Christopher S. Johnson
  • Publication number: 20130305128
    Abstract: A semiconductor memory includes multi-mode reporting signals, a state register, and parity detectors. The parity detector determines whether signals received on a communication bus contain a desired parity. The multi-mode reporting signals enable reporting of communication faults without adding additional signals to the semiconductor memory by being configured in a normal operating mode or a parity fault mode for reporting communication faults to an external memory controller. The state register enables storing of received values from the communication bus. With the state register, a memory controller may determine correctly received signal patterns and failing signal patterns. Parity may be defined as even or odd and may be generated based on various signal configurations. The embodiments may be configured as a computing system comprising a processor, an input device, an output device, the memory controller, and at least one semiconductor memory.
    Type: Application
    Filed: July 16, 2013
    Publication date: November 14, 2013
    Inventor: Christopher S. Johnson
  • Patent number: 8489975
    Abstract: A semiconductor memory includes multi-mode reporting signals, a state register, and parity detectors. The parity detector determines whether signals received on a communication bus contain a desired parity. The multi-mode reporting signals enable reporting of communication faults without adding additional signals to the semiconductor memory by being configured in a normal operating mode or a parity fault mode for reporting communication faults to an external memory controller. The state register enables storing of received values from the communication bus. With the state register, a memory controller may determine correctly received signal patterns and failing signal patterns. Parity may be defined as even or odd and may be generated based on various signal configurations. The embodiments may be configured as a computing system comprising a processor, an input device, an output device, the memory controller, and at least one semiconductor memory.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 16, 2013
    Assignee: Micron Technology, Inc.
    Inventor: Christopher S. Johnson
  • Patent number: 8417442
    Abstract: Traffic management reports are created by providing vehicle sensor devices at different location in a region. Each device captures data of vehicles that pass the device. The vehicle data is communicated to a central computer database. At the central computer database, a user interface selects one or more criteria from a plurality of criteria for filtering the vehicle data. Traffic management reports are then automatically created from the filtered vehicle data using the selected criteria.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: April 9, 2013
    Assignee: Intuitive Control Systems, LLC
    Inventors: Christopher S. Johnson, Jason S. Geiger, John T. Graef
  • Patent number: 8383077
    Abstract: A method of stabilizing a metal oxide or lithium-metal-oxide electrode comprises contacting a surface of the electrode, prior to cell assembly, with an aqueous or a non-aqueous acid solution having a pH greater than 4 but less than 7 and containing a stabilizing salt, for a time and at a temperature sufficient to etch the surface of the electrode and introduce stabilizing anions and cations from the salt into said surface. The structure of the bulk of the electrode remains unchanged during the acid treatment. The stabilizing salt comprises fluoride and at least one cationic material selected from the group consisting of ammonium, phosphorus, titanium, silicon, zirconium, aluminum, and boron.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: February 26, 2013
    Assignee: UChicago Argonne, LLC
    Inventors: Michael M. Thackeray, Sun-Ho Kang, Christopher S. Johnson
  • Publication number: 20130013985
    Abstract: A semiconductor memory includes multi-mode reporting signals, a state register, and parity detectors. The parity detector determines whether signals received on a communication bus contain a desired parity. The multi-mode reporting signals enable reporting of communication faults without adding additional signals to the semiconductor memory by being configured in a normal operating mode or a parity fault mode for reporting communication faults to an external memory controller. The state register enables storing of received values from the communication bus. With the state register, a memory controller may determine correctly received signal patterns and failing signal patterns. Parity may be defined as even or odd and may be generated based on various signal configurations. The embodiments may be configured as a computing system comprising a processor, an input device, an output device, the memory controller, and at least one semiconductor memory.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicant: MICRON TECHNOLOGY, INC.
