Patents by Inventor Lizhong Zhu

Lizhong Zhu 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: 20220145496
    Abstract: A process produces a thermoplastic polyurethane (TPU) fiber with low shrinkage, in particular at a high spinning speed. The resulting fiber can be used for fabric, especially for garments and shoes. The process combines the high-speed spinning process with the heat-setting process. This allows the process to produce a TPU fiber in high productivity, which could greatly decrease the cost. Moreover, the obtained TPU fiber has very low shrinkage of <10%, which makes it well suitable as the main raw material in fabrics.
    Type: Application
    Filed: February 11, 2020
    Publication date: May 12, 2022
    Applicants: BASF SE, Haining Xin Gao Fibres Ltd
    Inventors: De Hui YIN, Wei Zhuang, Hui Zhi YAN, Wei Lin Chen, Gendi Gan, Lizhong Zhu, Shengjie Zou
  • Publication number: 20210230344
    Abstract: The present invention relates to a thermoplastic polyurethane composition and use thereof. The thermoplastic polyurethane composition comprises a polyurethane prepared from a polyester polyol and a polyisocyanate as well as an antioxidant. The thermoplastic polyurethane composition of the present invention can be used with other thermoplastic polymers in melt spinning process to prepare bicomponent fibers.
    Type: Application
    Filed: May 6, 2019
    Publication date: July 29, 2021
    Inventors: Wing Cheung Chan, Yuk Ki Lee, Yao-chia Yang, Gendi Gan, Lizhong Zhu, Tongjian Zhang, Shengjie Zou
  • Patent number: 10623540
    Abstract: An electronic device may include a housing, processing circuitry carried by the housing, and at least one wireless transceiver carried by the housing and a NFC device carried by the housing. The electronic device may also include a display carried by the housing and having an internal surface within the housing and a display surface opposite the internal surface, and an NFC antenna mounted on and extending across at least a portion of the internal surface of the display, wherein the NFC antenna comprises a substrate and electrically conductive traces thereon defining a plurality of loops.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: April 14, 2020
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, Libo Zhu, Scott Leonard Dill, Raymond Michael Dikun, Pha Cong Nguyen, Soo Liam Ooi, Randy Alan Wiessner
  • Patent number: 10321376
    Abstract: In some examples, to mitigate interference of wireless communications, an electronic device that includes a first type wireless component and a second type wireless component receives values of parameters relating to wireless communication using the first type wireless component. The electronic device determines, using a model of a relationship between the parameters relating to wireless communication using the first type wireless component and at least one handover parameter relating to wireless communication using the second type wireless component, a value of the at least one handover parameter based on the received values of the parameters relating to wireless communication using the first type wireless component. It is determined whether the electronic device should be handed over from a first access point to a second access point based on the determined value of the at least one handover parameter.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: June 11, 2019
    Assignee: BlackBerry Limited
    Inventors: Khaled Lakhdhar, Lizhong Zhu, Cristian Lambiri
  • Patent number: 10225771
    Abstract: A method of controlling a wireless communication device to dynamically adapt and update roaming parameters stored in the device when operating in a wireless network. The method includes: determining a first roaming metric (M1) for a first wireless access point (AP) of the network when the device is in communication with the first AP; determining a second roaming metric (M2) for a second wireless AP of the network when the device has roamed to the second AP; and determining an adaptation value by subtracting M2 from M1. When the adaptation value is not zero, first roaming parameters associated with the first wireless AP are updated, based on the adaptation value and stored first roaming parameters associated with the first wireless AP and second roaming parameters associated with the second wireless AP are updated based on the adaptation value and stored second roaming parameters associated with the second wireless AP.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: March 5, 2019
    Assignee: BLACKBERRY LIMITED
    Inventors: Khaled Lakhdhar, Lizhong Zhu
  • Patent number: 10225745
    Abstract: Apparatus and method pertaining to the calculation of at least one value that represents, at least in part, wireless reception signal strength from the perspective of both a local wireless receiver and a remote receiver that receives wireless transmissions from a local wireless transmitter. By one approach the apparatus directly determines the wireless reception signal strength from the perspective of the local wireless receiver and indirectly determines the wireless reception signal strength from the perspective of the remote receiver.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: March 5, 2019
    Assignee: BlackBerry Limited
    Inventors: Michael Peter Montemurro, Khaled Lakhdhar, Stephen McCann, Lizhong Zhu
  • Patent number: 9992753
    Abstract: A system, method and device for adjusting a communication parameter for a network communicating with a communication device are provided. The method comprises: monitoring for a condition relating to a first network that has been in communication with the communication device; and determining whether an adjustment is to be implemented on a communication parameter of a second communication network that has been in communication with the communication device based on the condition and if so, implementing the adjustment to the communication parameter for the second communication network.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: June 5, 2018
    Assignee: BLACKBERRY LIMITED
    Inventors: Lizhong Zhu, Rudy Eugene Rawlins, Michael Peter Montemurro, Qingmai Zhou, Jun Xu, Fei He
  • Patent number: 9941910
    Abstract: A system that incorporates teachings of the subject disclosure may include, for example, a controller that determines a radiated throughput for at least one of an uplink throughput or a downlink throughput of the communication device, reduces transmit power for the communication device responsive to the radiated throughput satisfying a predetermined throughput range, and tunes a matching network of the communication device responsive to the radiated throughput not satisfying the predetermined throughput range. Other embodiments are disclosed.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: April 10, 2018
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, Joseph Caci, Keith R. Manssen
  • Publication number: 20180084470
