Patents by Inventor Xuan Zhang

Xuan Zhang 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).

  • Patent number: 7579581
    Abstract: A system for optically detecting an electrical arc in a power supply. The system includes a light pipe, a photodetector optically coupled to the light pipe, and a signal processor connected to the photodetector.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: August 25, 2009
    Assignee: Siemens Energy & Automation, Inc.
    Inventors: Marc F. Aiello, Edward Alan Cheesman, Xuan Zhang
  • Patent number: 7581211
    Abstract: On demand tracking of applications is provided by a mechanism of the present invention. After a user selects one or more units of execution of interest, a marker is assigned to each target object. Upon invocation of an application, an event is sent to an event handler if at least one target object is executed. The event handler gathers a process identifier and initiates a debugging, tracing or logging of the process on a target system.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: August 25, 2009
    Assignee: International Business Machines Corporation
    Inventors: Sean Eric Babineau, Vadim Berestetsky, Xuan Zhang Chen, Li Ding
  • Publication number: 20090062428
    Abstract: An elastomer composite includes the coagulated product of a mixture of a particulate slurry and a latex blend comprising skim latex and at least one of field latex and latex concentrate.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 5, 2009
    Inventors: Xuan Zhang, Michael D. Morris
  • Publication number: 20090054910
    Abstract: A method and a device for computer assisted distal locking of intramedullary nails comprising the steps of: A) establishing a virtual geometric representation of an intramedullary nail (1); B) acquiring a first medical image (28) using a radioscopic unit (25) with its focal line (23) adjusted at an angle between 0° and 30° to the axis (8,9) of the at least one distal locking hole (3,4); C) acquiring a second medical image using a radioscopic unit (25) with its focal line (23) adjusted at an angle between 60° and 90° to the axis (8,9); D) computing the position of the longitudinal axis (2) of the distal part (5) of the intramedullary nail (1) using said first and second medical image and said virtual geometric representation by means of a computer (40); E) computing the position of the axis (8,9) of the at least one distal locking hole (3,4) using said first and second medical image (28,29); F) transferring information related to the positions of the distal part (5) and the at least one distal locking hole (3,
    Type: Application
    Filed: December 15, 2006
    Publication date: February 26, 2009
    Applicant: AO TECHNOLOGY AG
    Inventors: Guoyan Zheng, Xuan Zhang
  • Publication number: 20090009149
    Abstract: A system and method for limiting input voltage to a power delivery system having regeneration capability. According to various embodiments, the system includes a regulator having a multiple input variables and at least one output variable; and an accumulator in communication with the regulator wherein the accumulator presets the output of the regulator to facilitate a quick output as well as accumulates error values related to the multiple input variables and facilitates a change by the regulator to the at least one output variable based upon the accumulated values.
    Type: Application
    Filed: July 3, 2008
    Publication date: January 8, 2009
    Applicant: Siemens Energy & Automation, Inc.
    Inventors: JOHN CHANNING BOUSFIELD, III, XUAN ZHANG, RONALD GAILLOT
  • Patent number: 7461347
    Abstract: A distributed collaborative computer system that supports document sharing is provided that comprises a plurality of server computers interconnected via a high-speed link. Client computers can connect to any available server computer and start or join a conference hosted on either the server computer to which the client computer is connected or any other server in the system. As a result, the system and method of the present invention allow document sharing among an arbitrary number of client computers.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: December 2, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Min Zhu, Xuan Zhang
  • Publication number: 20080281334
    Abstract: A method for computer assisted localization of the distal locking holes (11; 14) of an implanted intramedullary nail (2) having a nail axis (19) and a first and second distal locking hole (11; 14) by A) acquiring one single image IM of the distal end section (25) of said intramedullary nail by means of an X-ray device (9) whose optical axis (30) is oriented essentially perpendicular to the nail axis (19) but irrespective to the orientation of the distal locking holes (11; 14); and B) calculating the position of the first and second hole axis (23; 20) of the first and second distal locking hole (11; 14) with respect to a three-dimensional coordinate system A-COS (7) of the implanted intramedullary nail (2).
