Patents by Inventor An Zhang

An 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: 9422746
    Abstract: An electronic locker lock with outer and inner housings similar to that described in U.S. Pat. No. 5,886,644 has a cable connector extending from one housing to the other. When the two housings are installed against outer and inner sides of a locker door, with the door panel sandwiched between housings, the inner housing provides a pocket for storage of the cable after pin connections have been made. In addition, a locking connection is made between the two parts of the pin connector, with a plastic spring lock, preventing disconnection while the lock is in service, and the lock allows for a range of locker door thickness.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: August 23, 2016
    Assignee: Digilock Asia Ltd.
    Inventors: An Zhang, Asil T. Gokcebay
  • Publication number: 20160237399
    Abstract: The present invention pertains to a cell culture medium comprising media supplements that are shown to control recombinant protein glycosylation and/or cell culture in a controlled or modulated (shifted) temperature to control recombinant protein glycosylation and/or cell culture with controlled or modulated seed density to control recombinant protein glycosylation, and methods of using thereof. The present invention further pertains to a method of controlling or manipulating glycosylation of a recombinant protein of interest in a large scale cell culture.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 18, 2016
    Applicant: Biogen MA Inc.
    Inventors: William YANG, Yao-Ming Huang, Kyle McElearney, Lia Tescione, James Lambropoulos, An Zhang, Valerie Tsang, Thomas Ryll
  • Publication number: 20160235866
    Abstract: Porphyrin compounds useful in the field of magnetic resonance imaging (MRI) as contrast agents. The compounds are relatively lipophilic porphyrins, include one or more enzyme-reactive functional groups, and are cell membrane permeable. Relatively lipophilic group(s) can be enzymatically released within a cell to produce a relatively hydrophilic porphyrin compound.
    Type: Application
    Filed: October 6, 2014
    Publication date: August 18, 2016
    Applicants: The Governing Council of the University of Toronto, The Hospital for Sick Children
    Inventors: Xiao-An ZHANG, Inga E. HAEDICKE, Hai-Ling Margaret CHENG
  • Patent number: 9392570
    Abstract: A system for tracking mobile subscribers, the system includes an aircraft having an on-board virtual BTS that substitutes for a stationary BTS. The virtual BTS emulates a behavior of the stationary BTS so as to be indistinguishable from the stationary BTS to the mobile device, including emulation of communication protocols and billing operations The virtual BTS communicate with the mobile devices. The virtual BTS includes a processor running Software Defined Radio (SDR) and a signal amplifier, the SDR receiving identifiers of the mobile devices. The aircraft includes a high-gain antenna for determining directions of signals from the mobile devices. A camera on board the aircraft takes images or video of an area on the ground. The processor collects and processes the images or video, the directions of the signals and the identifiers of the mobile devices to locate a specific subscriber. The processor transmits the processed information to a server.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: July 12, 2016
    Assignee: GARINI TECHNOLOGIES CORPORATION PTE. LTD.
    Inventor: Quan An Zhang
  • Publication number: 20160168797
    Abstract: The present invention relates to a reusable water writing paper, as well as to its production process and an inkless printing device thereof The reusable water writing paper is consisted of a substrate as structure-support material, a color-displaying component supported on the substrate, and an optional performance-enhancing additive, wherein the color-displaying component is an oxazoline-based hydrochromic dye, which can change color obviously to display characters and/or patterns after contacting with water, and revert to the initial color to disappear the displayed characters and/or patterns after the water is removed, thereby the water writing paper is reusable. The paper is not only suitable for the exercise of writing or drawing with a brush pen, but also can be used for daily writing with a pen. Furthermore, inkless printing also can be achieved by spraying water.
    Type: Application
    Filed: September 3, 2014
    Publication date: June 16, 2016
    Inventors: Sean Xiao-An Zhang, Lan Sheng, Minjie Li
  • Patent number: 9222283
    Abstract: A combination lock, such as a dial combination cam lock, has a mechanical key override, the mechanical key extending through the manual knob of the cam lock. For a lost mechanical key situation, or to change the mechanical key, a special key or device can be inserted to enable the knob and key core or plug to be rotated to a further position not normally available. In this position the key, knob and core can be removed, then replaced with a different key and core, preferably using the same knob.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: December 29, 2015
    Assignee: Digilock Asia Ltd.
    Inventors: An Zhang, Asil T. Gokcebay
  • Publication number: 20150267442
    Abstract: An electronic lock driven by a keep solenoid has a non-direct mechanical connection between the solenoid plunger and the slidable deadbolt of the lock. The connection includes a pivoted lever connected to the plunger and a link between the lever and the deadbolt, these components being arranged in such a way that when the deadbolt is fully extended the pivot point of the lever and pivot points on both ends of the link, with the lever and with the deadbolt, are in alignment. The mechanical arrangement prevents retraction of the extended deadbolt by pushing inward on the deadbolt, which is a problem with a deadbolt driven directly by a solenoid plunger.