    Abstract: In some examples, to mitigate interference of wireless communications, an electronic device that includes a first type wireless component and a second type wireless component receives values of parameters relating to wireless communication using the first type wireless component. The electronic device determines, using a model of a relationship between the parameters relating to wireless communication using the first type wireless component and at least one handover parameter relating to wireless communication using the second type wireless component, a value of the at least one handover parameter based on the received values of the parameters relating to wireless communication using the first type wireless component. It is determined whether the electronic device should be handed over from a first access point to a second access point based on the determined value of the at least one handover parameter.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 22, 2018
    Inventors: Khaled Lakhdhar, Lizhong Zhu, Cristian Lambiri
  • Publication number: 20170353868
    Abstract: Apparatus and method pertaining to the calculation of at least one value that represents, at least in part, wireless reception signal strength from the perspective of both a local wireless receiver and a remote receiver that receives wireless transmissions from a local wireless transmitter. By one approach the apparatus directly determines the wireless reception signal strength from the perspective of the local wireless receiver and indirectly determines the wireless reception signal strength from the perspective of the remote receiver.
    Type: Application
    Filed: June 20, 2017
    Publication date: December 7, 2017
    Inventors: Michael Peter MONTEMURRO, Khaled LAKHDHAR, Stephen McCANN, Lizhong ZHU
  • Patent number: 9806826
    Abstract: A mobile wireless communications device includes a housing and circuit board carried by the housing and includes radio frequency (RF) circuitry and a processor carried by the circuit board and operative with each other. A display connector for an LCD connector is mounted on the circuit board and adapted to be connected to a display. Display connection lines are carried by the circuit board and interconnect the display connector and processor for carrying signals from the processor to the display connector and a connected display. Filters are carried by the circuit board and connected to the display connection lines and reduce any interfering energy from the processor and display.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: October 31, 2017
    Assignee: BLACKBERRY LIMITED
    Inventors: Lizhong Zhu, Michael Stephen Corrigan, Perry Jarmuszewski, Liviu George, George Soliman Mankaruse, James Alexander Robinson, Marc A. Drader
  • Patent number: 9755676
    Abstract: A mobile wireless communications device may include a housing, a wireless receiver carried by the housing and configured to receive communication signals over a wireless frequency range, a wireline transmitter carried by the housing and configured to transmit communication signals overlapping in frequency with the wireless frequency range, and a controller carried by the housing and coupled with the wireless receiver and the wireline transmitter. The controller may be configured to determine when the wireless receiver is to begin receiving and, based thereon, switch the wireline transmitter to a suspended communication mode during which transmission is disabled. The controller may also be configured to determine when the wireless receiver has completed receiving and, based thereon, switch the wireline transmitter to a normal communication mode in which transmission is enabled.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: September 5, 2017
    Assignee: BLACKBERRY LIMITED
    Inventors: Brynn King, Lizhong Zhu, Mingchang Wang, Michael Stephen Corrigan, Chengzhi Wang
  • Patent number: 9749878
    Abstract: A system, method and device for adjusting communication parameters for networks communicating with a communication device are provided. The method comprises: when the communication device is linked to a first communication network and a second communication network, comparing a strength of received signals from the second network against a threshold; and when the strength of the received signals is less than the threshold, adjusting a network parameter of signals received from the second communication network by the communication device.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: August 29, 2017
    Assignee: BLACKBERRY LIMITED
    Inventors: Lizhong Zhu, Fei He, Yan Wu, Qingmai Zhou, Jun Xu, Michael Peter Montemurro, Zongyou Zhang
  • Patent number: 9686690
    Abstract: Apparatus and method pertaining to the calculation of at least one value that represents, at least in part, wireless reception signal strength from the perspective of both a local wireless receiver and a remote receiver that receives wireless transmissions from a local wireless transmitter. By one approach the apparatus directly determines the wireless reception signal strength from the perspective of the local wireless receiver and indirectly determines the wireless reception signal strength from the perspective of the remote receiver.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: June 20, 2017
    Assignee: BlackBerry Limited
    Inventors: Michael Peter Montemurro, Khaled Lakhdhar, Stephen McCann, Lizhong Zhu
  • Patent number: 9685982
    Abstract: A mobile wireless communications device includes a housing an antenna, and radio frequency (RF) circuitry. A transceiver is connected to the antenna and a processor is operative with the RF circuitry. The transceiver includes an In-phase and Quadrature (I/Q) Modulation and Power Amplification circuit having an In-phase (I) circuit with a modulator mixer and power amplifier circuit. A Quadrature (Q) circuit includes a modulator mixer and power amplifier circuit. A power combiner receives the separately amplified In-phase and Quadrature signals and sums and outputs the signals as a combined I and Q signal. The I and Q circuits are isolated from the combined I and Q signal to enhance antenna matching and transmitted radiated power (TRP) and reduce harmonic emission from the power amplification circuits.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: June 20, 2017
    Assignee: BLACKBERRY LIMITED
    Inventors: Lizhong Zhu, George Mankaruse, Michael Corrigan, Perry Jarmuszewski
  • Publication number: 20170163314
    Abstract: An electronic device may include a housing, processing circuitry carried by the housing, and at least one wireless transceiver carried by the housing and a NFC device carried by the housing. The electronic device may also include a display carried by the housing and having an internal surface within the housing and a display surface opposite the internal surface, and an NFC antenna mounted on and extending across at least a portion of the internal surface of the display, wherein the NFC antenna comprises a substrate and electrically conductive traces thereon defining a plurality of loops.
