Patents Represented by Attorney, Agent or Law Firm John F. Schipper
  • Patent number: 7784531
    Abstract: A method for providing for thermal conduction using an array of carbon nanotubes (CNTs). An array of vertically oriented CNTs is grown on a substrate having high thermal conductivity, and interstitial regions between adjacent CNTs in the array are partly or wholly filled with a filler material having a high thermal conductivity so that at least one end of each CNT is exposed. The exposed end of each CNT is pressed against a surface of an object from which heat is to be removed. The CNT-filler composite adjacent to the substrate provides improved mechanical strength to anchor CNTs in place and also serves as a heat spreader to improve diffusion of heat flux from the smaller volume (CNTs) to a larger heat sink.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: August 31, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Jun Li, Meyya Meyyappan, Carlos Dangelo
  • Patent number: 7783130
    Abstract: The present invention relates to devices and methods for the measurement and/or for the specification of the perceptual intensity of a visual image, or the perceptual distance between a pair of images. Grayscale test and reference images are processed to produce test and reference luminance images. A luminance filter function is convolved with the reference luminance image to produce a local mean luminance reference image. Test and reference contrast images are produced from the local mean luminance reference image and the test and reference luminance images respectively, followed by application of a contrast sensitivity filter. The resulting images are combined according to mathematical prescriptions to produce a Just Noticeable Difference, JND value, indicative of a Spatial Standard Observer, SSO. Some embodiments include masking functions, window functions, special treatment for images lying on or near borders and pre-processing of test images.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: August 24, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Andrew B. Watson
  • Patent number: 7767270
    Abstract: Method and system for functionalizing a collection of carbon nanotubes (CNTs). A selected precursor gas (e.g., H2 or NH3 or NF3 or F2 or CF4 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. The predominant species that are deposited on the CNT array vary with the distance d measured along a path from the precursor gas to the CNT array; two or three different predominant species can be deposited on a CNT array for distances d=d1 and d=d2>d1 and d=d3>d2.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: August 3, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Bishun N. Khare, Meyya Meyyappan
  • Patent number: 7767305
    Abstract: Tantalum-based ceramics are suitable for use in thermal protection systems. These composite structures have high efficiency surfaces (low catalytic efficiency and high emittance), thereby reducing heat flux to a spacecraft during planetary re-entry. These ceramics contain tantalum disilicide, molybdenum disilicide and borosilicate glass. The components are milled, along with a processing aid, then applied to a surface of a porous substrate, such as a fibrous silica or carbon substrate. Following application, the coating is then sintered on the substrate. The composite structure is substantially impervious to hot gas penetration and capable of surviving high heat fluxes at temperatures approaching 3000° F. and above.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: August 3, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventors: David A. Stewart, Daniel B. Leiser, Robert R. DiFiore, Victor W. Katvala
  • Patent number: 7718223
    Abstract: A method for controlling density or tower height of carbon nanotube (CNT) arrays grown in spaced apart first and second regions on a substrate. CNTs having a first density range (or first tower height range) are grown in the first region using a first source temperature range for growth. Subsequently or simultaneously, CNTs having a second density range (or second tower height range), having an average density (or average tower height) in the second region different from the average density (or average tower height) for the first region, are grown in the second region, using supplemental localized heating for the second region. Applications for thermal dissipation and/or dissipation of electrical charge or voltage in an electronic device are discussed.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: May 18, 2010
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventors: Lance D. Delzeit, John F. Schipper
  • Patent number: 7704547
    Abstract: Method and system for combined coarse scale control and fine scale control of growth density of a carbon nanotube (“CNT”) array on a substrate, using a selected electrical field adjacent to a substrate surface for coarse scale density control (by one or more orders of magnitude) and a selected CNT growth temperature range for fine scale density control (by multiplicative factors of less than an order of magnitude) of CNT growth density. Two spaced apart regions on a substrate may have different CNT growth densities and/or may use different feed gases for CNT growth.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: April 27, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventors: Lance D. Delzeit, John F. Schipper
  • Patent number: 7702427
    Abstract: Method and system for evaluating and implementing air traffic management tools and approaches for managing and avoiding an air traffic incident before the incident occurs. The invention provides flight plan routing and direct routing or wind optimal routing, using great circle navigation and spherical Earth geometry. The invention provides for aircraft dynamics effects, such as wind effects at each altitude, altitude changes, airspeed changes and aircraft turns to provide predictions of aircraft trajectory (and, optionally, aircraft fuel use). A second system provides several aviation applications using the first system. These applications include conflict detection and resolution, miles-in trail or minutes-in-trail aircraft separation, flight arrival management, flight re-routing, weather prediction and analysis and interpolation of weather variables based upon sparse measurements.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: April 20, 2010
