Patents by Inventor Xiaowei Zhang

Xiaowei 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).

  • Impact-Modified Biodegradable Polymer Compositions
    Publication number: 20210171740
    Abstract: A polymer composition containing cellulose acetate in combination with one or more impact modifiers is described. The polymer composition can also contain a plasticizer and a bio-based polymer in addition to the cellulose acetate. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 10, 2021
    Inventors: Christopher McGrady, Rongfu Li, Michael Combs, Xiaowei Zhang, Suresh Subramonian
  • Cellulose Ester Composition Containing Bloom Resistant or Bio-Based Plasticizer
    Publication number: 20210171742
    Abstract: A polymer composition containing cellulose acetate in combination with one or more bloom resistant or bio-based plasticizers and optionally one or more bio-based polymers is described. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 10, 2021
    Inventors: Christopher McGrady, Rongfu Li, Michael Combs, Xiaowei Zhang, Suresh Subramonian
  • Apparatus, system and method for security management
    Patent number: 11032747
    Abstract: There is provided a network system including one or more first MMEs (30), and a second MME (40) separated from the first MMEs (30). In one of operation cases, the first MME (30) pushes, to the second MME (40), security context for a UE (10) that attaches to the first MME (30). The second MME (40) stores the security context. The first MME (30) further pushes the latest security context to the second MME (40), during a switch-off procedure for the first MME (30). The second MME (40) updates the stored security context with the latest security context. The first MME (30) pulls the security context from the second MME (40), when the UE (10) re-attaches to the first MME (30) or is handovered from different one of the first MMEs (30).
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: June 8, 2021
    Assignee: NEC CORPORATION
    Inventors: Xiaowei Zhang, Anand Raghawa Prasad
  • Apparatus, system and method for security management
    Patent number: 10986544
    Abstract: There is provided a network system including one or more first MMEs (30), and a second MME (40) separated from the first MMEs (30). In one of operation cases, the first MME (30) pushes, to the second MME (40), security context for a UE (10) that attaches to the first MME (30). The second MME (40) stores the security context. The first MME (30) further pushes the latest security context to the second MME (40), during a switch-off procedure for the first MME (30). The second MME (40) updates the stored security context with the latest security context. The first MME (30) pulls the security context from the second MME (40), when the UE (10) re-attaches to the first MME (30) or is handovered from different one of the first MMEs (30).
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 20, 2021
    Assignee: NEC Corporation
    Inventors: Xiaowei Zhang, Anand Raghawa Prasad
  • Authentication and authorization in proximity based service communication
    Patent number: 10979408
    Abstract: A method of performing authentication and authorization in Proximity based Service (ProSe) communication by a requesting device which sends a request of a communication and a receiving device which receives the request from the requesting device, the method including deriving session keys Kpc and Kpi from an unique key Kp at the requesting and receiving devices, using the session keys Kpc and Kpi for ProSe communication setup and direct communication between the requesting and receiving devices, starting the direct communication with the requesting and receiving devices. The key Kpc is confidentiality key and the key Kpi is integrity protection key.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: April 13, 2021
    Assignee: NEC Corporation
    Inventors: Xiaowei Zhang, Anand Raghawa Prasad
  • Applied magnetic field synthesis and processing of iron nitride magnetic materials
    Patent number: 10961615
    Abstract: A method may include annealing a material including iron and nitrogen in the presence of an applied magnetic field to form at least one Fe16N2 phase domain. The applied magnetic field may have a strength of at least about 0.2 Tesla (T).
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 30, 2021
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Michael P. Brady, Orlando Rios, Yanfeng Jiang, Gerard M. Ludtka, Craig A. Bridges, Jian-Ping Wang, Xiaowei Zhang, Lawrence F. Allard, Edgar Lara-Curzio
  • RF Filter for Use at 5G Frequencies
    Publication number: 20210091818
    Abstract: An RF filter comprising a resonator element and a polymer composition is provided. The polymer composition contains an aromatic polymer and has a melting temperature of about 240° C. or more. The polymer composition exhibits a dielectric constant of about 5 or less and dissipation factor of about 0.05 or less at a frequency of 10 GHz.
    Type: Application
    Filed: August 18, 2020
    Publication date: March 25, 2021
    Inventors: Xiaowei Zhang, Xinyu Zhao, Christopher McGrady
  • Novel Hydrogel
    Publication number: 20210085708
    Abstract: The present disclosure relates to a novel hydrogel, and to method of making and using the novel hydrogel. The novel hydrogel is a reaction product of a water soluble laccase cross-linked arabinoxylan and an acid, and has a pH value of 1.5-2.5.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 25, 2021
    Applicant: Purdue Research Foundation
    Inventors: Bruce R Hamaker, Xiaowei Zhang
  • Circuit Board for Use at 5G Frequencies
    Publication number: 20210092836
    Abstract: A laminate for use in a circuit board is provided. The laminate comprises a conductive layer and a film positioned adjacent to the conductive layer. The film comprises a polymer composition that includes a liquid crystalline polymer and a hydrophobic material. The polymer composition exhibits a dielectric constant of about 5 or less and dissipation factor of about 0.05 or less at a frequency of 10 GHz.
