Patents by Inventor Sean Zhang

Sean 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).

  • Publication number: 20080258103
    Abstract: Various embodiments of the present invention are directed to methods for manufacturing complex, anisotropic materials with desirable properties for information storage, processing, and display. Certain of these methods involve employing a magnetic field during manufacture to induce desired orientations of precursors, subunits, and/or molecular subassemblies. The applied magnetic field steers the precursors, subunits, and/or molecular subassemblies into desirable orientations while the precursors, subunits, and/or molecular subassemblies are assembled or self-assemble into a complex, anisotropic material. One embodiment of the present invention is a class of new, complex, well-ordered, network-like materials that include a ferromagnetic-material-based framework in which organic and/or organometallic compounds are organized.
    Type: Application
    Filed: June 19, 2008
    Publication date: October 23, 2008
    Inventors: Patricia A. Beck, Sean Zhang
  • Patent number: 7390540
    Abstract: Various embodiments of the present invention are directed to methods for manufacturing complex, anisotropic materials with desirable properties for information storage, processing, and display. Certain of these methods involve employing a magnetic field during manufacture to induce desired orientations of precursors, subunits, and/or molecular subassemblies. The applied magnetic field steers the precursors, subunits, and/or molecular subassemblies into desirable orientations while the precursors, subunits, and/or molecular subassemblies are assembled or self-assemble into a complex, anisotropic material. One embodiment of the present invention is a class of new, complex, well-ordered, network-like materials that include a ferromagnetic-material-based framework in which organic and/or organometallic compounds are organized.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: June 24, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Patricia A. Beck, Sean Zhang
  • Publication number: 20080097352
    Abstract: A method of fabricating a microneedle is disclosed. The method includes forming at least one recess in a substrate, the at least one recess comprising an apex, forming an electrically seed layer on the substrate including the at least one recess, forming at least one electrically nonconductive pattern on a portion of the seed layer, the at least one nonconductive pattern being a pattern for a sensory area, plating an electrically conductive material on the seed layer to create a plated layer with an opening that exposes a portion of the nonconductive pattern and separating the plated layer from the seed layer and the at least one nonconductive pattern to release a hollow microneedle comprising a tip and at least one sensory area.
    Type: Application
    Filed: September 12, 2006
    Publication date: April 24, 2008
    Inventors: Patricia A. Beck, Ramesh Govinda Raju, Xio-An Sean Zhang
  • Publication number: 20080065176
    Abstract: This invention discloses an apparatus for skin treatments. The apparatus comprising a chamber placed on a skin target which is formed with an aperture on the distal end thereof; means for applying vacuum to said chamber, therefore the skin target is able to be treated upon the applied vacuum; and/or means for supplying negative ion into said chamber; and c) at least one light source with one wavelength or multi-wavelength, wherein the light source is arranged inside the chamber to provide optical energy in the predetermined wavelength(s) through the aperture to the skin target. With the assistance of negative ion as well as vacuum, the skin treatment will be improved because it purifies the air and relieves stress to enhance activation of skin cell, accelerate blood cycle.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 13, 2008
    Inventors: Sean Zhang, Shijie Gu, Huiyun Ge
  • Publication number: 20080060995
    Abstract: A composition of matter and methods to produce the same. The composition of matter includes a thin film and a plurality of smooth-surfaced through-holes extending through the thin film. The thin film may have a thickness of between 200 nm and 150 ?m. The through-holes may have a diameter of between 20 nm and 2500 nm.
    Type: Application
    Filed: September 12, 2006
    Publication date: March 13, 2008
    Inventors: Sean Zhang, Janice H. Nickel, Patricia A. Beck, Lung Tran, Shuhuai Yao
  • Publication number: 20070264516
    Abstract: A molecular layer includes a Langmuir-Blodgett (LB) film of a molecule connected to a plurality of active device molecules, the molecule having a moiety with first and second connecting groups at opposed ends of the moiety. Each of the plurality of active device molecules includes a switching moiety, a self-assembling connecting group at one end of the switching moiety, and a linking group at an opposed end of the moiety. One or more defect site(s) exist between the plurality of active device molecules. A respective number of the first connecting groups of the LB film are connected to the plurality of active device molecules via at least some of the linking groups such that the LB film covers the plurality of active device molecules and the one or more defect site(s).