    Assignee: The United States of America as represented by the National Aeronautics and Space Administration (NASA)
    Inventors: Banavar Sridhar, Kapil S. Sheth, Gano Broto Chatterji, Karl D. Bilimoria, Shon Grabbe, John F. Schipper
  • Patent number: 7698274
    Abstract: Method and system for providing selective access to different portions of a database by different subgroups of database users. Where N users are involved, up to 2N?1 distinguishable access subgroups in a group space can be formed, where no two access subgroups have the same members. Two or more members of a given access subgroup can edit, substantially simultaneously, a document accessible to each member.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: April 13, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventors: David A. Maluf, Yuri O. Gawdiak
  • Patent number: 7672969
    Abstract: A computer-based system for configuring and displaying information on changes in, and present status of, a collection of events associated with a project. Classes of icons for decision events, configurations and feedback mechanisms, and time lines (sequential and/or simultaneous) for related events are displayed. Metadata for each icon in each class is displayed by choosing and activating the corresponding icon. Access control (viewing, reading, writing, editing, deleting, etc.) is optionally imposed for metadata and other displayed information.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: March 2, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventors: Yuri O. Gawdiak, Mohana M. Gurram, David A. Maluf, Luis A. Mederos
  • Patent number: 7662459
    Abstract: A thermal protection system for atmospheric entry of a vehicle, the system including a honeycomb structure with selected cross sectional shapes that receives and holds thermally cured thermal protection (TP) blocks that have corresponding cross sectional shapes. Material composition for TP blocks in different locations can be varied to account for different atmospheric heating characteristics at the different locations. TP block side walls may be attached to all, or to less than all, the corresponding honeycomb structure side walls.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: February 16, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventor: Peter T. Zell
  • Patent number: 7655497
    Abstract: A method for growth of an alloy for use in a nanostructure, to provide a resulting nanostructure compound including at least one of GexTey, InxSby, InxSey, SbxTey, GaxSby, GexSby,Tez, InxSbyTez, GaxSeyTez, SnxSbyTez, InxSbyGez, GewSnxSbyTez, GewSbxSeyTez, and TewGexSbySz, where w, x, y and z are numbers consistent with oxidization states (2, 3, 4, 5, 6) of the corresponding elements. The melt temperatures for some of the resulting compounds are in a range 330-420° C., or even lower with some compounds.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: February 2, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Bin Yu, Xuhui Sun, Meyya Meyyappan
  • Patent number: 7655145
    Abstract: Method and system for processing of a liquid (“contaminant liquid”) containing water and containing urine and/or other contaminants in a two step process. Urine, or a contaminated liquid similar to and/or containing urine and thus having a relatively high salt and urea content is passed through an activated carbon filter to provide a resulting liquid, to remove most of the organic molecules. The resulting liquid is passed through a semipermeable membrane from a membrane first side to a membrane second side, where a fortified drink having a lower water concentration (higher osmotic potential) than the resulting liquid is positioned. Osmotic pressure differential causes the water, but not most of the remaining inorganic (salts) contaminant(s) to pass through the membrane to the fortified drink. Optionally, the resulting liquid is allowed to precipitate additional organic molecules before passage through the membrane.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: February 2, 2010
    Assignee: United States Government as represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventors: Sherwin J. Gormly, Michael T. Flynn
  • Patent number: 7650232
    Abstract: Method and system for analyzing and processing information on one or more aircraft flight paths, using a four-dimensional coordinate system including three Cartesian or equivalent coordinates (x, y, z) and a fourth coordinate ? that corresponds to a distance estimated along a reference flight path to a nearest reference path location corresponding to a present location of the aircraft. Use of the coordinate ?, rather than elapsed time t, avoids coupling of along-track error into aircraft altitude and reduces effects of errors on an aircraft landing site. Along-track, cross-track and/or altitude errors are estimated and compared with a permitted error bounding space surrounding the reference flight path.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: January 19, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventor: Russell A. Paielli
  • Patent number: 7635420
    Abstract: A method for concentrating or partly separating particles of a selected species from a liquid or fluid containing these particles and flowing in a channel, and for determining if the selected species particle is present in the liquid or fluid. A time varying electrical field E, having a root-mean-square intensity E2rms with a non-zero gradient in a direction transverse to the liquid or fluid flow direction, is produced by a nanostructure electrode array, with a very high magnitude gradient near exposed electrode tips. A dielectrophoresis force causes the selected particles to accumulate near the electrode tips, if the medium and selected particles have substantially different dielectric constants. An insulating material surrounds most of each of the nanostructure electrodes, and a region of the insulating material surface is functionalized to promote attachment of the selected species particles to the surface.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: December 22, 2009