    Inventor: Christopher S. Johnson
  • Patent number: 8313721
    Abstract: This invention provides a lithium-oxygen or lithium-air electrochemical cell comprising a negative electrode, an electrolyte, and a porous activated positive electrode comprising lithium-rich electrocatalytic materials suitable for use in lithium-oxygen (air) cells and batteries. The activated positive electrode is produced by activating a precursor electrode formed from a material comprising one or more metal oxide compounds of general formula xLi2O.yMOz, in which 0<x?4, 0<y?1, and 0<z?3, in which M is typically, but not exclusively, a transition metal, excluding Li2MnO3 as a sole metal oxide compound in the precursor electrode. Li2O is extracted from the above-mentioned precursors to activate the electrode either by electrochemical methods or by chemical methods. The invention extends to batteries containing such electrochemical cells.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: November 20, 2012
    Assignee: UChicago Argonne, LLC
    Inventors: Michael M. Thackeray, Christopher S. Johnson, Sun-Ho Kang, Lynn Trahey, John T. Vaughey
  • Patent number: 8296639
    Abstract: A semiconductor memory includes multi-mode reporting signals, a state register, and parity detectors. The parity detector determines whether signals received on a communication bus contain a desired parity. The multi-mode reporting signals enable reporting of communication faults without adding additional signals to the semiconductor memory by being configured in a normal operating mode or a parity fault mode for reporting communication faults to an external memory controller. The state register enables storing of received values from the communication bus. With the state register, a memory controller may determine correctly received signal patterns and failing signal patterns. Parity may be defined as even or odd and may be generated based on various signal configurations. The invention may be configured as a computing system comprising a processor, an input device, an output device, the memory controller, and at least one semiconductor memory.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: October 23, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Christopher S. Johnson
  • Patent number: 8281052
    Abstract: A microprocessor system having a microprocessor and a double data rate memory device having separate groups of external pins adapted to receive addressing, data, and control information and a memory controller adapted to set a burst type of the double data rate memory to interleaved or sequential by sending a signal through one of the external pins of the double data rate memory device, such that when a read command is sent by the controller, depending on the burst type set, the double data rate memory device returns interleaved or sequentially output data to the memory controller.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: October 2, 2012
    Assignee: Round Rock Research, LLC
    Inventor: Christopher S. Johnson
  • Publication number: 20120198144
    Abstract: A microprocessor system having a microprocessor and a double data rate memory device having separate groups of external pins adapted to receive addressing, data, and control information and a memory controller adapted to set a burst type of the double data rate memory to interleaved or sequential by sending a signal through one of the external pins of the double data rate memory device, such that when a read command is sent by the controller, depending on the burst type set, the double data rate memory device returns interleaved or sequentially output data to the memory controller.
    Type: Application
    Filed: April 9, 2012
    Publication date: August 2, 2012
    Applicant: ROUND ROCK RESEARCH, LLC
    Inventor: Christopher S. Johnson
  • Publication number: 20120183837
    Abstract: The present invention provides an electrode material suitable for use as a cathode in a sodium electrochemical cell or battery, the electrode comprising a layered material of formula NacLidNieMnfMzOb, wherein M comprises one or more metal cation, 0.24?c/b?0.5, 0<d/b?0.23, 0?e/b?0.45, 0?f/b?0.45, 0?z/b?0.45, the combined average oxidation state of the metal components (i.e., NacLidNieMnfMz) is in the range of about 3.9 to 5.2, and b is equal to (c+d+Ve+Xf+Yz)/2, wherein V is the average oxidation state of the Ni, X is the average oxidation state of the Mn, and Y is the average oxidation state of the M in the material. The combined positive charge of the metallic elements is balanced by the combined negative charge of the oxygen anions, the Na is predominately present in a sodium layer, and the Mn, Ni, and M are predominately present in a transition metal layer.
    Type: Application
    Filed: January 14, 2011
    Publication date: July 19, 2012
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Christopher S. JOHNSON, Sun-Ho KANG, Donghan KIM, Mahalingam BALASUBRAMANIAN