    Type: Application
    Filed: September 30, 2014
    Publication date: September 24, 2015
    Inventor: An Zhang
  • Publication number: 20140213491
    Abstract: Provide is an anti-burn engine oil, which comprises a base oil, and copper powder or ceramic powder having the particle diameter of 110 nm-300 nm and the aspect ratio of no greater than 3:1, wherein the amount of copper powder or ceramic powder is 25 g-100 g in per liter the base oil. The copper powder or ceramic powder contained in the engine oil can increase the potential energy of the towed particles in the cylinder and form a variety of complex movements under the relative movement of friction pair so as to not only greatly reduce the dry friction, but also have a good lubricating property and avoid the engine oil burning. At the same time, particles in motion possess the specialty of decreasing the temperature of the oil film, increasing the anti-oxidation ability of the engine oil, prolong the service life of the engine oil, and enhance the maintenance of the engine.
    Type: Application
    Filed: January 20, 2012
    Publication date: July 31, 2014
    Inventors: An Zhang, Jianliang Zhang
  • Patent number: 8133474
    Abstract: The present invention generally relates to agents and compositions having MRI and/or optical signals, and methods for their use in the determination of an analyte. In some cases, an optical, MRI, or other signal produced by the agent or composition may be affected by the presence of an analyte. Some embodiments of the present invention may provide agents or compositions which are cell permeable. Examples of analytes that may be determined by the present invention include zinc ions, calcium ions, and other biological analytes.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: March 13, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Xiao-An Zhang, Alan Pradip Jasanoff, Stephen J. Lippard
  • Patent number: 8077875
    Abstract: An audio device includes a jack, a switch, an amplifier, an internal sound producer, and a determining circuit. The jack establishes a connection with an external sound producer. The switch is in an opened state when the connection is established, and in a closed state when the connection is open. The amplifier amplifies audio signals to amplified audio signals and sends the amplified audio signals to the switch. The determining circuit receives the amplified audio signals from the switch, and generates a high voltage to control the amplifier not to output the amplified audio signals to the internal sound producer when the switch is in the closed state, and generates a low voltage to control the amplifier to output the amplified audio signals to the internal sound producer. The determined circuit further filters out the amplified audio signals when the switch is in the opened state.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: December 13, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chun-Lung Hung, Kun Huang, Shao-Lin Zhang, De-An Zhang
  • Patent number: 8073161
    Abstract: An audio apparatus includes an input, a first resistor, a first capacitor, an amplifier, a second resistor, a second capacitor, and an output. The input is used for inputting audio signals. The first resistor and the amplifier are serially connected to the input; wherein the first resistor is connected to the inverting input of the amplifier and the non-inverting input of the amplifier is connected to ground. The first capacitor has one end connected to a node between the first resistor and the inverting input of the amplifier, the other end connected to ground. The second resistor has one end connected to a node between the first resistor and the inverting input of the amplifier, the other end connected to the output of the amplifier. The second capacitor is connected between the inverting input and the output of the amplifier. The output is connected to the output of the amplifier, for outputting the audio signals after processing.
    Type: Grant
    Filed: July 27, 2008
    Date of Patent: December 6, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chun-Lung Hung, De-An Zhang, Wen-Ming Chen, Kun Huang, Jie Liu, Shao-Lin Zhang
  • Publication number: 20110269240
    Abstract: The present invention is drawn toward a chemical or biological sensor that can comprise a semi-conducting nanowire and a chemical or biological sensing molecule tethered to the semi-conducting nanowire through a spacer group including a hydrophilic reactive group. In one embodiment, the semi-conducting nanowire can be part of an array of like or similar semi-conducting nanowires. Electrical leads can provide an electrical current to the array, and a signal measurement apparatus can be electrically coupled to the array, and can be configured for detecting changes in the electrical current of the array.
