Patents by Inventor Dong Cai

Dong Cai 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: 11124899
    Abstract: The present disclosure discloses a method for preparing cellulose fiber. The method includes the following steps: 1) mixing cellulose pulp with NMMO aqueous solution of a mass concentration of 60%-85%, preferably 70% to 76%, to obtain a uniform mixture; 2) subjecting the obtained uniform mixture to dewatering for swelling, dissolution, and deaerating to obtain a cellulose spinning stock solution; 3) the cellulose spinning stock solution entering into a spinning machine after being filtered and heat exchange, and entering into a coagulation system after carrying out extruding by a spinneret-pack and cooling by air, and then coagulating in a NMMO coagulating bath of a mass concentration of 50% to 72% to obtain nascent fiber; and 4) subjecting the nascent fiber to rinsing to obtain a fiber filament bundle, and then, performing subsequent-section treatment to obtain cellulose fiber.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: September 21, 2021
    Inventors: Yushan Sun, Ting Li, Chunzu Cheng, Libing Ding, Jian Cai, Qiang Luo, Yunan Zhou, Dong Zhang, Jigang Xu
  • Publication number: 20210286202
    Abstract: Various embodiments of a coplanar waveguide (CPW) transmission line as well as a silicon-based electro-optic (E-O) modulator comprising the CPW transmission line are described. The CPW transmission line has a curved or winding shape. The silicon-based E-O modulator includes a rib optical waveguide, a beam splitter, a beam combiner, and a CPW transmission line that exhibits the winding shape. At least one of the two optical arms of the rib optical waveguide alternately and periodically extends through a first groove and a second groove of the CPW transmission line. The plurality of active sections of the rib optical waveguide are evenly distributed on both sides of the CPW transmission line to suppress undesired transmission modes. An increased length of transmission path of the rib optical waveguide is also avoided or minimized, thereby reducing the transmission speed mismatch of the E-O modulator, which is essential for achieving high-speed operation.
    Type: Application
    Filed: March 6, 2021
    Publication date: September 16, 2021
    Inventors: Yadong Liu, Pengfei Cai, Tzung-I Su, Dong Pan
  • Patent number: 11115125
    Abstract: Various embodiments of a monolithic transceiver are described, which may be fabricated on a semiconductor substrate. The monolithic transceiver includes a coherent receiver module (CRM), a coherent transmitter module (CTM), and a local oscillation splitter to feed a local oscillation to the CRM and the CTM with a tunable power ratio. The monolithic transceiver provides tunable responsivity by employing avalanche photodiodes (APDs) for opto-electrical conversion. The monolithic transceiver also employs a polarization beam rotator-splitter (PBRS) and a polarization beam rotator-combiner (PBRC) for supporting modulation schemes including polarization multiplexed quadrature amplitude modulation (PM-QAM) and polarization multiplexed quadrature phase shift keying (PM-QPSK).
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: September 7, 2021
    Assignee: SIFOTONICS TECHNOLOGIES CO., LTD.
    Inventors: Pengfei Cai, Zhou Fang, Yi Li, Ning Zhang, Rangchen Yu, Ching-yin Hong, Dong Pan
  • Publication number: 20210274106
    Abstract: A video processing method, apparatus, and device and a storage medium are provided. The method includes: monitoring an operation indication inputted by a user through a personal homepage on a social platform, the personal homepage being used for displaying personal information of the user; obtaining, when the operation indication is a shooting indication for shooting a personal status video, the personal status video; uploading the personal status video to a back-end server of the social platform; and displaying indication information of the personal status video in a personal-information display region of the personal homepage.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Inventors: Man LIU, Su CAO, Hongfa QIU, Zhe YAN, Mingsan WANG, Qinhong ZHENG, Qi TANG, Ziping HE, Shihai CHENG, Dong HUANG, Dongxuan ZHANG, Runjia HUANG, Junjie ZHOU, Jingchao SUO, Jin JIANG, Yong LI, Zhenfeng CAI, Yuewei CHEN, Leteng WENG, Zhenan GUAN, Yuan ZHAO, Yiheng LIU, Ying QI
  • Patent number: 11108712
    Abstract: A method, system and computer program product for processing messages sent to a recipient. The communication channel used to send the message is identified, where such a communication channel is not currently being used by the recipient. After identifying the communication channel(s) currently being used by the recipient, the contact information of users who have previously communicated with the recipient using the communication channel(s) currently being used by the recipient are analyzed. The message is then marked with the identity of the sender as well as the communication channel used by the sender after matching the contact information of the sender with the contact information of a user who had previously communicated with the recipient using the communication channel(s) currently being used by the recipient. The marked message is then sent to the recipient using a communication channel currently being used by the recipient.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: August 31, 2021
    Assignee: International Business Machines Corporation
    Inventors: Xiang Cai, Yan Fen Guo, Dong Rui Li, Xiao Jian Lian, Cheng Fang Wang, Hong Dong Zhao
  • Patent number: 10316058
    Abstract: A method of extracting biomolecules from live cells comprising: introducing a plurality of magnetized carbon nanotubes (MCNTs) into a live cell, wherein the MCNTs penetrate the cell membrane under a magnetic force; spearing the MCNTs through the cell under the magnetic force, wherein a biomolecule attaches to at least a portion of the MCNTs to form a biomolecule loaded MCNT; removing at least a portion of the biomolecule loaded MCNTs from the cell under the magnetic force; and collecting at least a portion of the biomolecule loaded MCNTs.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: June 11, 2019
    Assignee: UNIVERSITY OF HOUSTON SYSTEM
    Inventors: Zhifeng Ren, Dong Cai, Zhen Yang
  • Publication number: 20180369140
    Abstract: A method of selectively targeting a cell with a therapeutic agent, the method comprising: targeting a cell with a nanospear, puncturing the cell with said nanospear; releasing a therapeutic agent from said nanospear, wherein said therapeutic agent enters said cell, thereby effecting the efficacy of said cell.
