Patents Assigned to NASA
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Patent number: 7286573Abstract: A method for converting a Type 2 quantum well semiconductor material to a Type 1 material. A second layer of undoped material is placed between first and third layers of selectively doped material, which are separated from the second layer by undoped layers having small widths. Doping profiles are chosen so that a first electrical potential increment across a first layer-second layer interface is equal to a first selected value and/or a second electrical potential increment across a second layer-third layer interface is equal to a second selected value. The semiconductor structure thus produced is useful as a laser material and as an incident light detector material in various wavelength regions, such as a mid-infrared region.Type: GrantFiled: August 12, 2004Date of Patent: October 23, 2007Assignee: United States of America as Represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventor: Cun-Zheng Ning
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Patent number: 7276266Abstract: Method and system for functionalizing a collection of carbon nanotubes (CNTs). A selected precursor gas (e.g., H2 or F2 or CnHm) is irradiated to provide a cold plasma of selected target particles, such as atomic H or F, in a first chamber. The target particles are directed toward an array of CNTs located in a second chamber while suppressing transport of ultraviolet radiation to the second chamber. A CNT array is functionalized with the target particles, at or below room temperature, to a point of saturation, in an exposure time interval no longer than about 30 sec.Type: GrantFiled: December 13, 2002Date of Patent: October 2, 2007Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventors: Bishun N. Khare, Meyya Meyyappan
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Publication number: 20070222559Abstract: A system and related methods are provided that notify affected persons of an alert message in a timely manner. In one embodiment, an authorized individual may first create an alert that is received by a central server. Next, the system may perform authentication to verify that the person creating the alert message has the authority to do so. If authorization is successful, the alert message may be stored in a database. The system may match the details of the alert message to user subscriptions. After determining who should be notified of the alert message, the system may determine the best way to notify the affected people. The notification mediums may be determined based on user information as well as the details of the alert message. The affected people may be notified via a secure transmission.Type: ApplicationFiled: November 17, 2006Publication date: September 27, 2007Applicant: NASA HeadquartersInventors: Stephanie Nickens, Walter Moleski, Corinne Irwin, Julia Loftis, Melissa Pell, Vince Pell
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Patent number: 7261783Abstract: A nickel-base superalloy article for use in turbines has increased creep resistance and lower density. The superalloy article includes, as measured in % by weight, 6.0-12.0% Mo, 5.5-6.5% Al, 3.0-7.0% Ta, 0-15% Co, 2.0-6.0% Cr, 1.0-4.0% Re, 0-1.5% W, 0-1.5% Ru, 0-2.0%-Ti, 0-3.0% Nb, 0-0.2% Hf, 0-0.02% Y, 0.001-0.005% B, 0.01-0.04% C, and a remainder including nickel plus impurities.Type: GrantFiled: September 22, 2004Date of Patent: August 28, 2007Assignee: The United States of America as Represented by the Administrator of NASAInventors: Rebecca A. MacKay, Timothy P. Gabb, James L Smialek, Michael V. Nathal
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Patent number: 7259692Abstract: A system and method for hybrid power management. The system includes photovoltaic cells, ultracapacitors, and pulse generators. In one embodiment, the hybrid power management system is used to provide power for a highway safety flasher.Type: GrantFiled: September 1, 2004Date of Patent: August 21, 2007Assignee: The United States of America as represented by the Administrator of NASAInventor: Dennis J. Eichenberg
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Patent number: 7250723Abstract: A device and method for generating cathode luminescence is provided. The device and method generate broad spectrum electromagnetic radiation in the visible. A layer of particles, such as quartz or alumina powder, is exposed to electrons in a plasma discharge. Surface excitation of these particles or the generations/excitation of F-center sites give rise to luminescence.Type: GrantFiled: December 21, 2004Date of Patent: July 31, 2007Assignee: The United States of America as represented by the Administrator of NASAInventor: John E. Foster
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Publication number: 20070164164Abstract: This invention is a method and supporting apparatus for autonomously capturing, servicing and de-orbiting a free-flying spacecraft, such as a satellite, using robotics. The capture of the spacecraft includes the steps of optically seeking and ranging the satellite using LIDAR, and matching tumble rates, rendezvousing and berthing with the satellite. Servicing of the spacecraft may be done using supervised autonomy, which is allowing a robot to execute a sequence of instructions without intervention from a remote human-occupied location. These instructions may be packaged at the remote station in a script and uplinked to the robot for execution upon remote command giving authority to proceed. Alternately, the instructions may be generated by Artificial Intelligence (AI) logic onboard the robot. In either case, the remote operator maintains the ability to abort an instruction or script at any time as well as the ability to intervene using manual override to teleoperate the robot.Type: ApplicationFiled: February 2, 2007Publication date: July 19, 2007Applicant: NASA HeadquartersInventors: Frank Cepollina, Richard Burns, Jill Holz, James Corbo, Nicholas Jedhrich