    Type: Application
    Filed: July 3, 2007
    Publication date: November 15, 2007
    Inventors: Sean Zhang, Yong Chen
  • Publication number: 20070189058
    Abstract: A molecular system that is reversibly switchable between four states includes two or more ends. At least three rotors and at least two stators are located between the ends. Each of the rotors is capable of rotating when under the influence of an electric field having a predetermined strength. The predetermined strength of the electric field for rotating one of the rotors is different than that of the predetermined strength of the electric field for rotating each of the other rotors. One or more conjugated connecting units links at least one of the at least three rotors and at least one of the at least two stators. The rotation of at least one of the at least three rotors switches the molecular system to one of the four states.
    Type: Application
    Filed: February 13, 2006
    Publication date: August 16, 2007
    Inventors: Zhang-Lin Zhou, Kent Vincent, Sean Zhang
  • Publication number: 20060285728
    Abstract: A system and method of capturing a skin print from skin having ridges and valleys. A skin print sensor having a return/supply contact and a plurality of contact pads is provided. A finger is applied to the skin print sensor and data is stored representative of contact pads in contact with skin ridges.
    Type: Application
    Filed: June 21, 2005
    Publication date: December 21, 2006
    Inventors: Sui-hing Leung, Sean Zhang, Chung Yang
  • Publication number: 20060283465
    Abstract: A smart drug delivery system is disclosed. The system includes a sensor component, an analytical component coupled to the sensor component and a drug delivery component coupled to the analytical component for delivering a drug to a host.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 21, 2006
    Inventors: Janice Nickel, Peter Hartwell, Sean Zhang
  • Publication number: 20060221193
    Abstract: A visualizer is provided. The visualizer includes a camera lens capturing an image of an object; an image sensing element generating a signal in response to the image of the object; an analog-to-digital converter converting the signal into a digital signal; a transmitting terminal electrically connected to the analog-to-digital converter and transmitting the digital signal through the low voltage differential signal technology; and a receiving terminal receiving the digital signal.
    Type: Application
    Filed: February 10, 2006
    Publication date: October 5, 2006
    Applicant: LUMENS DIGITAL OPTICS INC
    Inventor: Sean Zhang
  • Publication number: 20060183165
    Abstract: A sensing unit comprises a chemical sensing element and a transducer operatively associated therewith, wherein the chemical sensing element comprises at least one receptor for receiving a molecule of an analyte. An array of chemical sensing units is also provided, together with a chemical sensor system and a method of detecting and identifying the analyte.
    Type: Application
    Filed: February 15, 2005
    Publication date: August 17, 2006
    Inventors: Sean Zhang, Sui-Hing Leung
  • Publication number: 20060180480
    Abstract: A sensor array for sensing at least one of chemical moieties and biological moieties is provided. The sensor array comprises a plurality of working electrodes electrically associated with a reference electrode, each working electrode in combination with the reference electrode forming a transducer. Each working electrode is provided with a coating of a sensing element comprised of an ionizable moiety and a functional group sensitive to one of the chemical and/or biological moieties.
    Type: Application
    Filed: February 15, 2005
    Publication date: August 17, 2006
    Inventors: Sean Zhang, Zhiyong Li, Zhang-Lin Zhou, William Tong, R. Williams, Yong Chen
  • Publication number: 20060060837
    Abstract: Classes of molecules are disclosed which can, for example, be used in molecular switches. The classes of molecules include at least three segments—an electronic donor (“D”), a switchable bridge (“B”), and an electronic acceptor (“A”)—chemically connected and linearly arranged (e.g., D-B-A). The electronic donor can be an aromatic ring system with at least one electron donating group covalently attached; an aromatic ring system with an electron withdrawing group covalently attached is usually employed as the electronic acceptor; and the switchable bridge can be a pi system that can be switched on or off using an external electric field.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 23, 2006
    Inventors: Sean Zhang, Zhang-Lin Zhou, Kent Vincent, R. Williams
  • Publication number: 20060060836
    Abstract: The invention described herein includes a molecular switch, comprising: a donor subunit; an acceptor subunit; and an aromatic bridging subunit comprising one or more bridging groups for bonding the donor subunit to the aromatic bridging subunit and for bonding the acceptor subunit to the aromatic bridging subunit wherein the aromatic bridging subunit is conformable in a manner effective for polarizing and de-polarizing the molecular switch at a low electric field voltage.
    Type: Application
    Filed: September 21, 2004
    Publication date: March 23, 2006
    Inventors: Sean Zhang, Kent Vincent, Zhang-Lin Zhou, R. Williams
  • Publication number: 20060016516
    Abstract: Various embodiments of the present invention are directed to methods for manufacturing complex, anisotropic materials with desirable properties for information storage, processing, and display. Certain of these methods involve employing a magnetic field during manufacture to induce desired orientations of precursors, subunits, and/or molecular subassemblies. The applied magnetic field steers the precursors, subunits, and/or molecular subassemblies into desirable orientations while the precursors, subunits, and/or molecular subassemblies are assembled or self-assemble into a complex, anisotropic material. One embodiment of the present invention is a class of new, complex, well-ordered, network-like materials that include a ferromagnetic-material-based framework in which organic and/or organometallic compounds are organized.