    Type: Application
    Filed: March 8, 2004
    Publication date: November 3, 2011
    Inventors: Zhang-Lin Zhou, Zhiyong Li, Sean Xiao-An Zhang
  • Patent number: 8048377
    Abstract: The present invention is drawn toward a chemical or biological sensor that can comprise a semi-conducting nanowire and a chemical or biological sensing molecule tethered to the semi-conducting nanowire through a spacer group including a hydrophilic reactive group. In one embodiment, the semi-conducting nanowire can be part of an array of like or similar semi-conducting nanowires. Electrical leads can provide an electrical current to the array, and a signal measurement apparatus can be electrically coupled to the array, and can be configured for detecting changes in the electrical current of the array.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: November 1, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Zhiyong Li, Sean Xiao-An Zhang
  • Publication number: 20100276017
    Abstract: A microfluidic device (100) for controllably moving a material of interest (102) includes a holding cavity (108) configured to hold the material of interest (102) and at least one actuator (120) configured to induce an activation material (116) to expand or contract. Expansion of the activation material (116) decreases the size of the holding cavity (108) to cause the material of interest (102) to be released from the holding cavity (108) and contraction of the activation material (116) increases the size of the holding cavity (108) to cause the material of interest (102) to be received into the holding cavity (108). The at least one actuator (120) is operable at multiple levels between a zero induction level to a maximum induction level on the activation material (116) to thereby controllably expand or contract the holding cavity (108) to release or receive a specified volume of the material of interest (102).
    Type: Application
    Filed: December 1, 2009
    Publication date: November 4, 2010
    Inventors: Sean Xiao-An Zhang, Patricia A. Beck, Janice H. Nickel
  • Patent number: 7780841
    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: Grant
    Filed: February 15, 2005
    Date of Patent: August 24, 2010
    Assignee: Hewlett-Packard Development Company. L.P.
    Inventors: Sean Xiao-An Zhang, Zhiyong Li, Zhang-Lin Zhou, William M. Tong, R. Stanley Williams, Yong Chen
  • Patent number: 7782408
    Abstract: A three-dimensional molecular assembly and method of formation are provided. The molecular assembly is formed on a substrate. The molecular assembly comprises: a first monolayer of seed molecules for initiating self-assembled molecular growth, the first monolayer formed on the substrate; a second monolayer of active molecules comprising a plurality of rotor and stator moieties, with one rotor moiety supported between two stator moieties, the second monolayer of active molecules formed on the first monolayer of seed molecules, with a one-to-one correspondence between molecules in the first monolayer and the second monolayer; a third monolayer of spacer molecules, formed on the second monolayer of active molecules, with a one-to-one correspondence between molecules in the second monolayer and the third monolayer; and a plurality of alternating second monolayers and third monolayers having the one-to-one correspondence.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: August 24, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Xiao-An Zhang, Sui-Hing Leung, Kent D. Vincent, Zhang-Lin Zhou
  • Patent number: 7714438
    Abstract: Molecular systems are provided for electric field activated switches, such as a crossed-wire device or a pair of electrodes to which the molecular system is linked by linking moieties. The crossed-wire device comprises a pair of crossed wires that form a junction where one wire crosses another at an angle other than zero degrees and at least one connector species connecting the pair of crossed wires in the junction. The connector species comprises the molecular system, which has an electric field induced band gap change, and thus a change in its electrical conductivity, that occurs via one of the following mechanisms: (1) molecular conformation change; (2) change of extended conjugation via chemical bonding change to change the band gap; or (3) molecular folding or stretching. Nanometer-scale reversible electronic switches are thus provided that can be assembled easily to make cross-bar circuits, which provide memory, logic, and communication functions.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: May 11, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Xiao-An Zhang, R. Stanley Williams, Kent D. Vincent
  • Patent number: 7692189
    Abstract: A colorant molecule is provided that includes at least one switch unit. The switch unit comprises ring-based tautomers, of which there may be more than one per chromophore, and may include donor and/or acceptor moieties.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: April 6, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kent D. Vincent, Xian-An Zhang, Zhou-Lin Zhou
  • Patent number: 7677720
    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: Grant
    Filed: August 2, 2005
    Date of Patent: March 16, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kent D. Vincent, Sivapackia Ganapathiappan, Sean Xiao-An Zhang, Palitha Wickramanayake
  • Patent number: 7663433
    Abstract: An audio amplifier is provided. The audio amplifier includes an amplifier, a biasing circuit, and a time-delay circuit. The amplifier circuit is for amplifying audio signals. The biasing circuit is for providing a bias voltage to the amplifier circuit to actuate the amplifier circuit. The time-delay circuit is for receiving a pulse signal and delaying the bias voltage to avoid a sudden actuation of the amplifier circuit based on the pulse signal. The time-delay circuit comprises a first input for receiving the pulse signal, a first resistor coupled to the first input, a first output coupled to the biasing circuit, a first BJT whose base, emitter, collector are respectively coupled to the first resistor, ground, and the first output.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: February 16, 2010
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chun-Lung Hung, Wen-Ming Chen, Jie Liu, De-An Zhang, Wang-Chang Duan, Tao Wang