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Publication number: 20070162410Abstract: Systems, methods and apparatus are provided through which in some embodiments, automata learning algorithms and techniques are implemented to generate a more complete set of scenarios for requirements based programming. More specifically, a CSP-based, syntax-oriented model construction, which requires the support of a theorem prover, is complemented by model extrapolation, via automata learning. This may support the systematic completion of the requirements, the nature of the requirement being partial, which provides focus on the most prominent scenarios. This may generalize requirement skeletons by extrapolation and may indicate by way of automatically generated traces where the requirement specification is too loose and additional information is required.Type: ApplicationFiled: September 28, 2006Publication date: July 12, 2007Applicant: NASA HQ's.Inventors: Michael G. HINCHEY, Tiziana MARGARIA, James L. RASH, Christopher A. ROUFF, Bernard STEFFEN
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Patent number: 7231329Abstract: Method and system for generating an elliptic grid in generalized coordinates in two or three dimensions, where one or more decay parameters near a boundary segment of a grid are determined as part of the grid solution, rather than being prescribed initially by a user. The decay parameters may vary with one or more generalized coordinates and determine the rate(s) at which separation distances between adjacent grid lines change as one moves toward or away from a grid boundary segment.Type: GrantFiled: November 7, 2003Date of Patent: June 12, 2007Assignee: United States of America as Represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventor: Upender K. Kaul
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Patent number: 7217650Abstract: A method for fabricating an electrical interconnect between two or more electrical components. A conductive layer is provided on a substarte and a thin, patterned catalyst array is deposited on an exposed surface of the conductive layer. A gas or vapor of a metallic precursor of a metal nanowire (MeNW) is provided around the catalyst array, and MeNWs grow between the conductive layer and the catalyst array. The catalyst array and a portion of each of the MeNWs are removed to provide exposed ends of the MeNWs.Type: GrantFiled: March 24, 2004Date of Patent: May 15, 2007Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventors: Hou Tee Ng, Jun Li, Meyya Meyyappan
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Patent number: 7212135Abstract: Method and system for monitoring and comparing, in real time, performance of an aircraft during an approach to touchdown along a conventional approach path and along a contemplated modified approach path to touchdown. In a first procedure, a flight parameter value at a selected location is compared and displayed, for the planned path and for the modified path. In a second procedure, flight parameter values FP(tn) at a sequence {tn}n of measurement times is compared and displayed, for the planned path and for a contemplated or presently-executed modified path. If the flight parameter for the planned path and for the modified path differ too much from each other, the pilot in command has an option of terminating the approach along the modified path.Type: GrantFiled: February 22, 2005Date of Patent: May 1, 2007Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventors: Robert E. Lynch, Thomas R. Chidester, Robert E. Lawrence
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Patent number: 7206674Abstract: Method and system for displaying information on one or more aircraft flights, where at least one flight is determined to have at least one atypical flight phase according to specified criteria. A flight parameter trace for an atypical phase is displayed and compared graphically with a group of traces, for the corresponding flight phase and corresponding flight parameter, for flights that do not manifest atypicality in that phase.Type: GrantFiled: August 13, 2004Date of Patent: April 17, 2007Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventors: Irving C. Statler, Thomas A. Ferryman, Brett G. Amidan, Paul D. Whitney, Amanda M. White, Alan R. Willse, Scott K. Cooley, Joseph Griffith Jay, Robert E. Lawrence, Chris J. Mosbrucker, Loren J. Rosenthal, Robert E. Lynch, Thomas R. Chidester, Gary L. Prothero, Adi Andrei, Timothy P. Romanowski, Daniel E. Robin, Jason W. Prothero
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Publication number: 20070073631Abstract: Systems, methods and apparatus are provided through which in some embodiments an autonomic unit is quiesced. In at least one embodiment of the invention, a method for managing an autonomic system based on functioning state and operating status of the system includes processing received signals from the system to obtain an analysis of the condition of the system, generating one or more stay-awake signals based on the functioning status and the operating state of the system, transmitting the stay-awake signal, transmitting self health/urgency data, and transmitting environment health/urgency data. A quiesce component of an autonomic unit can render the autonomic unit inactive for a specific amount of time or until a challenging situation has passed.Type: ApplicationFiled: September 21, 2006Publication date: March 29, 2007Applicant: NASA HQ's.Inventors: Michael HINCHEY, Roy STERRITT
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Publication number: 20070074180Abstract: Systems, methods and apparatus are provided through which, in some embodiments, a script is derived from scenarios, the script is analyzed, and flaws in the script are corrected. The systems, methods and apparatus may include inferring an equivalent formal model from procedures described in natural language (such as English), as scenarios, use cases, or a representation in one of a plethora of graphical notations Such a model can be analyzed for contradictions, conflicts, use of resources before the resources are available, competition for resources, and so forth. From such a formal model, code can be automatically generated in a variety of notations. This may include high level programming languages, machine languages, and scripting languages. The approach improves the resulting code, which may be provably equivalent to the procedures described at the outset.Type: ApplicationFiled: August 1, 2006Publication date: March 29, 2007Applicant: NASA HQ'SInventors: Michael Hinchey, James Rash, Christopher Rouff, Denis Gracanin