    Type: Application
    Filed: July 21, 2004
    Publication date: January 26, 2006
    Inventors: Patricia Beck, Sean Zhang
  • Publication number: 20060003594
    Abstract: A molecule for Langmuir-Blodgett (LB) deposition of a molecular layer. The molecule includes at least one switching moiety, a hydrophilicity-modifiable connecting group attached to one end of the moiety, and a hydrophilicity-non-modifiable connecting group attached to the other end of the moiety. The hydrophilicity-modifiable connecting group is transformable to a temporary end group upon adjustment in pH of the aqueous environment containing the molecule. The temporary end group is more hydrophilic than the hydrophilicity-modifiable connecting group and the hydrophilicity-non-modifiable connecting group. The difference in hydrophilicity between the temporary end group and the hydrophilicity-non-modifiable connecting group causes formation of a substantially well-oriented, uniform LB film at a water/solvent and/or water/air interface.
    Type: Application
    Filed: June 30, 2004
    Publication date: January 5, 2006
    Inventors: Sean Zhang, Douglas Ohlberg, Zhiyong Li
  • Publication number: 20060001020
    Abstract: A method includes chemically bonding a polymeric material to a self-assembled molecular film that is chemically bonded to a surface of a substrate. The self-assembled molecular film includes one or more defect sites and a plurality of active device molecules, each of the plurality of active device molecules including a molecular switching moiety having a self-assembling connecting group at one end of the moiety and a linking group at an opposed end of the moiety. The polymeric material chemically bonds to at least some of the linking groups of the plurality of active device molecules, causing the formation of the self-assembled molecular layer covering the plurality of active device molecules and the defect site(s).
    Type: Application
    Filed: June 30, 2004
    Publication date: January 5, 2006
    Inventors: Sean Zhang, Sui-Hing Leung
  • Publication number: 20060003265
    Abstract: A molecular layer includes a Langmuir-Blodgett (LB) film of a molecule connected to a plurality of active device molecules, the molecule having a moiety with first and second connecting groups at opposed ends of the moiety. Each of the plurality of active device molecules includes a switching moiety, a self-assembling connecting group at one end of the switching moiety, and a linking group at an opposed end of the moiety. One or more defect site(s) exist between the plurality of active device molecules. A respective number of the first connecting groups of the LB film are connected to the plurality of active device molecules via at least some of the linking groups such that the LB film covers the plurality of active device molecules and the one or more defect site(s).
    Type: Application
    Filed: June 30, 2004
    Publication date: January 5, 2006
    Inventors: Sean Zhang, Yong Chen
  • Publication number: 20060002176
    Abstract: A method of attaching a molecular layer to a substrate includes attaching a temporary protecting group(s) to a molecule having a molecular switching moiety with first and second connecting groups attached to opposed ends thereof. The temporary protecting group(s) is attached to the first and/or second connecting group so as to cause the opposed ends of the switching moiety to exhibit a difference in hydrophilicity such that one of the ends remains at at least one of a water/solvent interface and a water/air interface, and the other end remains in air during a Langmuir-Blodgett (LB) process. An LB film is formed on the interface. The temporary protecting group(s) is removed. The substrate is passed through the LB film to form the molecular layer chemically bonded on the substrate. The difference in hydrophilicity between the opposed ends causes formation of a substantially well-oriented, uniform LB film at the interface.
    Type: Application
    Filed: June 30, 2004
    Publication date: January 5, 2006
    Inventors: Sean Zhang, Zhang-lin Zhou, Yong Chen
  • Publication number: 20050270350
    Abstract: Ceramic pigment-based, chemically-modified porous coatings can be used for enhancing image permanence of ink-jet image printing. Specifically, a porous coated media sheet, comprising a media substrate, having a porous coating coated thereon comprising a modified ceramic pigment including a fixer group and a stabilizer group, each covalently attached to the ceramic pigment is disclosed. Additionally, a method and system for preparing permanent ink-jet images is also provided.
    Type: Application
    Filed: August 2, 2005
    Publication date: December 8, 2005
    Inventors: Kent D. Vincent, Sivapackia Ganapathiappan, Sean Zhang, Palitha Wickramanayake