Patents by Inventor Xuan Phan

Xuan Phan 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: 20200395797
    Abstract: In one embodiment, a magnet array and ironless winding for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators forming poles on the reinforcing side of the array, and such that a magnetic moment at the poles is oriented generally perpendicular to the reinforcing side of the array, the winding being adjacent to the array and comprising conductor bundles having a generally rectangular cross-section arranged such that a long side of the generally rectangular cross-section is transverse to a direction of magnetic field lines at the poles.
    Type: Application
    Filed: April 27, 2020
    Publication date: December 17, 2020
    Applicant: AEROVIRONMENT, INC.
    Inventors: Bart Dean HIBBS, Bang Xuan PHAN
  • Patent number: 10666098
    Abstract: In one embodiment, a magnet array and ironless winding for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators forming poles on the reinforcing side of the array, and such that a magnetic moment at the poles is oriented generally perpendicular to the reinforcing side of the array, the winding being adjacent to the array and comprising conductor bundles having a generally rectangular cross-section arranged such that a long side of the generally rectangular cross-section is transverse to a direction of magnetic field lines at the poles.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: May 26, 2020
    Assignee: AeroVironment, Inc.
    Inventors: Bart Dean Hibbs, Bang Xuan Phan
  • Patent number: 10437993
    Abstract: A mechanism called time-deterministic replay (TOR) that can reproduce the execution of a program, including its precise timing. Without TOR, reproducing the timing of an execution is difficult because there are many sources of timing variability. TOR uses a combination of techniques to either mitigate or eliminate most of these sources of variability. Using a prototype implementation of TOR in a Java Virtual Machine, we show it is possible to reproduce the timing to within 1.85% of the original execution. A study of one of the applications of TOR is described: the detection of a covert timing channel. Timing channels can be used to exfiltrate information from a compromised machine by subtly varying timing of the machine's outputs, TOR can detect this variation. Unlike prior solutions, which generally look for a specific type of timing channel, our approach can detect a wide variety of channels with high accuracy.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: October 8, 2019
    Assignees: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, GEORGETOWN UNIVERSITY
    Inventors: Ang Chen, Hanjun Xiao, William Bradley Moore, Andreas Haeberlen, Linh Thi Xuan Phan, Micah Sherr, Wenchao Zhou
  • Patent number: 10324621
    Abstract: Facilitating analysis of user interface gesture patterns is described. In example implementations, a computing device acquires data that describes a user interface gesture pattern, such as finger movements on a touchscreen, in terms of pixels of a visual display. A repetitive arrangement of polygons, such as a grid of rectangles, is logically overlaid on the visual display. The computing device transforms the pixel-based data into polygon-based data that represents the gesture pattern in terms of polygons traversed by the gesture pattern. The computing device also converts the polygon-based data into text-based data such that the gesture pattern is represented by textual characters, such as a text string. The text string can include, for instance, a list of polygons traversed by the gesture pattern. The text-based data is forwarded to a service that can efficiently analyze relationships that may exist among multiple gesture patterns across multiple devices or end users.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: June 18, 2019
    Assignee: Adobe Inc.
    Inventors: Peter Raymond Fransen, Christine Xuan Phan
  • Publication number: 20180331590
    Abstract: In one embodiment, a magnet array and ironless winding for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators forming poles on the reinforcing side of the array, and such that a magnetic moment at the poles is oriented generally perpendicular to the reinforcing side of the array, the winding being adjacent to the array and comprising conductor bundles having a generally rectangular cross-section arranged such that a long side of the generally rectangular cross-section is transverse to a direction of magnetic field lines at the poles.
    Type: Application
    Filed: March 1, 2018
    Publication date: November 15, 2018
    Applicant: AeroVironment, Inc.
    Inventors: Bart Dean HIBBS, Bang Xuan PHAN
  • Publication number: 20180253224
    Abstract: Facilitating analysis of user interface gesture patterns is described. In example implementations, a computing device acquires data that describes a user interface gesture pattern, such as finger movements on a touchscreen, in terms of pixels of a visual display. A repetitive arrangement of polygons, such as a grid of rectangles, is logically overlaid on the visual display. The computing device transforms the pixel-based data into polygon-based data that represents the gesture pattern in terms of polygons traversed by the gesture pattern. The computing device also converts the polygon-based data into text-based data such that the gesture pattern is represented by textual characters, such as a text string. The text string can include, for instance, a list of polygons traversed by the gesture pattern. The text-based data is forwarded to a service that can efficiently analyze relationships that may exist among multiple gesture patterns across multiple devices or end users.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 6, 2018
    Applicant: Adobe Systems Incorporated
    Inventors: Peter Raymond Fransen, Christine Xuan Phan
  • Publication number: 20180211281
    Abstract: Techniques and systems are described in which an image similarity determination of paths is used to control digital content output. In one example, a plurality of coordinates is received that represent a plurality of physical locations within a physical environment. A digital image is then generated having a path that describes the plurality of coordinates. The path of the generated digital image is compared to a plurality of reference paths described by respective ones of a plurality of reference digital images, e.g., through image similarity. An item of digital content is selected based at least in part on the comparison. Output is then controlled of the selected item of the digital content.
    Type: Application
    Filed: January 26, 2017
    Publication date: July 26, 2018
    Applicant: Adobe Systems Incorporated
    Inventors: Peter Raymond Fransen, Christine Xuan Phan
  • Patent number: 9941757
    Abstract: In one possible embodiment, a magnet array for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators located at poles on the reinforcing side of the array.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: April 10, 2018
    Assignee: AeroVironment, Inc.