    Type: Application
    Filed: August 18, 2020
    Publication date: March 25, 2021
    Inventors: Xiaowei Zhang, Xinyu Zhao, Christopher McGrady
  • SYSTEM AND METHOD FOR ASSESSING TRANSPORTATION RISK
    Publication number: 20210072071
    Abstract: A method for assessing transportation risk is adapted to an object transported by a vehicle. The method comprises disposing a sensor on a floor of the vehicle to generate and collect a vibration signal, with the floor being configured to carry the object, a computing device performs a time-domain processing procedure according to the vibration signal to output a first data, performs a frequency-domain processing procedure according to the first data to output a second data, performs a risk assessing procedure to output a risk level according to the second data and a reference data, wherein the second data comprises an actual vibration intensity and an actual vibration duration and the reference data comprises a reference vibration intensity and a reference vibration duration.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 11, 2021
    Applicants: INVENTEC (PUDONG) TECHNOLOGY CORPORATION, INVENTEC CORPORATION
    Inventors: De bin QI, Xiaowei ZHANG, Xuefeng CHEN
  • 5G System Containing A Polymer Composition
    Publication number: 20210075093
    Abstract: A 5G system comprising at least one antenna element configured to transmit and receive 5G radio frequency signals and at least one electronic component is provided. The antenna element, the electronic component, or both, comprise a polymer composition that includes a liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of about 10 mol. % or more. Further, the polymer composition exhibits a dielectric constant of about 5 or less and dissipation factor of about 0.05 or less at a frequency of 10 GHz.
    Type: Application
    Filed: August 18, 2020
    Publication date: March 11, 2021
    Inventors: Xiaowei Zhang, Xinyu Zhao, Young Shin Kim, Hendrich A. Chiong, Christopher McGrady
  • Polymer Composition and Film for Use in 5G Applications
    Publication number: 20210070927
    Abstract: A polymer composition comprising a liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of about 50 mol. % or more is provided. The polymer composition exhibits a dielectric constant of about 4 or less and a dissipation factor of about 0.05 or less at a frequency of 10 GHz.
    Type: Application
    Filed: August 18, 2020
    Publication date: March 11, 2021
    Inventors: Xiaowei Zhang, Young Shin Kim
  • UPDATE OF SECURITY FOR GROUP BASED FEATURE IN M2M
    Publication number: 20210076168
    Abstract: A network node (21), which is placed within a core network, receives a message from a transmission source (30) placed outside the core network. The message includes an indicator indicating whether or not the message is addressed to a group of one or more MTC devices attached to the core network. The network node (21) determines to authorize the transmission source (30), when the indicator indicates that the message is addressed to the group. Further, the message includes an ID for identifying whether or not the message is addressed to the group. The MTC device determines to discard the message, when the ID does not coincide with an ID allocated for the MTC device itself. Furthermore, the MTC device communicates with the transmission source (30) by use of a pair of group keys shared therewith.
    Type: Application
    Filed: November 23, 2020
    Publication date: March 11, 2021
    Applicant: NEC Corporation
    Inventors: Xiaowei ZHANG, Anand Raghawa PRASAD
  • Polymer Composition For Laser Direct Structuring
    Publication number: 20210070929
    Abstract: A laser activatable polymer composition is provided. The composition contains at least one laser activatable additive and at least one high naphthenic thermotropic liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of about 10 mol. % or more. The polymer composition exhibits a dielectric constant of about 5 or less as determined at a frequency of 2 GHz.
    Type: Application
    Filed: August 18, 2020
    Publication date: March 11, 2021
    Inventors: Young Shin Kim, Xiaowei Zhang
  • CONVEYING ROLLER, WINDER AND METHOD FOR CONVEYING CELL POLE PIECE
    Publication number: 20210043980
    Abstract: The present disclosure relates to a conveying roller for conveying a cell pole piece, the cell pole piece comprising a main body and pole tabs, the main body comprising a bearing area and a transition area, each of the pole tabs comprising a root portion connected to the transition area, a middle section and a top portion, and the conveying roller comprising: a central axis, a first end face and a second end face disposed opposite to each other along the central axis, a transmission portion and an avoidance position provided between the first end face and the second end face, wherein the transmission portion is rotatable around the central axis, the bearing area is contactable with the transmission portion, so that the transmission portion applies a transmission friction force to the cell pole piece, and the avoidance position is capable of avoiding the transition area and the pole tabs.