    Type: Application
    Filed: August 15, 2006
    Publication date: November 13, 2008
    Applicant: AO TECHNOLOGY AG
    Inventors: Guoyan Zheng, Xuan Zhang
  • Patent number: 7414866
    Abstract: A method for smoothing input current to a power delivery system having regeneration capability. The method comprises evaluating input current to an input converter of the power delivery system for a first fundamental cycle, and shifting a window relative to a waveform of an input voltage after the first fundamental cycle. The method also comprises evaluating input current to the input converter for a second fundamental cycle, and determining whether the input current of the second fundamental cycle is smoother than the input current of the first fundamental cycle.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: August 19, 2008
    Assignee: Siemens Energy & Automation, Inc.
    Inventor: Xuan Zhang
  • Publication number: 20080080213
    Abstract: A method for smoothing input current to a power delivery system having regeneration capability. The method comprises evaluating input current to an input converter of the power delivery system for a first fundamental cycle, and shifting a window relative to a waveform of an input voltage after the first fundamental cycle. The method also comprises evaluating input current to the input converter for a second fundamental cycle, and determining whether the input current of the second fundamental cycle is smoother than the input current of the first fundamental cycle.
    Type: Application
    Filed: September 28, 2006
    Publication date: April 3, 2008
    Inventor: Xuan Zhang
  • Publication number: 20080055800
    Abstract: A system for optically detecting an electrical arc in a power supply. The system includes a light pipe, a photodetector optically coupled to the light pipe, and a signal processor connected to the photodetector.
    Type: Application
    Filed: May 18, 2007
    Publication date: March 6, 2008
    Applicant: SIEMENS ENERGY & AUTOMATION, INC.
    Inventors: Marc F. Aiello, Edward Alan Cheesman, Xuan Zhang
  • Publication number: 20070268482
    Abstract: A method for optically detecting an electrical arc in a power supply. The method includes capturing light with a light pipe, transmitting the captured light along at least a portion of a length of the light pipe, optically detecting the transmitted light with a photodetector which is optically coupled to the light pipe, generating a signal indicative of an intensity of the detected light, and determining whether the detected light is associated with an electrical arc.
    Type: Application
    Filed: May 18, 2007
    Publication date: November 22, 2007
    Applicant: Siemens Energy & Automation, Inc.
    Inventors: Marc Aiello, Edward Cheesman, Xuan Zhang
  • Publication number: 20070165527
    Abstract: A method of rate-control for a group of ports in a communication network. Ramping is performed for allowed-rate of each of the group of ports, if sum of the ingress-rates of the group of ports is less than a given rate threshold; and adjusting is performed for allowed-rate of each of the group of ports, if sum of the ingress-rates of the group of ports is greater than or equal to the given rate threshold, such that the sum of allowed-rates of the group of ports is equal to the given rate threshold.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 19, 2007
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Robert Sultan, Stein Gjessing, Xuan Zhang, Zhusheng Deng, Xixiang Li, Jianfei He
  • Publication number: 20070046252
    Abstract: A power cell system includes a structure that provides multiple power cell locations. The system also includes at least one regenerative power cell, and at least one non-regenerative power cell. The cell locations and power cells are sized and positioned so that each cell location may interchangeably accept either a regenerative power cell or a non-regenerative power cell.
    Type: Application
    Filed: August 29, 2006
    Publication date: March 1, 2007
    Inventors: Marc Aiello, Xuan Zhang
  • Publication number: 20060188904
    Abstract: Disclosed herein are single reactant components immobilized over single electrodes and methods of making and using thereof. Devices, such as biosensors, comprising the single reactant components immobilized over single electrodes are also disclosed. Assays using the single reactant components immobilized over single electrodes are disclosed as well as databases comprising signature pattern vectors for reactant components.
