Patents by Inventor Xiaofeng Yang

Xiaofeng Yang 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: 20070096164
    Abstract: A ChemFET Sensing system is Described.
    Type: Application
    Filed: October 31, 2005
    Publication date: May 3, 2007
    Inventors: Kevin Peters, Xiaofeng Yang
  • Publication number: 20070099351
    Abstract: A ChemFET Sensing system is Described.
    Type: Application
    Filed: October 31, 2005
    Publication date: May 3, 2007
    Inventors: Kevin Peters, Xiaofeng Yang
  • Patent number: 7135804
    Abstract: A micro-mirror device includes a stator structure having a set of radial stator electrodes, a rotor structure having a set of radial rotor electrodes, a mirror mounted on the rotor structure, and a flexure structure suspending the rotor structure relative to the stator structure.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: November 14, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Xiaofeng Yang
  • Publication number: 20060119217
    Abstract: A micro-mirror device includes a stator structure having a set of radial stator electrodes, a rotor structure having a set of radial rotor electrodes, a mirror mounted on the rotor structure, and a flexure structure suspending the rotor structure relative to the stator structure.
    Type: Application
    Filed: January 17, 2006
    Publication date: June 8, 2006
    Inventor: Xiaofeng Yang
  • Publication number: 20060081239
    Abstract: A drop ejection device for use in a handheld inhaler is fabricated with a thin passivation layer and thin or no metal anti-cavitation layers above underlying heat transducers to provide protection for the heat transducers. A control system energizes selected heat transducers to heat fluid in the chambers, vaporizing the fluid, which is ejected through the orifices in small droplets.
    Type: Application
    Filed: March 2, 2005
    Publication date: April 20, 2006
    Inventors: Rodney Alley, Xiaofeng Yang, Kenneth Trueba
  • Publication number: 20060077217
    Abstract: A silicon die having an orifice layer with plural openings formed therein defines a drop ejection device for use in a handheld inhaler. An underlying control layer defines fluid chambers, each carrying a heat transducer. A control system energizes selected heat transducers to heat fluid in the chambers, vaporizing the fluid, which is ejected through the orifices in small droplets.
    Type: Application
    Filed: January 27, 2005
    Publication date: April 13, 2006
    Inventors: Xiaofeng Yang, Rod Alloy, Kenneth Truba
  • Patent number: 7019876
    Abstract: A micro-mirror device includes a stator structure having a set of radial stator electrodes, a rotor structure having a set of radial rotor electrodes, a mirror mounted on the rotor structure, and a flexure structure suspending the rotor structure relative to the stator structure.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: March 28, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Xiaofeng Yang
  • Publication number: 20060060191
    Abstract: A silicon die having an orifice layer with plural openings formed therein defines a drop ejection device for use in a handheld inhaler. An underlying control layer defines fluid chambers, each carrying a heat transducer. A control system energizes selected heat transducers to heat fluid in the chambers, vaporizing the fluid, which is ejected through the orifices in small droplets.
    Type: Application
    Filed: September 17, 2004
    Publication date: March 23, 2006
    Inventors: Xiaofeng Yang, Kenneth Trueba, Rod Alley, Winthrop Childers, David Tyvoll, Douglas Sexton
  • Patent number: 7009268
    Abstract: A Wheatstone bridge circuit for a sensor has: first and second sensor elements which respond to a stimulus generated when the sensor is exposed to a sample to be measured, the first and second sensor elements comprising first and second elongated n type nano width regions formed in a suitable substrate; third and fourth sensor elements which respond to the stimulus generated when the sensor is exposed to the sample to be measured, comprising third and fourth elongated p type nano width regions formed in the substrate; and interconnections which interconnect the first and second sensor elements with the third and fourth sensor elements so that the first and second sensor elements are separated from and connected to the third and fourth sensor elements in a manner to form a Wheatstone bridge configuration.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: March 7, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Xiaofeng Yang, Kevin Peters
  • Publication number: 20050242404
    Abstract: This disclosure relates to misalignment-tolerant multiplexing/demultiplexing architectures. One architecture enables communication with a conductive-structure array having a narrow spacing and pitch. Another architecture can comprise address elements having a width substantially identical to that of conductive-structures with which each of these address elements is capable of communicating. Another architecture can comprise rows of co-parallel address elements oriented obliquely relative to address lines and/or conductive structures.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 3, 2005
    Inventors: Xiaofeng Yang, Sriram Ramamoorthi, Galen Kawamoto
  • Publication number: 20050245057
    Abstract: This disclosure relates to misalignment-tolerant processes for fabricating multiplexing/demultiplexing architectures. One process enables fabricating a multiplexing/demultiplexing architecture at a tolerance greater than a pitch of conductive structures with which the architecture is capable of communicating. Another process can enable creation of address elements and conductive structures having substantially identical widths.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 3, 2005
    Inventors: Xiaofeng Yang, Sriram Ramamoorthi, Galen Kawamoto
  • Publication number: 20050245014
    Abstract: This disclosure relates to field-effect-transistor (FET) multiplexing/demultiplexing architectures and methods for fabricating them. One of these FET multiplexing/demultiplexing architectures enables decoding of an array of tightly pitched conductive structures. Another enables efficient decoding of various types of conductive-structure arrays, tightly pitched or otherwise. Also, processes for forming FET multiplexing/demultiplexing architectures are disclosed that use alignment-independent processing steps. One of these processes uses one, low-accuracy imprinting step and further alignment-independent processing steps.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 3, 2005
    Inventors: Xiaofeng Yang, Pavel Komilovich
  • Publication number: 20050239230
    Abstract: A Wheatstone bridge circuit for a sensor has: first and second sensor elements which respond to a stimulus generated when the sensor is exposed to a sample to be measured, the first and second sensor elements comprising first and second elongated n type nano width regions formed in a suitable substrate; third and fourth sensor elements which respond to the stimulus generated when the sensor is exposed to the sample to be measured, comprising third and fourth elongated p type nano width regions formed in the substrate; and interconnections which interconnect the first and second sensor elements with the third and fourth sensor elements so that the first and second sensor elements are separated from and connected to the third and fourth sensor elements in a manner to form a Wheatstone bridge configuration.