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Publication number: 20070069195Abstract: A silicon germanium (SiGe) semiconductive alloy is grown on a substrate of single crystalline Al2O3. A {111} crystal plane of a cubic diamond structure SiGe is grown on the substrate's {0001} C-plane such that a <110> orientation of the cubic diamond structure SiGe is aligned with a <1,0,?1,0> orientation of the {0001} C-plane. A lattice match between the substrate and the SiGe is achieved by using a SiGe composition that is 0.7223 atomic percent silicon and 0.2777 atomic percent germanium.Type: ApplicationFiled: September 27, 2005Publication date: March 29, 2007Applicant: United States of America as represented by the Administrator of the NASAInventors: Yeonjoon Park, Sang Choi, Glen King
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Publication number: 20060256975Abstract: A method and system for mapping acoustic sources determined from a phased microphone array. A plurality of microphones are arranged in an optimized grid pattern including a plurality of grid locations thereof. A linear configuration of N equations and N unknowns can be formed by accounting for a reciprocal influence of one or more beamforming characteristics thereof at varying grid locations among the plurality of grid locations. A full-rank equation derived from the linear configuration of N equations and N unknowns can then be iteratively determined. A full-rank can be attained by the solution requirement of the positivity constraint equivalent to the physical assumption of statically independent noise sources at each N location.Type: ApplicationFiled: May 10, 2005Publication date: November 16, 2006Applicant: United States of America as represented by the Administrator of the NASAInventors: Thomas Brooks, William Humphreys
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Patent number: 7075457Abstract: Method and system for analyzing, separately or in combination, kinetic energy and potential energy and/or their time derivatives, measured or estimated or computed, for an aircraft in approach phase or in takeoff phase, to determine if the aircraft is or will be put in an anomalous configuration in order to join a stable approach path or takeoff path. A reference value of kinetic energy and/or potential energy (or time derivatives thereof) is provided, and a comparison index for the estimated energy and reference energy is computed and compared with a normal range of index values for a corresponding aircraft maneuver. If the computed energy index lies outside the normal index range, this phase of the aircraft is identified as anomalous, non-normal or potentially unstable.Type: GrantFiled: September 22, 2004Date of Patent: July 11, 2006Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventors: Thomas R. Chidester, Robert E. Lynch, Robert E. Lawrence, Brett G. Amidan, Thomas A. Ferryman, Douglas A. Drew, Robert J. Ainsworth, Gary L. Prothero, Timothy P. Romanowski, Laurent Bloch, William L. Craine, Vincent J. Zaccardi
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Patent number: 7070923Abstract: System and method for enclosing cells and/or tissue, for purposes of growth, cell differentiation, suppression of cell differentiation, biological processing and/or transplantation of cells and tissues (biological inserts), and for secretion, sensing and monitoring of selected chemical substancesand activation of gene expression of biological inserts implanted into a human body. Selected cells and/or tissue are enveloped in a “cage” that is primarily carbon nanotube Bucky paper, with a selected thickness and porosity. Optionally, selected functional groups, proteins and/or peptides are attached to the carbon nanotube cage, or included within the cage, to enhance the growth and/or differentiation of the cells and/or tissue, to select for certain cellular sub-populations, to optimize certain functions of the cells and/or tissue and/or to optimize the passage of chemicals across the cage surface(s).Type: GrantFiled: June 26, 2003Date of Patent: July 4, 2006Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventor: David J. Loftus
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Publication number: 20060134733Abstract: The present invention provides for a method of culturing cells and inducing the expression of at least one gene in the cell culture. The method provides for contacting the cell with a transcription factor decoy oligonucleotide sequence comprising a nucleotide sequence encoding a shear stress response element.Type: ApplicationFiled: September 20, 2004Publication date: June 22, 2006Applicant: NASA, Johnson Space CenterInventors: Thomas Goodwin, Timothy Hammond, James Kaysen
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Patent number: 7042639Abstract: A Microscope Imaging System (CMIS) with intelligent controls is disclosed that provides techniques for scanning, identifying, detecting and tracking microscopic changes in selected characteristics or features of various surfaces including, but not limited to, cells, spheres, and manufactured products subject to difficult-to-see imperfections. The practice of the present invention provides applications that include colloidal hard spheres experiments, biological cell detection for patch clamping, cell movement and tracking, as well as defect identification in products, such as semiconductor devices, where surface damage can be significant, but difficult to detect. The CMIS system is a machine vision system, which combines intelligent image processing with remote control capabilities and provides the ability to auto-focus on a microscope sample, automatically scan an image, and perform machine vision analysis on multiple samples simultaneously.Type: GrantFiled: February 4, 2005Date of Patent: May 9, 2006Assignee: The United States of America as represented by the Administrator of NASAInventor: Mark McDowell