    Type: Application
    Filed: July 9, 2018
    Publication date: December 27, 2018
    Inventors: Zhifeng REN, Dong CAI, Jay-Jiguang ZHU
  • Patent number: 9846553
    Abstract: Organization and management of key-value stores is described. An example method includes providing a stack of tables. Each of the tables includes a set of pages of a pre-determined size for storing a set of key-value entries. The method includes monotonically decreasing a number of pages in the tables according to a position of the table in the stack. The method includes configuring each of the pages in the tables to address a particular range of a key space in such a way that each of the pages in a subsequent table in the stack is configured to address a range addressed by at least two pages in a preceding table in the stack. An action with a key-value entry is carried out by starting with a table in the top of the stack and moving to the next table if the action cannot be carried out.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: December 19, 2017
    Assignee: Exablox Corporation
    Inventors: Sridhar Subramaniam, Dong Cai
  • Publication number: 20170322748
    Abstract: Organization and management of key-value stores is described. An example method includes providing a stack of tables. Each of the tables includes a set of pages of a pre-determined size for storing a set of key-value entries. The method includes monotonically decreasing a number of pages in the tables according to a position of the table in the stack. The method includes configuring each of the pages in the tables to address a particular range of a key space in such a way that each of the pages in a subsequent table in the stack is configured to address a range addressed by at least two pages in a preceding table in the stack. An action with a key-value entry is carried out by starting with a table in the top of the stack and moving to the next table if the action cannot be carried out.
    Type: Application
    Filed: May 4, 2016
    Publication date: November 9, 2017
    Inventors: Sridhar Subramaniam, Dong Cai
  • Publication number: 20170258714
    Abstract: A method of selectively targeting a cell with a therapeutic agent, the method comprising: targeting a cell with a nanospear, puncturing the cell with said nanospear; releasing a therapeutic agent from said nanospear, wherein said therapeutic agent enters said cell, thereby effecting the efficacy of said cell.
    Type: Application
    Filed: May 1, 2017
    Publication date: September 14, 2017
    Applicant: University of Houston System
    Inventors: Zhifeng REN, Dong CAI, Jay-Jiguang ZHU
  • Publication number: 20170233435
    Abstract: A method of extracting biomolecules from live cells comprising: introducing a plurality of magnetized carbon nanotubes (MCNTs) into a live cell, wherein the MCNTs penetrate the cell membrane under a magnetic force; spearing the MCNTs through the cell under the magnetic force, wherein a biomolecule attaches to at least a portion of the MCNTs to form a biomolecule loaded MCNT; removing at least a portion of the biomolecule loaded MCNTs from the cell under the magnetic force; and collecting at least a portion of the biomolecule loaded MCNTs.
    Type: Application
    Filed: August 4, 2015
    Publication date: August 17, 2017
    Inventors: Zhifeng REN, Dong CAI, Zhen YANG
  • Patent number: 9360509
    Abstract: A nanocoaxial sensor includes an outer conductor, an inner conductor, a nanoporous dielectric material disposed between the outer and inner conductors, a nanocavity sized to allow target species to enter the nanocavity between the outer and inner conductors.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: June 7, 2016
    Assignee: Trustees of Boston College
    Inventors: Michael J. Naughton, Dong Cai, Binod Rizal, Thomas Chiles, Huaizhou Zhao
  • Publication number: 20160146801
    Abstract: A bio-recognition system is described, where a bio-recognition nanosensor system uses an electropolymerization to produce protein imprints for biomarker recognition. Methods of making a bio-recognition sensor include forming a electropolymer coating on an electrode, binding a target biological structure to the coating to form an imprint, removing the biological structure from the coating, and forming a template that binds a specific biological structure.