    Inventors: Bart Dean Hibbs, Bang Xuan Phan
  • Publication number: 20170213028
    Abstract: A mechanism called time-deterministic replay (TOR) that can reproduce the execution of a program, including its precise timing. Without TOR, reproducing the timing of an execution is difficult because there are many sources of timing variability. TOR uses a combination of techniques to either mitigate or eliminate most of these sources of variability. Using a prototype implementation of TOR in a Java Virtual Machine, we show it is possible to reproduce the timing to within 1.85% of the original execution. A study of one of the applications of TOR is described: the detection of a covert timing channel. Timing channels can be used to exfiltrate information from a compromised machine by subtly varying timing of the machine's outputs, TOR can detect this variation. Unlike prior solutions, which generally look for a specific type of timing channel, our approach can detect a wide variety of channels with high accuracy.
    Type: Application
    Filed: October 5, 2015
    Publication date: July 27, 2017
    Inventors: Ang Chen, Hanjun Xiao, William Bradley Moore, Andreas Haeberlen, Linh Thi Xuan Phan, Micah Sherr, Wenchao Zhou
  • Publication number: 20160211710
    Abstract: In one possible embodiment, a magnet array for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators located at poles on the reinforcing side of the array.
    Type: Application
    Filed: January 12, 2016
    Publication date: July 21, 2016
    Applicant: AeroVironment, Inc.
    Inventors: Bart Dean HIBBS, Bang Xuan PHAN
  • Patent number: 9270154
    Abstract: In one possible embodiment, a magnet array for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators located at poles on the reinforcing side of the array.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: February 23, 2016
    Assignee: AeroVironment, Inc.
    Inventors: Bart Dean Hibbs, Bang Xuan Phan
  • Publication number: 20100181858
    Abstract: In one possible embodiment, a magnet array for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators located at poles on the reinforcing side of the array.
    Type: Application
    Filed: September 23, 2009
    Publication date: July 22, 2010
    Applicant: AeroVironment, Inc.
    Inventors: Bart Dean Hibbs, Bang Xuan Phan
  • Publication number: 20100119578
    Abstract: A unique method and coatings are provided to promote/allow early stage tissue encapsulation/endothelization of medical devices while effectively controlling excessive tissue buildup by eluting antiproliferative therapeutic agent within a body of a patient. The method involves using a therapeutic agent that suppresses excessive extracellular matrix proliferation and allows/promotes thin tissue healing/encapsulation/endothelization of the device. Optimized timing of onset of elution to match onset of excessive extracellular matrix proliferation for maximum effectiveness is achieved by delay barrier with biochemical switch.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 13, 2010
    Applicant: SPECIALIZED VASCULAR TECHNOLOGIES, INC.
    Inventors: John Thao To, Charles M. Blaha, Loc Xuan Phan
  • Publication number: 20090253050
    Abstract: Described are holographic storage mediums and method of making holographic storage mediums. The holographic storage mediums may have write components that bind to the matrix to form a pattern in the media. The holographic storage mediums may also be rewriteable.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 8, 2009
    Applicant: InPhase Technologies, Inc.
    Inventors: Timothy TRENTLER, Melinda Schnoes, Michael Coles, Xuan Phan
  • Patent number: 7521154
    Abstract: Described are holographic storage mediums and method of making holographic storage mediums. The holographic storage mediums may have write components that bind to the matrix to form a pattern in the media. The holographic storage mediums may also be rewriteable.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: April 21, 2009
    Assignee: Inphase Technologies, Inc.
    Inventors: Timothy Trentler, Melinda Schnoes, Michael Coles, Xuan Phan
  • Publication number: 20050259303
    Abstract: A novel photoimageable system for a two-chemistry system containing liquid photoreactive asymmetric acrylate compound containing sulfur, aromatic moieties, and optionally bromine, and an aluminum salt compound is disclosed. The photoimageable system has high dynamic range (M/#) and sensitivity and unexpectedly high temperature and high humidity resistance. The photoimageable system retains its dynamic range when exposed to 60° C. for 4 weeks while a composition without the aluminum salt compound lost 75% of its dynamic range under similar exposure conditions. In one embodiment, 2-10 weight % of a thio-butylacrylate dissolved in a two-component urethane matrix containing 0.002 to 1 weight % of the aluminum salt compound showed a dynamic range of greater than 5 for a 200 microns thick sample and retained more than 80% of the dynamic range after 4 weeks exposure at 60° C.
    Type: Application
    Filed: May 29, 2003
    Publication date: November 24, 2005
    Inventors: Songvit Setthachayanon, Xuan Phan, Mark Michaels, Benjamin Ihas
  • Patent number: 6795138
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: September 21, 2004
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
  • Patent number: 6784953
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: August 31, 2004
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
  • Publication number: 20040027625
    Abstract: Described are holographic storage mediums and method of making holographic storage mediums. The holographic storage mediums may have write components that bind to the matrix to form a pattern in the media. The holographic storage mediums may also be rewriteable.
    Type: Application
    Filed: April 11, 2003
    Publication date: February 12, 2004
    Applicant: INPHASE TECHNOLOGIES
    Inventors: Timothy Trentler, Melinda Schnoes, Michael Coles, Xuan Phan
  • Publication number: 20030169387
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 11, 2003
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li