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Jun Li, Alan M. Cassell, Prabhu U. Arumugam
  • Patent number: 7616982
    Abstract: A mobile pill transmitter system that moves through or adjacent to one or more organs in an animal's body and that provides signals from which the pill's present location and/or present angular orientation can be determined. The system also provides signals from which the present roll angle of the pill, about a selected axis, can be determined. When the location coordinates and the roll angle of the pill are within selected ranges, an aperture on the pill container releases a selected chemical into or onto the body. Optionally, the pill as it moves also provides a sequence of visually perceptible images; the times for image formation may correspond to times at which the pill transmitter system location or image satisfies one or at least four different criteria.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: November 10, 2009
    Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: John F. Schipper
  • Patent number: 7596416
    Abstract: A system for managing a project that includes multiple tasks and a plurality of workers. Input information includes characterizations based upon a human model, a team model and a product model. Periodic reports, such as a monthly report, a task plan report, a budget report and a risk management report, are generated and made available for display or further analysis. An extensible database allows searching for information based upon context and upon content.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: September 29, 2009
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: David A. Maluf, Yuri O. Gawdiak, David G. Bell, Mohana M. Gurram
  • Patent number: 7590606
    Abstract: A system that allows a team of geographically dispersed users to collaboratively analyze a mishap event. The system includes a reconfigurable ontology, including instances that are related to and characterize the mishap, a semantic network that receives, indexes and stores, for retrieval, viewing and editing, the instances and links between the instances, a network browser interface for retrieving and viewing screens that present the instances and links to other instances and that allow editing thereof, and a rule-based inference engine, including a collection of rules associated with establishment of links between the instances. A possible conclusion arising from analysis of the mishap event may be characterized as one or more of: not a credible conclusion; an unlikely conclusion; a credible conclusion; conclusion needs analysis; conclusion needs supporting data; conclusion proposed to be closed; and an un-reviewed conclusion.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: September 15, 2009
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)
    Inventors: Richard M. Keller, Tina L. Panontin, Robert E. Carvalho, Ian Sturken, James F. Williams, Shawn R. Wolfe, Yuri O. Gawdiak
  • Patent number: 7574338
    Abstract: Modeling and simulation of free and forced structural vibrations is essential to an overall structural health monitoring capability. In the various embodiments, a first principles finite-difference approach is adopted in modeling a structural subsystem such as a mechanical gear by solving elastodynamic equations in generalized curvilinear coordinates. Such a capability to generate a dynamic structural response is widely applicable in a variety of structural health monitoring systems. This capability (1) will lead to an understanding of the dynamic behavior of a structural system and hence its improved design, (2) will generate a sufficiently large space of normal and damage solutions that can be used by machine learning algorithms to detect anomalous system behavior and achieve a system design optimization and (3) will lead to an optimal sensor placement strategy, based on the identification of local stress maxima all over the domain.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: August 11, 2009
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Upender K. Kaul
  • Patent number: 7574357
    Abstract: Method and system for generating electromyographic or sub-audible signals (“SAWPs”) and for transmitting and recognizing the SAWPs that represent the original words and/or phrases. The SAWPs may be generated in an environment that interferes excessively with normal speech or that requires stealth communications, and may be transmitted using encoded, enciphered or otherwise transformed signals that are less subject to signal distortion or degradation in the ambient environment.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: August 11, 2009
    Assignee: The United States of America as represented by the Admimnistrator of the National Aeronautics and Space Administration (NASA)
    Inventors: C. Charles Jorgensen, Bradley J. Betts
  • Patent number: 7561946
    Abstract: Method and system for monitoring and analyzing, in real time, variation with time of an aircraft flight parameter. A time-dependent recovery band, defined by first and second recovery band boundaries that are spaced apart at at least one time point, is constructed for a selected flight parameter and for a selected time recovery time interval length ?t(FP;rec). A flight parameter, having a value FP(t=tp) at a time t=tp, is likely to be able to recover to a reference flight parameter value FP(t?;ref), lying in a band of reference flight parameter values FP(t?;ref;CB), within a time interval given by tp?t??tp?t(FP;rec), if (or only if) the flight parameter value lies between the first and second recovery band boundary traces.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: July 14, 2009
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: John F. Schipper