    Type: Application
    Filed: February 15, 2017
    Publication date: June 8, 2017
    Inventors: Lizhong Zhu, Libo Zhu, Scott Leonard Dill, Raymond Michael Dikun, Pha Cong Nguyen, Soo Liam Ooi, Randy Alan Wiessner
  • Patent number: 9622057
    Abstract: A mobile communication device and method for forwarding a new voice call, received at the device during a current voice call, to a paired computing device is provided. The method includes, at the device comprising a processor, a display device, a memory and a communication interface, receive a new voice call while a current voice call is active at the device and display, on the display device, a selectable option for forwarding the new voice call. Upon detecting selection of the selectable option: retrieve, from the memory one or more stored device identifiers, each stored device identifier associated with a paired computing device, display, on the display device, the one or more stored device identifiers and upon detecting selection of a device identifier of the one or more stored device identifiers, forward the new voice call, using the communication interface, to the paired computing device associated with the device identifier.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: April 11, 2017
    Assignee: BLACKBERRY LIMITED
    Inventors: Kai Qu, Jun Xu, Lizhong Zhu, Libo Zhu
  • Patent number: 9609096
    Abstract: An electronic device may include a housing having a display opening therein, processing circuitry within the housing, and wireless transceiver circuitry within the housing and coupled to the processing circuitry. The electronic device may also include NFC transceiver circuitry within the housing and coupled to the processing circuitry, a display within the housing and coupled to the processing circuitry, the display having an external surface exposed through the display opening and having an internal surface within the housing, and an NFC antenna positioned within the housing behind and aligned with the internal surface of the display and coupled to the NFC transceiver circuitry.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: March 28, 2017
    Assignee: BLACKBERRY LIMITED
    Inventors: Lizhong Zhu, Libo Zhu, Scott Leonard Dill, Raymond Michael Dikun, Pha Cong Nguyen, Soo Liam Ooi, Randy Alan Wiessner
  • Patent number: 9538436
    Abstract: An electronic device monitors a quality of a wireless connection between the electronic device and a first access point. Based on the monitoring and a collection of parameters relating to controlling handover between access points, a determination is made regarding whether the electronic device should be handed over to a second access point from the first access point, where the parameters differ for different combinations of the first access point and candidate destination access points for handover of the electronic device from the first access point.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: January 3, 2017
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, Khaled Lakhdhar, Michael Peter Montemurro, Fei He, Qingmai Zhou, Jun Xu, Dong Wang, Zongyou Zhang, Mohammed Mahdi Hasan, Libo Zhu, Cristian Lambiri, Goran Hageltorn, Yan Wu, Daniel Fischer
  • Publication number: 20160322994
    Abstract: A mobile wireless communications device may include a housing, a wireless receiver carried by the housing and configured to receive communication signals over a wireless frequency range, a wireline transmitter carried by the housing and configured to transmit communication signals overlapping in frequency with the wireless frequency range, and a controller carried by the housing and coupled with the wireless receiver and the wireline transmitter. The controller may be configured to determine when the wireless receiver is to begin receiving and, based thereon, switch the wireline transmitter to a suspended communication mode during which transmission is disabled. The controller may also be configured to determine when the wireless receiver has completed receiving and, based thereon, switch the wireline transmitter to a normal communication mode in which transmission is enabled.
    Type: Application
    Filed: July 13, 2016
    Publication date: November 3, 2016
    Inventors: BRYNN KING, LIZHONG ZHU, MINGCHANG WANG, MICHAEL STEPHEN CORRIGAN, CHENGZHI WANG