    Type: Application
    Filed: April 21, 2004
    Publication date: October 27, 2005
    Inventors: Xiaofeng Yang, Kevin Peters
  • Publication number: 20050095308
    Abstract: An apparatus for transferring heat into a product, such as a tire, formed at least in part by molding is provided. The apparatus includes a mold that has a central axis with a forming surface disposed radially outward from the central axis. A heating conduit is included and is at least partially located radially outward from the forming surface of the mold. The heating conduit is configured for use with a gas, such as saturated steam, in order to effect heat transfer to the forming surface of the mold. The heating conduit extends helically with respect to the central axis in order to allow condensation formed in the heating conduit to be drained therefrom via the force of gravity. A drainage connector may be in communication with the exit of the heating conduit and have a lower longitudinal axis than the heating conduit to allow condensation to drain more easily therefrom.
    Type: Application
    Filed: June 30, 2004
    Publication date: May 5, 2005
    Inventors: Xiaofeng Yang, Chris Kerechanin
  • Publication number: 20040017599
    Abstract: A micro-mirror device includes a stator structure having a set of radial stator electrodes, a rotor structure having a set of radial rotor electrodes, a mirror mounted on the rotor structure, and a flexure structure suspending the rotor structure relative to the stator structure.
    Type: Application
    Filed: July 29, 2002
    Publication date: January 29, 2004
    Inventor: Xiaofeng Yang
  • Publication number: 20030107794
    Abstract: A micro mirror array including an upper wafer having a plurality of movable reflective surfaces located thereon and a lower wafer located below and coupled to the upper wafer. The lower wafer has an upper surface including a plurality of electrodes located thereon for controlling the movement of the movable reflective surfaces when a voltage is applied thereto. The lower wafer further includes control electronics generally spaced away from the upper surface and coupled to the electrodes for controlling the voltages applied to the electrodes.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 12, 2003
    Inventors: James W. Siekkinen, Xiaofeng Yang
  • Patent number: 6433524
    Abstract: A resistive bridge interface circuit includes: (a) a pair of input power terminals; and (b) a resistive bridge circuit that includes a pair of parallel resistive branches coupled between the pair of input power terminals; (c) where each resistive branch of the resistive bridge interface circuit includes a voltage output terminal and a switch incorporated in series with the resistive branch; and (d) where each switch is activated at a duty cycle. In one embodiment, at least one of the resistive branches includes a variable resistor incorporated in series therewith. In an alternate embodiment, each resistive branch includes a variable resistor incorporated in series therewith, where such variable resistors vary in response to an environmental condition (such as strain experienced by the variable resistors) in opposite directions with respect to each other.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: August 13, 2002
    Assignee: Rosemount Aerospace Inc.
    Inventors: Xiaofeng Yang, Michael Nagy
  • Publication number: 20020097118
    Abstract: A switch including a first and a second conductor and a transducer. The switch includes a base and an actuator coupled to the base. The actuator includes an actuating surface and a coil located thereon such that when the switch is located in a magnetic field and a sufficient current is passed through the coil, the actuator is displaced relative to the base to an actuating position wherein the actuating surface causes the first and second conductors to be electrically coupled.
    Type: Application
    Filed: April 11, 2001
    Publication date: July 25, 2002
    Inventors: James W. Siekkinen, Chris Apanius, Brad Boggs, Kevin Stark, Xiaofeng Yang, Christopher Bang
  • Patent number: 6311561
    Abstract: A media compatible package for a pressure sensing device is made from a non-corrosive, highly chemical resistant material. The package includes a base which holds a printed circuit board having a pressure sensor mounted thereon. A sealing member is placed on the circuit board encircling the pressure sensor and a diaphragm is disposed on the sealing member. A fluid port is attached to the base and compressingly engages the diaphragm creating a sealed chamber around the pressure sensor. The sealed chamber is filled with a pressure transmissive fluid such as oil through a fill hole provided in the printed circuit board. This configuration allows the sensor package to be easily assembled with ordinary components and provides a design where all exposed surfaces of the package can be made from a highly corrosion resistive material.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: November 6, 2001
    Assignee: Rosemount Aerospace Inc.
    Inventors: Christopher A. Bang, Marcus S. Just, Xiaofeng Yang, Michael L. Nagy