    Type: Application
    Filed: August 4, 2015
    Publication date: May 26, 2016
    Inventors: Dong CAI, Zhifeng REN
  • Patent number: 9134305
    Abstract: An apparatus for detecting the presence of a target molecule is disclosed which includes a conductive nanostructure, a non-conductive polymer coating on at least a portion of the nanostructure, and a cavity formed in the polymer coating having a shape corresponding to the shape of the target molecule. A property of the nanostructure depends on the presence of the target molecule at the cavity.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: September 15, 2015
    Assignee: The Trustees of Boston College
    Inventors: Dong Cai, Thomas C. Chiles
  • Patent number: 9110055
    Abstract: A nanocoaxial sensor includes an outer conductor, an inner conductor, a dielectric material disposed between the outer and inner conductors, a nanocavity sized to allow target species to enter the nanocavity between the outer and inner conductors, and an active sensing element immobilized within the nanocavity on at least one of the inner or outer conductors. The active sensing element is adapted to selectively capture the at least one of the target species.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: August 18, 2015
    Assignee: The Trustees of Boston College
    Inventors: Dong Cai, Thomas Chiles, Krzysztof Kempa, Michael Naughton, Zhifeng Ren, Paudel Trilochan
  • Publication number: 20150031582
    Abstract: A method comprising (a) obtaining one or more biological samples from a subject wherein the subject has undergone an organ transplant; (b) determining the amount and type of one or more volatile organic compounds in the biological sample; and (c) correlating the amount of volatile organic compounds to a degree of transplant rejection. A device comprising a plurality of sensors configured to detect a plurality of volatile organic compounds in a biological sample of a subject having undergone an organ transplant.
    Type: Application
    Filed: July 28, 2014
    Publication date: January 29, 2015
    Applicant: UNIVERSITY OF HOUSTON SYSTEM
    Inventors: Dong Cai, Zhifeng Ren, Xian C. Li, Renard L. Thomas
  • Publication number: 20140015548
    Abstract: A nanocoaxial sensor includes an outer conductor, an inner conductor, a nanoporous dielectric material disposed between the outer and inner conductors, a nanocavity sized to allow target species to enter the nanocavity between the outer and inner conductors.
    Type: Application
    Filed: March 21, 2012
    Publication date: January 16, 2014
    Inventors: Michael J. Naughton, Dong Cai, Binod Rizal, Thomas Chiles, Huaizhou Zhao
  • Publication number: 20120118751
    Abstract: An apparatus for detecting the presence of a target molecule is disclosed which includes a conductive nanostructure, a non-conductive polymer coating on at least a portion of the nanostructure, and a cavity formed in the polymer coating having a shape corresponding to the shape of the target molecule. A property of the nanostructure depends on the presence of the target molecule at the cavity.
    Type: Application
    Filed: February 3, 2010
    Publication date: May 17, 2012
    Inventors: Dong Cai, Thomas C. Chiles
  • Publication number: 20110287977
    Abstract: A nanocoaxial sensor includes an outer conductor, an inner conductor, a dielectric material disposed between the outer and inner conductors, a nanocavity sized to allow target species to enter the nanocavity between the outer and inner conductors, and an active sensing element immobilized within the nanocavity on at least one of the inner or outer conductors. The active sensing element is adapted to selectively capture the at least one of the target species.
    Type: Application
    Filed: November 16, 2007
    Publication date: November 24, 2011
    Inventors: Dong Cai, Thomas Chiles, Krzysztof Kempa, Michael Naughton, Zhifeng Ren, Paudel Trilochan
  • Patent number: 7935517
    Abstract: A nanostructured molecular delivery vehicle comprising magnetic materials and configured to receive passenger biomolecules. The application of a an appropriate magnetic field having a gradient orients and drives the vehicle into a biological target, which may comprise cells, cell masses, tissue slices, tissues, etc. Under the control of the magnetic field, these vehicles can penetrate cell membranes. Then, the biomolecules carried by the vehicle can be released into the cells to perform their functions. Using this “nanospearing” technique, unprecendented high transfection efficiency has been achieved in several difficult-to-transfect cells. These include, but are not limited to, Bal 17 cells, ex vivo B cells, primary cultured cortical neurons, etc. This method advances the state of the art, providing an improved technique for the introduction of exogenous molecules to cells, with the clinical applications including, but not being limited to, drug delivery, gene therapy, vaccination, etc.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: May 3, 2011
    Assignee: NanoLab, Inc.
    Inventors: Dong Cai, David L. Carnahan