    Type: Application
    Filed: October 12, 2019
    Publication date: February 11, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Yiruo WANG, Xiaowei ZHANG, Hongwen CHANG, Xiao WANG, Peichao WANG, Xi CHEN
  • SECURITY MANAGEMENT ACCORDING TO LOCATION CHANGE IN PROXIMITY BASED SERVICES
    Publication number: 20210039497
    Abstract: A network server in a mobile communication system including a group of UEs (User Equipments) includes at least one processor, and at least one memory coupled to the at least one processor, the at least one memory storing instructions that when executed by the at least one processor cause the at least one processor to obtain a group identifier of the group of UEs and UE identifiers of the UEs based on first information from the group of UEs, detect that at least one UE of the group of UEs leaves the group of UEs based on the first information to update the group of UEs, and send, to the at least one UE of the group of UEs that left the group of UEs, a message including the group identifier and second information related to the leaving of the at least one UE of the group of UEs.
    Type: Application
    Filed: October 27, 2020
    Publication date: February 11, 2021
    Inventors: Xiaowei Zhang, Anand Raghawa Prasad
  • Conductive plate used as near field communication antenna and terminal
    Patent number: 10916834
    Abstract: A terminal includes a printed circuit board, a conductive plate, a near field communication antenna matching circuit and a near field communication chip, where a slot is disposed in the conductive plate, the conductive plate is provided with an opening at an end of the slot, a through-hole is disposed in the conductive plate, the through-hole communicates with the slot, a first electrical contact and a second electrical contact are disposed on two sides of the slot, respectively. The first electrical contact and the second electrical contact are disposed between the end of the slot and the through-hole, at least one of the first electrical contact or the second electrical contact is coupled to the near field communication antenna matching circuit, and a current corresponding to the near field communication frequency is formed at a periphery of the slot and at a periphery of the through-hole.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: February 9, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Shuwen Lyu, Yuehui Ouyang, Xiaowei Zhang, Bo Huang, Wei Zhu
  • APPARATUS, SYSTEM AND METHOD FOR MOBILE COMMUNICATION
    Publication number: 20210029523
    Abstract: In order for making MTC more efficient and/or secure, a base station forming a communication system connects a UE to a core network. A node serves as an entering point to the core network for a service provider, and transmits traffic between the service provider and the UE. The node establishes, as a connection to the base station, a first connection for directly transceiving messages between the node and the base station. Alternatively, the node establishes a second connection for transparently transceiving the messages through a different node that is placed within the core network and has established a different secure connection to the base station.
    Type: Application
    Filed: October 9, 2020
    Publication date: January 28, 2021
    Applicant: NEC Corporation
    Inventors: Xiaowei ZHANG, Anand Raghawa PRASAD, Andreas KUNZ, Genadi VELEV, Toshiyuki TAMURA
  • Apparatus, system and method for dual connectivity
    Patent number: 10856197
    Abstract: An SeNB informs an MeNB that it can configure bearers for the given UE. At this time, the MeNB manages the DRB status, and then sends a key S-KeNB to the SeNB. The MeNB also sends a KSI for the S-KeNB to both of the UE and the SeNB. After this procedure, the MeNB informs an EPC (MME and S-GW) about the new bearer configured at the SeNB, such that the S-GW 50 can start offloading the bearer(s) to the SeNB 30. Prior to the offloading, the EPC network entity (MME or S-GW) performs verification that: 1) whether the request is coming from authenticated source (MeNB); and 2) whether the SeNB is a valid eNB to which the traffic can be offload.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: December 1, 2020
    Assignee: NEC CORPORATION
    Inventors: Xiaowei Zhang, Anand Raghawa Prasad
  • APPARATUS, SYSTEM AND METHOD FOR MTC
    Publication number: 20200374361
    Abstract: In order for efficiently managing communications between a UE (10) and multiple SCSs (20_1-20_n), the UE (10) includes, in one message, multiple pieces of data to be transmitted to the SCSs (20_1-20_n), and sends the message to an MTC-IWF (30). The MTC-IWF (30) receives the message from the UE (10), and distributes the date to the SCSs (20_1-20_n). Each of the SCSs sends (20_1-20_n), to the MTC-IWF (30), data to be transmitted to the UE (10) and an indicator that indicates for the SCSs (20_1-20 n) the time tolerance until the data is transmitted to the UE (10). The MTC-IWF (30) receives the data and the indicators from the SCSs (20_1-20_n), and determines when to forward the data to the UE (10) based on the indicators.
    Type: Application
    Filed: August 11, 2020
    Publication date: November 26, 2020
    Applicant: NEC Corporation
    Inventors: Xiaowei ZHANG, Anand Raghawa PRASAD