    Type: Application
    Filed: January 13, 2006
    Publication date: August 24, 2006
    Inventors: Mihrimah Ozkan, Cengiz Ozkan, Mo Yang, Xuan Zhang, Shalini Prasad
  • Publication number: 20060064052
    Abstract: An electrochemically actuated liquid delivering device which is capable of releasing specific volumes of liquid at desired flow rates. The device includes a sealed electrolytic chamber which is adapted to contain an electrolyte and has at least one pair of electrodes which are at least partially in contact with the electrolyte. It also has a liquid chamber formed of a rigid material which is housed at least partially within the electrolytic chamber and is adapted to contain a liquid. It has pressure transfer means separating the electrolytic chamber from the liquid chamber and administering means which is adapted to release the liquid from the liquid chamber under the influence of pressure applied to the liquid chamber. The device is arranged so that when current is passed through the electrolyte via the electrodes, gas is generated from the electrolyte thereby increasing pressure inside the electrolytic chamber.
    Type: Application
    Filed: August 7, 2002
    Publication date: March 23, 2006
    Applicant: Agency for Science, Technology & Research
    Inventors: Xuan Zhang, Yuan Xu, Yen Kong, Kui Yao, Xu He
  • Publication number: 20050216847
    Abstract: A distributed collaborative computer system that supports document sharing is provided that comprises a plurality of server computers interconnected via a high-speed link. Client computers can connect to any available server computer and start or join a conference hosted on either the server computer to which the client computer is connected or any other server in the system. As a result, the system and method of the present invention allow document sharing among an arbitrary number of client computers.
    Type: Application
    Filed: January 28, 2005
    Publication date: September 29, 2005
    Inventors: Min Zhu, Xuan Zhang
  • Publication number: 20050198141
    Abstract: A distributed collaborative computer system is provided that comprises a plurality of server computers interconnected via a high-speed link. Client computers can connect to any available server computer and start or join a conference hosted on either the server computer to which the client computer is connected or any other server in the system. As a result, the system and method of the present invention is easily scalable to support an arbitrary number of participants to a conference by merely adding the appropriate number of server computers to the system. In addition, by replicating the conference information on more than one server computer, the single point of failure limitation is eliminated. In fact, if a server hosting or participating in a conference malfunctions, the failure is detected by other server computers and the client computer is able to reconnect to the conference through a new server computer.
    Type: Application
    Filed: February 4, 2005
    Publication date: September 8, 2005
    Inventors: Min Zhu, Xuan Zhang
  • Publication number: 20050150766
    Abstract: A capillary electrophoresis microchip (1) including at least one capillary electrophoresis separation unit (3), a capillary electrophoresis system incorporating the same, and a capillary electrophoresis separation method, each separation unit comprising: a separation channel (5) in which analytes of a sample plug are in use separated, wherein the separation channel has a first width; and a sample channel (9) fluidly connected to the separation channel through which a sample plug is in use introduced into the separation channel, wherein the sample channel has a second width which is smaller than the first width of the separation channel at least at intersection of the sample channel (9) and the separation channel (5).
    Type: Application
    Filed: November 2, 2001
    Publication date: July 14, 2005
    Inventors: Andreas Manz, Chao-Xuan Zhang
  • Patent number: 6901448
    Abstract: A method of distributed collaborative computing is provided. The method includes: partitioning a collaboration function into sub-functions; assigning at least one said sub-function to each of a plurality of logical processes; associating a respective management process with each of said plurality of logical processes, said logical processes configured so that each said logical process is capable of communicating with every other said logical process through said respective management process; communicating between said logical processes using said respective management processes; and monitoring said respective management processes with a single supervisor process; wherein said communicating employs a secure protocol on a dedicated network.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: May 31, 2005
    Assignee: Webex Communications, Inc.
    Inventors: Min Zhu, Xuan Zhang
  • Patent number: 6858661
    Abstract: An exemplary admixture system for cementitious compositions, comprises a polycarboxylic acid type water reducer and a tertiary amine defoamer having an average molecular weight of 100-1500 and more preferably 200-750. The defoamer permits a stable admixture formulation and helps to achieve a controllable level of entrained air in a concrete mix. Cementitious compositions and methods for modifying the same, using the tertiary amine defoamers, are also described herein.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: February 22, 2005
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Xuan Zhang, Josephine Ho-Wah Cheung, Ara Avedis Jeknavorian